Product engineer jobs in LondonCreate job alerts

Would you like to help implement innovative cloud computing solutions and solve the most complex technical problems? Are you excited by the prospect of building and running the world's largest cloud computing infrastructure to provide a better world for future generations? Amazon Web Services (AWS) builds and operates some of the largest internet infrastructure on the planet; providing companies of all sizes with an infrastructure web services platform in the cloud. With AWS, customers provision compute power, storage, database, and other cloud resources as their business demands them. To meet the growing demand for AWS Services around the globe, we need exceptionally motivated people who are driven by learning and innovation. If you join us, you’ll be part of a world-class team in a dynamic environment that has the entrepreneurial feel of a start-up. This is an opportunity to operate and engineer systems on a massive scale, and to gain world class experience in cloud computing. You'll be surrounded by people who are passionate about cloud computing, believe that first class service is critical to customer success, and are committed to improvement. AWS Utility Computing (UC) provides product innovations — from foundational services such as Amazon’s Simple Storage Service (S3) and Amazon Elastic Compute Cloud (EC2), to consistently released new product innovations that continue to set AWS’s services and features apart in the industry. As a member of the UC organization, you’ll support the development and management of Compute, Database, Storage, Internet of Things (Iot), Platform, and Productivity Apps services in AWS, including support for customers who require specialized security solutions for their cloud services. Top reasons to join our team: • Be a catalyst to deliver a truly disruptive products that are growing rapidly, • Define, build, own, and run a service in high growth environment, • Solve unique and first-order problems at massive-scale across many AWS Services, • Learn how to build and operate distributed systems at massive scale, • Build and influence the tools and utilities that are part of the AWS fleet running our internal services Key job responsibilities WHAT DOES A SYSTEMS ENGINEER DO AT AMAZON? Amazon has a collaborative, purposeful and enthusiastic environment where we “Work Hard, Have Fun, Make History.” On a typical day engineers might dive deep into understanding the root cause of a customer issue, investigate why a metric is trending the wrong way and consult with senior engineers at Amazon. We own our services and believe in making out-of-hours support as painless as possible. To achieve this, we implement Operational Excellence best practices and strive to automate manual processes. Our Systems Engineering roles help engineers develop a broad range of skills. They utilise their Linux skills to troubleshoot, innovate fixes and workarounds, keep software up-to-date and provide data and metrics that help manage the capacity and efficiency of our services. They draw on their networking knowledge to identity and troubleshoot network connectivity issues. They communicate clearly and collaborate with others to deliver results. They are self-starters, comfortable dealing with ambiguity and change. They are customer-obsessed, always looking to understand customer pain points and find resolutions quickly and completely. You will need to be a UK national and able to obtain and maintain a UK Government Security Clearance. Further details found here: About the team About AWS Diverse Experiences: AWS values diverse experiences. Even if you do not meet all of the preferred qualifications and skills listed in the job description, we encourage candidates to apply. If your career is just starting, hasn’t followed a traditional path, or includes alternative experiences, don’t let it stop you from applying. Why AWS? Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never stopped innovating — that’s why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses. Inclusive Team Culture: AWS values curiosity and connection. Our employee-led and company-sponsored affinity groups promote inclusion and empower our people to take pride in what makes us unique. Our inclusion events foster stronger, more collaborative teams. Our continual innovation is fueled by the bold ideas, fresh perspectives, and passionate voices our teams bring to everything we do. Mentorship & Career Growth: We’re continuously raising our performance bar as we strive to become Earth’s Best Employer. That’s why you’ll find endless knowledge-sharing, mentorship and other career-advancing resources here to help you develop into a better-rounded professional. Work/Life Balance: We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why we strive for flexibility as part of our working culture. When we feel supported in the workplace and at home, there’s nothing we can’t achieve. • Working knowledge of Linux system administration and good troubleshooting skills at all levels, from application to network to host, • Experience of systems automation using BASH, Python, Perl, etc, • Experience of network fundamentals (DNS, DHCP, TCP/IP, routing, switching, HTTP), • Exposure to cloud computing concepts and design considerations, • Knowledge of configuration management systems, such as: Puppet, Chef, Ansible, or related systems Amazon is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We value your passion to discover, invent, simplify and build. Protecting your privacy and the security of your data is a longstanding top priority for Amazon. Please consult our Privacy Notice (___) to know more about how we collect, use and transfer the personal data of our candidates. Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status. Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit ___ for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

Job Title: Principal Engineer – Safety Location: Frimley, Weymouth, Bristol, Portsmouth, or Plymouth dependent on role and your personal circumstances. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role. Salary: Circa £60,000 depending on experience What you’ll be doing: • Providing advice on product safety matters to project and engineering managers delivering the programmes and ensuring the safety considerations are correctly considered and implemented, • Engaging with third parties, to review and gather supporting Design Safety Justification (DSJ) report evidence, • Developing safety arguments, both physical and functional, using appropriate safety analyses methods, producing, and updating DSJ’s and safety management documentation using appropriate regulations and standards Essential: • Degree level qualification (or equivalent experience) in relevant STEM subject (Engineering/ Physics/ Maths/ Science), • Broad knowledge of industry safety standards (such as Def Stan 00-055 and 00-056, IEC 61508 or similar) You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive. The Safety & Environmental team: You will have the opportunity to work within a team of engineers and technical specialists to help us design, develop, integrate, manage, and support complex systems and combat sub-systems for in service and future submarines. We offer relocation support packages across all Submarine roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks. Closing Date: 16th January 2026 We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible. #LI-CB1 #LI-hybrid

Senior Mapping Engineer (Large-Scale HD Mapping) — First Key Hire Circa £80k+, London based Want to work for an advanced start up building real-world autonomous systems? We’re looking for a highly skilled Senior Mapping Engineer to become the first dedicated mapping lead. This is a high-ownership role where you’ll take charge of the high-accuracy, large-scale mapping capability, set the technical roadmap, and grow and mentor a mapping team as deployments scale. You’ll maintain and evolve an existing mapping codebase, enhancing accuracy, stability, and scalability across challenging industrial and autonomous environments. Working closely with perception, localization, and navigation, you’ll ensure themaps are drift-free, up-to-date, and deeply integrated into the autonomy stack—from raw sensor data to validated, deployed map products. What you’ll do • Own and advance scalable LiDAR- and vision-based mapping pipelines., • Build and improve 2D/3D representations: occupancy grids, vector/HD maps, semantic layers, environment models., • Lead multi-sensor fusion (LiDAR, cameras, radar, GNSS/INS, odometry) into coherent, consistent map outputs., • Deliver large-scale capabilities like multi-session mapping, fleet workflows, map versioning, delta updates, and distributed map generation., • Maintain tight integration with SLAM/Localization to ensure stable, drift-free deployment performance., • Define KPIs and validation frameworks for map accuracy, completeness, and consistency., • Translate state-of-the-art research (SLAM, semantic mapping, multi-modal reconstruction) into production systems., • Set best practices and technical standards to support future team growth. Experience required • MSc/PhD in Robotics, Computer Vision, Computer Science, or related field., • 4–5+ years hands-on mapping experience in autonomous systems or robotics., • Deep expertise in LiDAR/point-cloud processing (PCL, Open3D, custom pipelines)., • Strong background in vision-based mapping / visual SLAM and multi-sensor fusion., • Proficiency in C++ with strong experience in ROS2., • Solid grounding in estimation, optimization, geometry, kinematics, and TF2. Why join You’ll own a mission-critical autonomy capability, shape the map product and technical direction, work on live deployments, and step into a clear path to build and lead your own mapping team.

Job Description At Aristocrat, we believe in bringing happiness to life through the power of play, and we're seeking a Senior React Native Engineer to join our dynamic and innovative team. Our company is committed to delivering outstanding gaming experiences and advancing responsible gameplay. This role offers an outstanding chance to contribute to world-class gaming content and technology. You will play a vital role in crafting the future of our mobile gaming experiences. What You'll Do • Lead the technical development of a React Native–based SDK and companion application, coordinating the design, implementation, quality, performance, and long-term maintainability throughout the product lifecycle., • Serve as a technical subject-matter expert and project leader, providing mentorship on architecture, standard methodologies, complex problem solving, and cross-platform mobile development., • Architect and evolve the React Native SDK to support scalability, extensibility, and high performance, setting standards for API build, integration patterns, and developer experience., • Create reusable, high-quality React Native components and native bridges (iOS and Android) that adhere to strict performance, reliability, and security standards., • Collaborate with product, build, QA, platform, and native engineering teams to define technical requirements and deliver cohesive end-to-end solutions., • Establish engineering guidelines, coding standards, and architectural patterns, ensuring consistency and long-term maintainability across the codebase., • Identify and resolve systemic performance issues, bringing to bear deep technical expertise to improve reliability, scalability, and mobile runtime efficiency across platforms., • Drive documentation quality at scale, defining standards and ensuring the SDK, architecture, and complex integrations are well understood across teams., • Mentor and support less experienced engineers, sharing knowledge, strengthening mobile expertise within the team, and helping elevate engineering efficiency., • Advise collaborators on technical trade-offs, risks, and opportunities, communicating clearly across technical and non-technical audiences.What We Are Seeking, • Bachelor’s degree in computer science, engineering, or a related field., • More than 8 years of experience in software development., • 5+ years of experience crafting and launching mobile apps using React Native, primarily for iOS and Android., • Strong knowledge of architecture and implementation of native Android or/and iOS apps, with experience in the full mobile development life cycle., • Profound expertise in JavaScript, TypeScript, and related frameworks and libraries., • Familiarity with Git for version control and experience working in agile development environments., • Adept problem solver with a history of delivering quality code and solutions., • Strong communication and persuasion skills, with the ability to advise peers and collaborators on complex technical topics, risks, and trade-offs. Why Aristocrat? Aristocrat is a world leader in gaming content and technology, and a top-tier publisher of free-to-play mobile games. We deliver great performance for our B2B customers and bring joy to the lives of the millions of people who love to play our casino and mobile games. And while we focus on fun, we never forget our responsibilities. We strive to lead the way in responsible gameplay, and to lift the bar in company governance, employee wellbeing and sustainability. We’re a diverse business united by shared values and an inspiring mission to bring joy to life through the power of play. We aim to create an environment where individual differences are valued, and all employees have the opportunity to realize their potential. We welcome and encourage applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity. EEO M/F/D/V * World Leader in Gaming Entertainment * Robust benefits package * Global career opportunities Our Values * All about the Player * Talent Unleashed * Collective Brilliance * Good Business Good Citizen Travel Expectations None Additional Information At this time, we are unable to sponsor work visas for this position. Candidates must be authorized to work in the job posting location for this position on a full-time basis without the need for current or future visa sponsorship.

Lead Engineer – Climate Reporting SaaS Platform - Remote UK. We are working with a small, mission-driven SaaS startup that is building a digital platform to support climate change reporting at scale. Lead the technical direction of a growing SaaS product with genuine social impact.

This is a chance for a Senior Software Engineer to join a small, but ambitious tech-for-good / IoT startup based in the London City Centre thats building product. AWS / React London (Hybrid, 3 days onsite). Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy an

As the Lead Frontend Engineer you will lead and manage 3 frontend engineers whilst setting coding standards. Lead Frontend Engineer - London - Up to £120k. As en engineer you hold a product mindset with a strong eye for detail in design.

Location: 🌍Belfast, London or Barcelona Salary and Compensation: 💷 £60,000 - £110,000 + 📈 Stock Options Benefits: 🏥 Full Medical Insurance + 💻 All Equipment Covered About Eolas Accessing medical knowledge rapidly and easily at the point of care is still very difficult for healthcare professionals. Eolas Medical is transforming how critical medical knowledge is accessed at the point of care. We have a vision where every healthcare professional can instantly access the context specific knowledge they need to deliver safe, effective care. Designed and developed by doctors, the platform aggregates and indexes tens of thousands of items of medical content, enabling rapid and accurate decision-making. It’s currently being used by hundreds of thousands of healthcare professionals globally, over 85% of acute NHS hospitals, 40% of all doctors in Ireland and also used in world leading institutions in the US including Stanford Healthcare, Mass General and Boston Children’s Hospital. We’re now hiring another Clinical Engineer to work alongside a team of doctors helping build the next generation of AI powered clinical knowledge tools. This position has a broad scope, accepting applications from all levels of experience, i.e from minimal software development experience to the world’s best clinician turned engineer. The Role - Clinician Engineer (Clinical + Full Stack Engineering) This is a rare hybrid role for doctors who are passionate about technology, problem-solving, and building real tools that dramatically improve clinical workflows. You will bring your clinical understanding into every product decision, while learning (or expanding) real engineering capability. You will help design, build, and ship features used directly by frontline clinicians including our next-generation AI-powered knowledge retrieval tools. We welcome a broad spectrum of experience: At one end: Doctors with strong clinical background and early-stage engineering skills who are eager to learn. You’ll receive close mentorship, structured training, and opportunities to contribute quickly. At the other: Highly experienced clinician-engineers capable of contributing as senior full-stack or backend engineers from day one. You’ll directly shape system architecture, product direction, and clinical tooling design. Your clinical intuition will be just as valuable as your engineering output. This is a role where both skillsets matter equally. Our Tech Stack We are a cloud-native, modern, TypeScript-first platform. Experience with any of the following is a bonus, you do not need all of them. Backend & Infrastructure • AWS (Lambda, API Gateway, Cognito, S3, OpenSearch), • Node.js / TypeScript, • Python, • PostgreSQL & DynamoDB, • Serverless architecture & microservices, • Docker, CI/CD pipelines, • Cloud security & compliance (HIPAA / GDPR / NHS DTAC) Frontend • React, • TypeScript, • Tailwind, • Component-driven development AI / RAG / Knowledge Pipelines • LLM-powered features, • RAG pipelines (embedding models, chunking strategies, semantic search), • Document extraction/processing (PDF parsing, OCR, agentic pipelines), • Clinical content ingestion workflows, • Evaluation frameworks for safe medical AI responses If you don’t know these yet, that’s fine. We will teach you. What You’ll Do Depending on your experience, you will contribute to some or all of the following: Product & Clinical Problem Solving • Translate real clinical workflows into intuitive product experiences., • Help design features that clinicians will actually use under pressure., • Work closely with doctors, engineers, and leadership to shape product direction. Full-Stack or Backend Engineering • Build and ship cloud-first features using TypeScript/Node.js, React/Next.js, and AWS., • Contribute to infrastructure-as-code and deploy serverless services., • Help architect systems that scale to hundreds of thousands of clinicians. AI & Clinical Knowledge Retrieval • Build RAG workflows that safely surface medical knowledge., • Develop clinical document ingestion pipelines that process PDFs, protocols, and policies., • Validate AI-generated outputs with clinical context and domain expertise. Quality, Safety & Clinical Integrity • Ensure that what we build is clinically safe, defensible, and high-impact., • Bring frontline intuition to technical decisions that will affect patient care. Learning & Growth • For early-stage engineers: Receive structured training in software engineering, cloud systems, and AI tooling. Pair program with senior engineers, complete real projects, and grow rapidly., • For experienced engineers: Lead projects, contribute to architecture, mentor others, and shape the technical roadmap. Who We’re Looking For You should be a doctor with a passion for technology. Beyond that, you might be early in your engineering journey or already an expert. Either way: Essentials • Strong clinical background with deep understanding of real-world workflows., • A product mindset: you obsess over usability and solving real clinician problems., • Genuine passion for technology, engineering, and learning new skills., • Ability to think pragmatically and deliver high-quality, reliable solutions., • Curiosity, humility, and a desire to build the future of clinical decision support. Nice to Have • Experience coding in TypeScript, JavaScript, Python, or similar., • Understanding of cloud systems (AWS preferred)., • Familiarity with LLMs, embeddings, or semantic search., • A portfolio of side projects, tools, or apps you’ve built (clinical or not)., • Experience in a startup or fast-moving environment. For Senior-Level Candidates • 3–7+ years engineering experience (before or after your clinical career)., • Ability to independently architect and build production systems or if frontend orientated have the ability to lead front end development using React., • Experience with serverless systems, distributed architectures, or AI pipelines., • Leadership experience or mentoring junior engineer-clinicians. Why Join Eolas Medical This is not a normal job. • You will help shape how AI is safely used in frontline healthcare - globally., • You will work with a small, mission-driven group of clinician-engineers., • You will join at a pivotal moment as we scale from a lean team to a global organisation., • You won’t just write code: your work will directly influence how doctors treat patients every day. You will not be one engineer among many. You will be someone who fundamentally shapes the future of Eolas Medical — and of clinical decision-making itself. Contact:

Full Stack Product Engineer – SaaS Startup 🚨. Full Stack Product Engineer – SaaS Startup 🚨. Due to increasing customer demand, they’re expanding their engineering team and looking for product-minded engineers to join them on their journey.

Full-Stack Engineer | Product Engineering (FastAPI, React, Supabase) | AI Start Up. Full-Stack Engineer | Product Engineering (FastAPI, React, Supabase) | AI Start Up.

Mentor engineers in distributed systems, reliability engineering and infrastructure design, acting as a technical reference point. Staff Site Reliability Engineer – Data & Trading Platforms. You’ll be the reliability specialist embedded in a product engineering team, owning how distributed syste

We're seeking a well-rounded Senior Data Engineer to join a Product, Data and Engineering org of 50+ people based out of London and working in scrums and being involved end-to-end across multiple products covering audience insights, analytics and advertising. Data Engineer solving complex and scaled

Senior Android Engineer London (Hybrid — 2 days onsite per week) Kotlin • Compose • Coroutines • Modular Architecture • KMP A high-growth technology business in the data and privacy space is looking for a Senior Android Engineer to join the team building their flagship app. This product helps users understand, control and benefit from their data, and sits at the heart of a rapidly expanding consumer and B2B ecosystem. Their Android app is fully Kotlin-based, heavily modularised, and all new features are built with Jetpack Compose. Coroutines and Flows are used extensively throughout, testing is taken seriously (unit, UI and integration), and Kotlin Multiplatform is now being introduced to share code with iOS. You’ll be joining a collaborative engineering group working on major new features, shaping technical discussions, influencing architecture and API design, and helping to evolve a category-defining product used across the UK, US and several new international markets launching in 2026. What they’re looking for • 5+ years commercial Android experience, • Deep Kotlin knowledge, • Strong experience with Coroutines and Flows, • Experience with automated testing + CI/CD, • Ability to discuss architecture and make tradeoff decisions, • Clear written and verbal communication skills Benefits • Competitive salary + meaningful share options, • Hybrid working (3 days WFH), • 32 days holiday, • Your choice of hardware, • Annual training and conference budget, • Regular team days out, • Real autonomy within a fast-growing organisation

Senior Software Engineer – AI Startup – Up to 120k 🚀🧠 💰 Salary: £70,000 - £140,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Software Engineer – AI Startup – Up to 120k 🚀🧠

Software Engineer – AI Startup – Up to 85k 🚀🧠 💰 Salary: £50,000 - £85,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Software Engineer – AI Startup – Up to 85k 🚀🧠

Shape the future of safety-critical technology. Join a fast-growing medical technology challenger brand driving innovation in medical technology and beyond. This is your opportunity to work on systems that truly matter: life-supporting and life-critical solutions, while building a career that can progress to Principal level and beyond. As a Senior Systems Engineer, you will be at the heart of next-generation product development and sustaining engineering. You will lead risk management and systems architecture across multidisciplinary teams (software, electronics, and mechanical) ensuring compliance with the highest safety standards. Your expertise will influence strategic decisions and technology roadmaps for future products. Responsibilities: • Own system requirements and architecture for complex, safety-critical systems, • Drive risk management activities (FMEA, hazard analysis) and ensure compliance with all relevant standards, • Collaborate with V&V, Quality Assurance, and Regulatory Affairs to deliver robust, compliant solutions, • Lead design reviews, verification and validation, and continuous improvement initiatives, • Shape technology roadmaps and contribute to next-generation product innovation, including GUI interfaces, cloud connectivity, and cybersecurity for sensitive data Requirements: • Systems engineering experience with complex systems or devices, • Preferably software engineering background (or electronics), • Degree in engineering or related discipline., • Proven experience in systems engineering within regulated, safety-critical industries: medical devices, defence, nuclear, or aerospace., • Strong background in requirements management, risk analysis, and system architecture, • Ability to work across multiple domains and disciplines., • Experience working in mid-sized company Why Join our client? • Hybrid working: 3 days on-site in Croydon, 2 days remote, • Modern, purpose-built offices with advanced labs, • Visa sponsorship for UK, • Competitive salary and clear career progression Make an impact where it matters most. Apply today and take your career to the next level.

Full Stack Engineer – AI Startup – Up to 85k 🚀🧠 💰 Salary: £60,000 - £85,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Full Stack Engineer – AI Startup – Up to 85k 🚀🧠

Senior Full Stack Engineer – AI Startup – Up to 150k 🚀🧠 💰 Salary: £80,000 - £150,000 + meaningful equity 🏙️ Location: London, hybrid 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) 📈 Team size: 27 heads Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Full Stack Engineer – AI Startup – Up to 150k 🚀🧠

Senior Full Stack Engineer (React, Typescript, Node, AWS) HealthTech, up to £90k London (once or twice per fortnight in office) Troi Search are delighted to be partnering once again with this innovative & mission driven HealthTech client. We’re now looking for a Senior Full Stack Engineer who enjoys balancing hands-on coding with architectural thinking. You’ll build scalable, secure, cloud-native products used in real clinical environments, and collaborate closely with product and design to turn complex problems into elegant solutions. What you’ll do • Build and scale full-stack features using TypeScript, Node.js, and React, • Design reliable, observable systems running in the cloud (AWS), • Champion CI/CD, automated testing, and zero-downtime deployments, • Mentor engineers and raise engineering standards, • Experiment with emerging tech like AI, computer vision, and advanced analytics What we’re looking for • 5+ years building SaaS or enterprise software, • Strong experience with React, Typescript, Node & AWS Technologies, • Solid cloud and DevOps knowledge, • Comfort working in data-sensitive or regulated environments, • A pragmatic mindset with a bias for delivery Why join • Build technology that genuinely impacts patient care, • High ownership, low bureaucracy, real influence, • Salary up to £90k, Flexible working, strong benefits package plus a learning budget Sound like you? Apply now!

*Note that the job description below is for a full stack dev. If you specialise in either frontend or backend and fit the role description below, we would still love to hear from you. Who we are Wondercraft is an AI video studio that makes it easy for anyone to create video. It brings together the latest AI models across video, images, voice, and sound, and organises them into simple, guided workflows. This allows people without editing expertise to create professional, business-ready video. AI video for business has largely meant avatars until now. That was the first wave. Today, advances in visual AI have opened up far richer possibilities, beyond talking heads. Video generation is no longer the bottleneck. Making it usable is. Role Description You will help Wondercraft define the future of its AI video studio. You will work with the engineering team to build features towards that vision, and work closely with the design and customer success team to refine user experience. Specially you will be focusing on: • You will be designing and architecting the feature alongside the design team, customers, and our CEO/CTO, • You will work on both the front-end and the backend of a feature. At Wondercraft, everyone touches everything., • You will work with the design team to refine specs and designs for a feature you’re working on. We are looking for You’ll have the opportunity to own critical features and contribute to the overall architecture of Wondercraft, and work with cutting-edge technologies and solve challenging problems. We would love to hear from you if you are: • Someone with 3-5 years experience as a full stack dev in a fast growing company. Former founding engineer or engineering lead preferred., • Someone who is proficient in Python, React, Typescript, NextJS, AWS, and Terraform, • Someone who thrives in a fast-paced environment and is hungry for impact. We are young and eager, and we need you to be eager to contribute to the same vision we have., • Someone who is a natural when it comes to ownership. You are good at following instructions, but also goes out of your way to think about what truly makes a feature top notch., • Someone who is a team player and a strong communicator, who works collaboratively with both the internal and external teams to drive high-quality results., • Someone who is based in London, UK or willing to relocate to London. We believe bouncing ideas off of each other in the office keeps us close and propels us forward constantly., • Ultimately, we’re looking for someone with a “leave it with me” attitude, who can ingest chaos and output a high-quality product. And in it for you • £80k - £100k + equity based on experience and skills you bring to Wondercraft, • Take what you need holiday, • 2 days a week WFH, • Private health insurance

Backend Engineer (Rust / Python – DeFi Trading) London or Remote (Europe) A DeFi-native trading platform is building high-performance, user-focused trading tools and is looking for a backend engineer to help shape the core platform. The team strongly believes DeFi is the future of finance and is focused on making fast, reliable on-chain trading accessible to everyone. You’ll work hands-on with Rust and Python, build public APIs, and integrate directly with smart contracts and trading logic. This is a highly product-driven role with real ownership and daily production impact. What they’re looking for • Strong experience with Rust and/or Python, • Hands-on experience working with EVM smart contracts (application-level Solidity, not just theory), • 3–4+ years in crypto / DeFi–native roles, • Solid understanding of decentralised exchanges and the current DeFi landscape, • A grasp of trading concepts, or a strong desire to move deeper into trading systems, • Experience running production systems in the cloud Nice to have • Writing and deploying smart contracts, • Experience diagnosing performance or latency issues, • On-chain trading experience or strategy work, • Exposure to other ecosystems such as Solana, Sui, or Cosmos A strong opportunity for someone who is deep in crypto, cares about the product as much as the code, and wants to help build the next generation of DeFi trading tools.

A leading ESG Data firm focusing on AI is seeking a talented and experienced Lead Software Engineer to join their growing technology team in London. In this role, the successful candidate will play a key role in executing new projects and supporting existing applications that drive operational efficiency across the business. The role will remain hands-on, with responsibility for designing systems, writing production code, and solving complex technical challenges, while also taking ownership of the people and processes that enable the engineering team to operate effectively. Working closely with the CTO, the successful candidate will help shape the company’s technical direction, drive delivery against the product roadmap, and contribute to building a high-performance engineering culture. On a day-to-day basis, the position balances technical contribution with leadership responsibilities. This includes mentoring and supporting engineers in their development, coordinating delivery to ensure key milestones are met without compromising quality or team wellbeing, and acting as the engineering representative in cross-functional discussions. The role will also play a key part in evolving the technology stack, tooling, and engineering practices, identifying strategic improvements that enhance the team’s ability to deliver reliable software at pace. Contact Ciara Clarke at Harrington Starr for a confidential discussion on this role.

A fast-growing AI-driven SaaS company is hiring three Senior Software Engineers to join its engineering team. These are hands-on roles with a strong backend and architectural focus, ideal for engineers who enjoy working in scale up or startup environments and want to build high-quality, cloud-native software that powers real-world automation. You’ll be part of cross-functional squads delivering modern, serverless, AI-enabled applications used in highly regulated industries. The company has a strong engineering culture, embraces AI-assisted development, and offers autonomy, impact, and the chance to help shape technical direction. Role: Senior Software Engineer Salary: £70,000 to £80,000 per annum Location: Fully Remote (UK-based) What you’ll be doing: • Design, build, and optimise scalable software using Node.js, TypeScript, React, AWS Lambda, Step Functions, DynamoDB, • Contribute to architecture discussions and ensure solutions are secure, cloud-native, and maintainable, • Use AI-assisted tooling to speed up development, testing, and debugging, • Work closely with Product, Delivery, and Technical Leads to refine requirements and deliver iteratively, • Mentor junior engineers and conduct code reviews to maintain quality and consistency, • Help drive best practices across DevOps, CI/CD, observability, and secure coding, • Collaborate with other squads to ensure technical alignment across the platform What you’ll need: • Strong full stack experience with a backend-first mindset, • Expertise in Node.js, TypeScript, React, and modern cloud engineering, • Hands-on experience with AWS serverless, particularly Lambda, Step Functions, DynamoDB, • Solid understanding of scalable architecture and performance optimisation, • Experience in scale ups, startups, or SMEs where speed, ownership, and adaptability matter, • Strong debugging, problem solving, and delivery skills, • Interest in or experience with AI-assisted engineering tools (e.g. GitHub Copilot), • Comfortable working in agile squads and contributing across the full SDLC What’s on offer: • £70,000 to £80,000 per annum, • Fully remote working across the UK, • Modern AI-first engineering environment, • Real ownership and impact in a growing product-led team, • Opportunity to shape tooling, workflow, and engineering standards, • Clear progression path into Technical Lead, • Collaborative culture with a focus on high-quality engineering and continuous improvement If you’re a hands-on engineer who enjoys building scalable backend systems, working cloud-first, and embracing AI-assisted development, this is a great opportunity to join a fast-moving team solving meaningful technical challenges.

Engineering Leader | AI-Native B2B SaaS | London (Hybrid) £150k-£200k + meaningful equity The mission Join a revenue-generating AI-native SaaS startup solving complex workflow problems for modern enterprise teams. Already scaling fast with £30m raised and Series A incoming from top-tier VCs, this is a chance to build the UK engineering hub from scratch. The role Step in as the most senior engineering leader, owning technical vision, architecture, team-building and execution end-to-end. You'll partner directly with founders/CEO, balancing rapid scaling with long-term platform quality in a high-growth environment. What you’ll do • Set the technical strategy and architecture as the platform handles real customer scale., • Build and lead a high-calibre London engineering team (from 9 to 20+ in 12-18 months)., • Stay close to product and customers, driving decisions that balance speed, quality and sustainability., • Shape engineering culture, hiring standards and processes from the ground up., • Collaborate with founders on priorities, execution and scaling the go-to-market hub. What you bring • Experience as Engineering Leader, Head of Engineering, Staff/Principal Engineer or early CTO in high-growth startups., • Proven track record scaling early/mid-stage products with real revenue and traction., • Strong technical foundation and product mindset; comfortable with ambiguity and pace., • Energised by full ownership, autonomy and building teams/cultures that deliver. Why you might care • Rare "build from scratch" opportunity at a seed-stage company that's already proven (revenue, customers, funding)., • Direct partnership with exceptional founders from top companies, plus serious equity upside., • London hub with significant investment, becoming one of the largest engineering centres for the business.

MEP Engineer – Building Services / Water Systems (London) A fast-growing series C-backed AI company operating at the intersection of building services, water engineering, and smart infrastructure is hiring an MEP Engineer to join its UK Solutions & Engineering function. This role sits at the point where engineering design, site delivery, and commercial planning meet. You’ll work closely with internal teams across solutions, project delivery, and customer-facing functions to design and scope water systems for real construction and retrofit projects across the UK. It’s a technically focused position with exposure to clients and live sites, well-suited to an engineer who enjoys applying design expertise in practical, real-world environments. What You’ll Be Doing • Reviewing and interpreting MEP drawings, plumbing schematics, and specifications, • Conducting on-site surveys to assess installation and integration requirements, • Designing and scoping water system solutions for UK buildings, • Supporting early-stage technical planning and system siting, • Collaborating with commercial, delivery, product, and customer teams throughout the project lifecycle, • Contributing to best-practice standards and technical documentation What They’re Looking For • 4+ years’ experience in MEP / Building Services / Water Engineering, • Strong understanding of UK building regulations and standards, • Confidence producing and reviewing MEP documentation, • Experience using AutoCAD and/or Revit, • Background in plumbing systems or water management preferred, • CIBSE membership (or working toward) advantageous, • Comfortable working across office, site, and collaborative environments Package & Environment • £80,000 base salary + £20,000 annual bonus, • London-based role (3 days per week in office), • Exposure to UK and international projects, • Opportunity to grow into senior technical or solutions leadership roles within a scaling busines

Product Engineer | FastAPI, React, Supabase | Generative AI Start Up • Salary: Up to £100k + meaningful equity, • Location: Central London Offices, On-site, • (Sponsorship is not available at this time.) The Role You’ll join a small, high-calibre engineering team building AI-native products from the ground up. In this role, you will work across the full stack to architect, build, and ship production systems powering multimodal AI agents. You’ll design intuitive interaction models for human–AI collaboration, develop scalable backend services, and rapidly prototype new features at pace. You’ll also work directly with the founding team to shape technical direction, defining the platform architecture and helping build a genuinely new category of agent-led product development. This is a true 0→1 engineering environment where you’ll have deep ownership and impact. Non-Negotiables • Full-stack engineering experience with production delivery, • Ability to ship end-to-end features in containerised environments, • Comfortable navigating ambiguity, shifting priorities, and rapid experimentation, • Strong problem-solving mindset with ownership and resilience Nice to Haves • Founder or founding engineer background, • Experience building interfaces for agentic workflows, • Exposure to LLMs, multimodal models, or agent UX (AX), • Experience shaping technical strategy in early-stage teams What You’ll Work With • FastAPI backend development, • React engineering and modern frontend tooling, • Supabase or similar cloud-native backend tools, • LLM agent workflows: tool calling, memory, retries, context updates, • Human–AI interaction models and agent UX (AX) design, • System design, architecture evolution, and scaling pathways, • MCP integrations and multimodal agent capabilities Why join You’ll join a deeply AI-native engineering culture where you’ll help define how humans and agents build products together. You will: • Influence core platform architecture during its foundational stage, • Build and iterate on multimodal agent systems, • Prototype and refine new models of human–agent collaboration, • Work closely with founders on strategy and product direction, • Be part of a high-intensity, supportive team obsessed with building exceptional products Product Engineer | FastAPI, React, Supabase | Generative AI Start Up

About the Role We’re looking for a Founding Software Engineer to join an early-stage AI company and help build a real product used by real customers. You’ll have end-to-end ownership - from shaping ideas and designing solutions to shipping to production and iterating with customer feedback. You’ll work closely with the CTO / Head of Engineering and be one of the engineers defining the technical bar, culture, and product direction. If you’re a genuine builder who enjoys responsibility, ambiguity, and building things that matter - this role is for you. Team: 6 engineers, scaling to 12–15 What You’ll Do • Own product features end to end: design, implementation, deployment, and iteration, • Build production-grade systems with Python and LLM integrations, • Turn real customer problems into scalable technical solutions, • Work closely with product, operations, and customers, • Contribute to architecture decisions and engineering standards, • Help shape team culture and ways of working as an early engineer What We’re Looking For • Senior-level software engineer (founding / early-stage experience is a big plus), • Hands-on experience integrating LLMs into real products, • Strong backend experience (Python preferred), • Comfortable working directly with customers, • High ownership, independence, and maturity Location • On-site in London, 5 days per week (mandatory), • Visa sponsorship available for strong international candidates If you’re excited about building real AI products, working closely with customers, and being part of a high-bar founding team — we’d love to hear from you.

Senior DevOps Engineer – EdTech – AWS, Kubernetes, Terraform, CI/CD, Monitoring Oliver Bernard are currently working with an established EdTech company, based in London, looking to expand their DevOps function with a Senior level engineer. The incoming profile will have the chance to work across AI and Data driven platforms, influencing scalability as they expand the usage of the product, whilst driving DevOps best practices. The incoming engineer must be comfortable in a Senior capacity, able to lead from the front, mentor others, and be comfortable working in an embedded capacity across different teams / squads. From a hands-on perspective, to be considered for this opening you’ll need at least 5-6 years’ experience, encompassing the following: • Hands-On Cloud experience with AWS and AWS Services, • Expert knowledge of Containerisation with Docker and Kubernetes, • Strong Infrastructure as Code experience with Terraform, • History of CI/CD experience, specifically with GitHub Actions, • Strong Monitoring experience with DataDog, • Recent hands-on project work with Python and Lambdas This position is open to Senior level Engineers, able to offer £70-80K, and operates a remote first model (with only quarterly visits required). Please apply here to register interest in this opportunity. Senior DevOps Engineer – EdTech – AWS, Kubernetes, Terraform, CI/CD, Monitoring

About Us We are a VC-backed startup focused on hyper-personalisation, currently in stealth. Inspired by the latest in recommender systems, we leverage transformers and graph learning alongside decision-making models to build the most engaging customer experiences for in-store retail. Our mission is to change retail forever through hyper-personalised experiences that are both simple and beautiful. About the Role As a Senior MLOps Engineer, you will own the infrastructure and tooling that turns experimental models into dependable production systems. You will build the pipelines, monitoring, and deployment workflows that allow our research engineers to move fast without breaking things. If you want to operate at the intersection of machine learning and production systems engineering, this role is for you. Key Responsibilities • Build and maintain CI/CD pipelines for model training, evaluation, and deployment across research, staging, and production environments., • Design and implement model registries, versioning systems, and experiment tracking to ensure full reproducibility of all model releases., • Deploy ML workflows using tools like Airflow or similar, managing dependencies from data ingestion through model deployment and serving., • Instrument comprehensive monitoring for model performance, data drift, prediction quality, and system health., • Manage infrastructure as code (Terraform, or similar) for compute resources, ensuring efficient scaling across training and inference workloads., • Collaborate with research and engineering teams to establish system SLOs/SLAs aligned with business objectives., • Build tooling and abstractions that make it easy for Research Engineers to deploy models reliably without needing deep infrastructure knowledge., • Ensure compliance, governance of all ML processes and workflows. Essential Qualifications • Experience building and operating ML infrastructure, ideally in production environments serving real users., • Strong proficiency in containerisation (Docker, Kubernetes) and orchestration of multi-stage ML workflows., • Hands-on experience with ML platforms and tools such as MLflow, Kubeflow, Vertex AI, SageMaker, or similar model management systems., • Practical knowledge of infrastructure as code, CI/CD best practices, and cloud platforms (AWS, GCP, or Azure)., • Experience with relational databases and data processing and query engines (Spark, Trino, or similar)., • Familiarity with monitoring, observability, and alerting systems for production ML (Prometheus, Grafana, Datadog, or equivalent)., • Understanding of ML concepts. You don't need to train models, but you should speak the language of Research Engineers and understand their constraints., • A mindset that balances reliability with velocity: you care about reliability and reproducibility, but you also enable teams to ship fast. Desired Skills (Bonus Points) • Experience delivering API services (FastAPI, SpringBoot or similar)., • Experience with message brokers and real-time data and event processing (Kafka, Pulsar, or similar). What We Offer • Opportunity to build technology that will transform millions of shopping experiences., • Real ownership and impact in shaping product and company direction., • A dynamic, collaborative work environment with cutting-edge ML challenges., • Competitive compensation and equity in a rapidly growing company.

*our client is unable to offer sponsorship - only apply if you have the right to work in the UK Overview Our client is a well-funded startup (c200 people) and readying to scale. They have award-winning solutions in the fast-moving digital advertising space with petabyte scale proprietary data. The Role We're seeking a hands-on Data Engineering Manager to lead a team of Data Engineers and work alongside the Head of Engineering and Principal Data Architect and the Product team. You will join a Product, Data and Engineering org of 50+ people based out of London and NYC and will create the standard for the data practice and ensure best in class design and delivery, working across multiple products covering audience insights, analytics and advertising. You'll be relied upon to get the data stack AI ready, drive innovation and leverage Agentic development where its needed. Technology / Skills requirements • SQL and another language e.g. Python, • ELT/ETL, • CI/CD, • Data Modelling, • Data Architecture, • Data Frameworks, • dbt, • Data processing and orchestration using Airflow or similar, • Google BigQuery or Redshift, • Cloud based services: GCP (preferred) or AWS, • Agentic development frameworks, • Automations About You • 6 years+ experience as a Data Engineer solving complex and scaled data challenges, • 2 years as a manager or mentor or data engineers, • Problem-solver mindset and think creatively with data, • You welcome responsibility and want to shape products, • Can understand business requirements and translate into technical output and vice versa, • Excellent communicator able to distil down complex matters to various stakeholders What's on offer • Work alongside some of the brightest minds and leading advertising technologies, • Shaping the future of online advertising, • A genuinely memorable experience you will look back on fondly, • Health & Wellness package, • Medical Insurance, • Income Protection, • Childcare vouchers, • Gym & Cycle scheme, • Pension, • Life Assurance, • Hybrid working (2-3 days) from a Central London office, • 30+ holidays plus bank holidays (pro-rated), • Lots of one-off and regular treats & socials We're screening & interviewing right away - so apply now if this sounds like you - or get in touch if you know someone that might be more closely suited for a generous referral fee

Locations: South West/East London, Islington or Haringey or Central London We have several Fire and Security Systems Engineer opportunities in the London area. The role will be remote so you will need to be based within easy travelling distance of your locations. You will need to be experienced in Servicing/Installation Fire Alarms, CCTV and Access Control What you will doing: Attend to calls for maintenance (on site and or by telephone) as directed by team co-ordinators Rectify all faults on the first visit where rectification is within your control. Carry out rolling programme of preventative maintenance visits. Collection/recording of site configuration information. Maintain car stock (spares) levels. Maintain accurate and timely records. Provide cover on an out of hour’s basis on a rotating basis. Commission small projects when required. Ensure that audits are carried out of quality procedures. Provide training to customers and colleagues as required. Carry out any additional tasks that may be required What we are looking for: Previous electrical mechanical experience Experience installing & servicing a wide product base of access control systems, CCTV systems and intruder alarm systems. Experience of servicing fire alarm systems, ideally GENT based. An IT qualification and or Electrical/Electronic qualification A broad technical IT knowledge, i.e. Installing various Windows Operating Systems; networking etc Knowledge of basic electrical principals such as measuring voltage and current drain Good attention to detail in order to ensure that all paperwork is correctly completed, and procedures are followed within the allotted timescales. An enthusiastic team player who is able to work well under pressure and maintain a professional approach at all times Compensation package: Company Car/Van Workplace pension scheme Contributory Healthcare Scheme Eyecare vouchers Employee Discount Schemes Progression, training & development opportunities Refer a friend scheme

Role: Staff Software Engineer Location: London – Hybrid (2-3 days per week) Compensation: Up to £180,000 + equity We’re working with a fast-growing technology company transforming a highly traditional global industry through advanced AI and computer vision. Their platform turns complex, real-world environments into rich digital systems, using data to dramatically reduce cost, time, and risk for customers operating at scale. The product is already live across multiple international markets and is backed by a strong group of institutional investors and industry leaders. The opportunity: Staff Software Engineer This is a rare opportunity to join a small, high-calibre engineering group as a founding member of a newly established London R&D team. You won’t just be joining an existing organisation — you’ll help define how the team operates, what it builds, and how it scales. What you’ll do • Design, build, and scale core backend systems and data pipelines that process large volumes of real-world data., • Architect highly reliable, high-performance cloud systems operating in production environments globally., • Work hands-on with diverse and complex data types, integrating advanced data processing and computer vision workflows., • Own backend architecture decisions that directly impact product quality, scalability, and commercial success., • Write clean, testable, well-observed code with a strong focus on reliability, monitoring, and performance., • Collaborate closely with other senior engineers to establish best practices for a growing R&D organisation. You should have • Significant experience as a backend engineer, operating at senior or staff level., • Strong Python expertise and comfort building production-grade systems., • Deep experience designing and operating large-scale, distributed backend systems., • A track record of working on performance-critical, data-intensive applications., • Comfort operating in fast-moving environments where architectural decisions have wide-reaching impact., • Strong collaboration skills and experience working in small, high-ownership teams. Tech stack & environment • Python-first backend development., • Cloud-native infrastructure (AWS preferred)., • Containerisation and orchestration (Docker, Kubernetes)., • Message queues and streaming systems (e.g. Kafka, SQS, RabbitMQ)., • Relational and/or NoSQL databases., • CI/CD pipelines, observability, monitoring, and logging as first-class concerns., • Exposure to computer vision, 3D data, or similar domains is a strong plus, but not required. Why it’s exciting • Be a founding engineer in a newly formed R&D team with real influence over direction and culture., • Work on technically complex problems with clear real-world impact., • Build systems that operate at scale, across global, production environments., • High trust, high ownership, and the opportunity to shape both technology and organisation., • Strong backing, real product traction, and a long runway for growth. If you’re excited by the idea of building and scaling deeply technical backend systems, shaping a new engineering team, and solving complex real-world problems at scale, we’d love to hear from you.

Front End Engineer / Developer (React v19 TypeScript) London / WFH to £95k Are you a Front End technologist looking for an opportunity to progress your career in a hands-on role with lots of learning opportunities? You could be joining a Hedge Fund with complex work and substantial bonus earning potential. As a Front End Engineer you'll join a globally distributed team to develop engaging and simple user interfaces across all internal business systems. You'll collaborate with UX and Product teams, actively participating in all stages of a project, through product design, development, implementation, testing and maintenance. Location / WFH: You'll join colleagues in the impressive Central London office with flexibility to work from home twice a week. About you: • You have strong Front End development skills with React (they're using v19) and TypeScript, • You are experienced with other web technologies such as HTML, CSS, Web APIs, • You have a strong knowledge of Computer Science fundamentals including OOP, Design Patterns, Data Structures, • You have experience of working in large, fast paced organisations, • You are collaborative with great communication skills, • You are degree educated, having achieved a 2.1 or above in Computer Science or similar technical discipline What's in it for you: As a Front End Engineer you will receive a competitive package: • Salary to £95k, • Bonus, • Pension, • Self development and career progression opportunities Apply now to find out more about this Front End Engineer / Developer (React v19 TypeScript) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

About the role As a CRO Engineer with expertise in Telecommunication domain. We are looking for an experienced Senior Optimisation Engineer to work in our Optimisation team to help build out the web UI campaigns for our new services and applications. Tell me more, tell me more… Our client is currently looking for a recruit in joining their current team, below are the job details for your reference: You can also ask our friendly recruitment team for any questions you may have about the role, between 09.00am till 17.00pm Monday to Friday. Shifts: Monday to Friday (37.5 hours) Roles and Responsibilities: • Develop and optimize web applications using the Angular framework, ensuring alignment with business OKRs and enhancing customer engagement and satisfaction metrics., • Implement experimentation, optimization, and personalization strategies to improve UI performance and deliver a seamless user experience., • Collaborate with cross-functional teams including business partners, engineers, data scientists, and UX designers to design, build, and deliver high-quality applications and services., • Utilize optimization tools within an Agile squad to continuously improve engineering quality, design, implementation, and operational excellence of the product., • Conduct thorough testing and documentation of complex applications, tools, and systems to ensure reliability, scalability, and maintainability., • Drive innovation and forward-thinking practices that foster an inclusive environment where team members can thrive and bring their authentic selves to work. The must haves: • 5+ years of developing A/B / MVT optimisation experience campaigns, • Front end development experience in either REACT or Angular framework, • Proficiency knowledge in JavaScript, jQuery, Vanilla JS, CSS and HTML, • A passion for great online experience and an understanding of end-to-end user journeys and customer experience/CX, • Experience of an automation testing to write regression tests, • Solid experience of website personalisation and audience targeting, • Solid experience of working with fully responsive websites, • Experience of developing in TypeScript and JavaScript, Python or Java., • Prior use of split testing platforms is preferable - Adobe Target, Optimizely, Google Optimize, • A good understanding of design patterns, OOD, design and data structures, • Hands on expertise in disparate technologies such as cloud computing, native device development, CMS solutions, service-oriented architecture, user interface development, or machine learning. What’s in it for you? – Our client loves to reward their people for doing a great job. • This is until Feb 2026 (will extend), • This role provides a hybrid working access in Paddington (2 days in a week) Next Steps Once you’ve applied, one of our friendly recruitment consultants will give you a call and talk you through the screening process. If your application is successful, you’ll be involved in a live virtual interview with one of our client’s hiring managers to get to know you better. We look forward to speaking to you!

Global-e (Nasdaq: GLBE) is the world’s leading platform to enable and accelerate global, direct-to-consumer cross-border e-commerce growth. The chosen partner of hundreds of retailers and brands across North America, Europe, the Middle East and Asia, Global-e makes selling internationally as simple as selling domestically. With Global-e, retailers and brands can increase international traffic conversion and grow sales by offering customers in over 200 destinations worldwide a seamless localized shopping experience. We're looking for a skilled and enthusiastic Solutions Engineer to play a key role in supporting our Sales, Project, Product and R&D teams, conducting technical discussions with online retailers and brands wishing to expand their cross-border business with Global-e. The job will include leading the technology and integration tracks in face-to-face as well as remote meetings with prospect and existing clients, being always up to date with ongoing and future developments of Global-e’s systems, as well as taking client’s feedbacks, inputs and requests back to the Product and R&D teams. Responsibilities: · Help clients understand the power and flexibility of Global-e’s platform, explaining technical features and problem solving any potential roadblocks · Work with the team to identify and qualify business opportunities, identify key customer technical objections and develop the strategy to resolve technical impediments · Make recommendations on integration strategy required to successfully implement a complete solution providing “best practice” advice to customers to optimize the integrated Global-e platform effectiveness · Act as a technical focal point for integrating clients, have the technological savviness required to demonstrate and prototype integrations in merchant environments · Provide ongoing education and technical assistance to current partners and integrate clients · Become a Product expert up to date with features and product roadmaps, by actively participating in internal technical discussions, contributing “field-level” feedback from clients and prospects - act as the Product’s and R&D’s teams mediator. Requirements: · 3+ years experience in solution design / integration with direct client interaction, in SaaS-based environment - solutions engineer role preferred · Strong communication skills with the ability to deliver a solution pitch and convey complex technical concepts to both technical and non-technical audiences · BA/BS/Master degree in Computer Science or another technical field · Firm understanding of systems integration concepts, API implementation (RESTful services) and relational databases (SQL) · Established problem-solving skills and troubleshooting abilities · Experience in close working interactions with distant teams · Ability to learn and work with varying technological environments (including emerging technologies), methodologies, and solutions in the Cloud/IT Technology space · Ability to multitask and work well under deadlines in a changing environment · Previous experience in eCommerce and Logistics/Operations environment is a strong advantage

Do you want to shape how LLMs are deployed at scale in a real business? Have you built RAG or agentic systems that moved beyond experimentation? Are you motivated by measurable customer and commercial impact, not demos? A private-equity-backed consumer services business is scaling its Data Science & AI capability as part of a multi-year transformation. Following an award-winning data programme, the company now has an established AI function and is investing further in LLM-powered assistants, RAG pipelines, voice/chat intelligence and early agentic workflows across both customer-facing and internal products. This Senior AI Engineer role is a hands-on individual contributor position, sitting between Data Science and AI Engineering. You will lead AI proof-of-concepts, design retrieval and context strategies, contribute to the AI architecture, and ensure solutions are robust, scalable and commercially grounded. The role spans the full AI lifecycle, from data preparation and model evaluation through to deployment and optimisation. Key responsibilities • Lead development of LLM and AI proof-of-concepts, • Design and implement RAG pipelines and agentic workflows, • Define evaluation frameworks for LLM quality and response accuracy, • Partner with product and engineering on chat flows and continuous improvement, • Contribute to AI platform architecture and best practices, • Mentor junior ML / AI engineers (no formal line management) Key details • Salary: £80,000 base + 10% bonus, • Pension: 5% matched, • Working model: Hybrid, 3 days per week (Tuesday & Wednesday fixed), • Location: Central London, • Stack: Python, Databricks, RAG, vector databases, Azure (preferred), LangChain / LangFuse, • Visa: This role cannot sponsor Interested? Please apply below.

🌍 Senior Software Engineer | Climate Tech | London (Hybrid) A climate tech startup building tools that make clean energy the default choice is looking for engineers who enjoy deep technical challenges and want their work to create real-world impact. Their platform helps stabilise the grid by shifting energy usage to cleaner, cheaper periods. It’s large-scale optimisation across EVs, home batteries, and heating systems - all driven by data and machine learning. They’re backed by leading investors, scaling quickly, and building the core technology behind a smarter, low-carbon energy network. 💡 Why join: • Work on projects that touch millions of households, • Enjoy autonomy, trust, and a fast-moving environment, • Play a key role in shaping the product and engineering culture 🚀 What they value: • Curiosity and a drive to learn quickly, • Genuine interest in clean energy and climate solutions, • Team players who are comfortable with startup pace Python is their main stack, but they’re open to engineers with experience in any modern OOP language. 📍 Hybrid in London (2–3 days onsite) Interested? Apply now!

Role : Senior Full Stack Engineer (I) Reporting To : Chief Product Officer Salary : £70,000 - £90,000 dependent on experience Working Location : Hybrid/ London (2 days a week on site at our Old Street office) PropTech | SaaS | Software Development 🏢 About Searchland Searchland is a high-growth, B2B prop-tech company transforming how businesses and individuals access and leverage property data. Our platform empowers property developers, land agents, architects, and planners with real-time insights, helping them make smarter, data-driven decisions when acquiring and developing land. In just five years, we’ve built one of the UK’s most advanced property data pipelines, integrating thousands of data sources and processing terabytes of information with less than 24-hour latency. Our cutting-edge platform is shaping the future of property intelligence 👩🏽 About the Role We’re looking for a skilled Senior Full-Stack Engineer to join our lean and fast-moving team. This is a development-focused role where you’ll take ownership of bringing ideas to life - writing clean, reliable code and shipping high-quality features across the stack. You’ll work on everything from building performant frontends to designing scalable backend APIs and managing database architecture. While product thinking is always welcome, your primary focus will be on turning technical requirements into production-ready solutions. 🎯 What You’ll Do • Design, build, and maintain full-stack features across the platform, • Develop performant and accessible front-end components using React (Vite) + Tailwind CSS, • Build scalable and type-safe APIs with tRPC running on Node.js/Express, • Model and query relational and search-optimized data using PostgreSQL and Elasticsearch, • Contribute to backend architecture, performance tuning, and refactoring work, • Collaborate with technical and non-technical teammates to clarify requirements and break down work, • Own implementation from development through to deployment and monitoring 🌟 You Are You’re a hands-on engineer who enjoys solving real-world problems through clean, pragmatic code. You’re comfortable wearing many hats and enjoy the variety and pace of startup life. You don’t wait for instruction - you look for opportunities to add value and move things forward. You likely bring the folloqing • A track record of shipping and supporting features end-to-end, ideally within lean or startup environments, • Confidence working across the full stack and willingness to dive into new areas when needed, • Clear communication and the ability to work autonomously, • Experience working in a small team or solo engineering set up 🎯 Essential Experience • Right to work in the UK, • 5+ years experience leading software development for a SaaS platform, • Proven experience with our stack (or strong adjacent experience and the ability to ramp up quickly), • Frontend : React (Vite),Tailwind, • Backend : Node.js, Express, tRPC, • Database : PostgreSQL, ElasticSearch ➕ Desired Experience • Previous experience in PropTech and/or start up environments, • Understanding of the UK property/construction market would be a huge plus 🤝 Interview Process • Initial introductory call with our HR team., • A technical task stage before a 45 minute interview with one of our Senior SoftwareEngineers., • Final stage interview with our CTO 🌱 Why Join Us? • Hybrid working: 2 days a week in our Old Street Office, • Compensation : Competitive salary, salary sacrifice pension scheme, EMI Scheme, • Time off & wellbeing: 25 days holiday + bank holidays, birthday off, Christmas shutdown, HealthShield cash plan including dental, • Growth & development: mentoring, clear progression paths, £500 annual personal growth fund, • Tools & perks: MacBook and a home office contribution, • Culture: monthly socials, team lunches, bake-offs, 3 Peaks challenge, and company trips abroad when targets are hit 🌍 Our Commitment to Inclusion We are committed to creating an inclusive and diverse workplace where everyone feels valued and empowered to thrive. We welcome applications from all backgrounds, regardless of race, ethnicity, gender, sexual orientation, disability, age, religion, or any other characteristic. If you require any adjustments during the recruitment process, please let us know—we are happy to support you.

Software Test and Validation Engineer – London (Hybrid) – circa £45-£55 per hour (Umbrella) - 12 month contract About the Role: We are seeking a motivated Software Test and Validation Engineer to join our client’s Product Development team. In this role, you will help ensure our software-controlled systems operate safely and reliably, working on cutting-edge engineering products. You will develop and execute comprehensive test programmes, perform system-level tests, and provide detailed feedback to support product improvements. Key Responsibilities: • Independently plan and execute unit testing and system integration testing., • Perform embedded software unit testing to verify functionality, accuracy, and reliability of individual components., • Conduct software integration testing, verifying interactions between software, hardware components, subsystems, and external interfaces. Suggest simulation or emulation techniques to improve system-level testing., • Recommend and implement automated testing frameworks and tools to optimise processes, improve productivity, and ensure consistent results., • Support the software release process, ensuring builds are ready and software issues are effectively evaluated. Experience and Skills: • Mid-level experience in product testing involving firmware and software., • Hands-on experience writing test cases, executing tests, and producing detailed test reports., • Proficiency in C/C++ programming and embedded systems., • Experience with embedded testing tools and standard testing methodologies., • Understanding of electronic/electrical systems (mechanical experience not required). Preferred Qualities: • Strong team player with excellent communication skills, able to collaborate with software, hardware, and validation teams., • Able to take ownership of testing procedures and work closely with development engineers., • Experience with system-level testing and complex engineering products., • Candidates currently in permanent roles are welcome, though contract applicants will also be considered. Why Join the team: • Be part of a collaborative and friendly team, where your contributions make a real impact., • Work on innovative, high-tech products that support critical systems globally., • Opportunities to grow your skills in embedded software testing and validation. How to apply: To apply for this excellent opportunity, please submit your CV for review.

Software Engineer London / Hybrid | Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Their technology enables clients to access institutional-grade execution, automate manual workflows, and gain greater transparency across their financial processes. Handling billions in transactions each year, they continue to expand their product offering and deliver cutting-edge solutions that help clients manage risk more effectively. The Role This is an excellent opportunity for an experienced Software Engineer — ideally with a background in financial technology or FX — to join a high-performing engineering team within a scaling fintech. You’ll be instrumental in developing and enhancing the company’s core trading and treasury systems, building new features, improving performance, and driving integration across their technology stack. Key Responsibilities • Develop and maintain software across the full stack, • Contribute to architecture and design decisions, • Support, optimise, and maintain production code, • Research and integrate new technologies, • Foster a culture of engineering excellence and continuous improvement Key Requirements • 5+ years’ experience working with C#/.NET, • Experience developing front and middle office systems, • Strong SQL skills, • Experience with cloud-native solutions (Azure or AWS), • Knowledge of event-driven, microservices architectures, • Full SDLC experience — from design through delivery and support Key Benefits • Join a fast-scaling fintech building next-generation financial technology, • Work on complex, high-impact systems handling large-scale transactions, • Collaborative, innovative, and growth-oriented team culture, • Hybrid working model with flexibility and autonomy Please apply via the link provided or reach out to me directly to book in a confidential phone call -

OtherUniversity (OU) is building the world’s first AI-powered university for degree apprenticeships - a new model of higher education that is faster, smarter, employer-funded, and built for real professional mastery. We are looking for a Lead AI Engineer to join as our founding technical hire. This is a hands-on role: you will design, build, and own the core AI systems that power Prof. T, our 24/7 AI professor. If you want to build something important, ambitious, and first-of-its-kind - this is it. What you'll build As our Lead AI engineer, you will: • Architect and deploy OU’s private Azure OpenAI environment, • Build Prof. T v0.1 — our AI tutor trained on curriculum, assessments, and teaching materials, • Create retrieval and vector-based pipelines (RAG) for structured learning content, • Build internal tools for academics to upload, review, and refine materials, • Work with leadership to define our long-term AI roadmap, • Lay the foundation for adaptive learning, personalised coaching, and automated formative assessment, • Set engineering standards, model safety guidelines, and data governance frameworks, • Help scale the AI stack into a proprietary academic engine used by thousands of learners This is a rare opportunity to shape the technical core of an entire institution. What we’re looking for Essential • Experience with Azure OpenAI, OpenAI, LangChain, or similar frameworks, • Strong Python engineering skills, • Practical experience building RAG systems, embeddings, vector stores, • Comfort with cloud architecture (Azure preferred), • Ability to move fast, prototype, and ship, • Experience building MVPs, internal tools, or early-stage AI products, • Strong understanding of prompt engineering, evaluation, and safety guardrails, • Ownership mindset — you want to build and shape the system, not just take tickets Bonus • Experience with LLM fine-tuning or instruction tuning, • Background in edtech, assessment, apprenticeship systems, or LMS tooling, • Previous startup or founding-engineer experience, • Familiarity with SOC2 / ISO data security practices, • Interest in AI ethics, education, or professional training Who you are You want to build something meaningful. You like small teams, high autonomy, and rapid iteration. You enjoy creating systems, not just writing code. You care about impact, not bureaucracy. You’re energised by the challenge of building the AI foundation of a new kind of university. Why join us • Founding engineer role with massive influence, • Build a globally significant AI education product from scratch, • Work directly with the founder/CEO and academic leadership, • Zero bureaucracy - move fast, own outcomes, ship continuously, • London or Dubai (both supported), • Competitive pay (£7k/month), • Mission-driven organisation with UK non-profit status, • You will create the backbone of a new educational model

We're looking for AI engineers who want to build production-ready AI solutions that tackle real-world challenges in life sciences, from RAG chatbots to agentic AI systems supporting evidence-driven projects. You will design, develop, and deploy AI systems that have measurable impact, influence patient access to treatments, and support decision-making in healthcare. Our client is a fast-growing life sciences technology company with offices in the UK and Europe. They specialise in applying AI to accelerate patient access to treatments through practical, evidence-driven solutions. The company values collaboration, innovation, and creating a culture where employees can grow and make a tangible impact in healthcare. Key responsibilities • Design, develop, and deploy AI systems with a focus on RAG chatbots and agentic AI., • Lead real-world evidence projects, ensuring AI solutions are reliable, measurable, and impactful., • Implement data pipelines, retraining workflows, and monitoring to maintain model performance., • Design evaluation metrics to assess accuracy, latency, UX quality, safety, and real-world utility., • Collaborate with product, software, and platform teams to deliver scalable, production-ready AI solutions., • Champion software engineering best practices, including code reviews, testing, CI/CD, and reproducibility., • Ensure AI solutions meet security, compliance, and responsible AI standards. Skills & expertise • Mid-to-senior AI engineer with 3+ years in data science or software engineering, including substantial AI experience., • Strong Python skills and experience with LLM APIs (OpenAI, Anthropic, or similar)., • Expertise in GenAI frameworks (LangChain, LlamaIndex, Haystack, Hugging Face Transformers)., • Hands-on experience with RAG pipelines, vector databases (Pinecone, FAISS, Weaviate), and chatbot deployment., • Proven experience with agentic AI (tool use, planning, multi-step reasoning) and production-level systems., • Experience delivering AI solutions in real-world or evidence-driven projects, preferably in life sciences., • Strong communication skills and understanding of AI ethics, bias mitigation, and responsible AI practices. Desirable skills • Model fine-tuning, knowledge graphs, or multi-modal AI systems., • AWS or other cloud platform experience for scalable GenAI deployment., • Client-facing experience in AI projects. Benefits • Hybrid working model (UK & Europe)., • Career development and professional growth opportunities., • Collaborative culture with a focus on impact and innovation., • Health insurance and wellness programmes., • Access to cutting-edge AI tools and projects. Your consultant As a Recruitment Consultant at Aspire Life Sciences, Jack Wilson specialises at the intersection of technology and life sciences. He focuses on placing high-level Data, AI and Machine Learning talent with fast-growing startups across the UK, Europe, and the USA. Jack’s deep industry insight allows him to connect candidates with roles where cutting-edge technology meets life-saving healthcare innovation.

Overview The Maintenance Engineer will play a key role in supporting day-to-day production operations, including machine programming, process validation, and technical support to the manufacturing team. This position will focus on driving process improvements, enhancing manufacturing efficiency, and maintaining high standards of product quality through continuous improvement initiatives. Key Responsibilities • Assess new and existing technologies to develop and optimise manufacturing plans., • Maintain equipment functionality by performing basic maintenance and coordinating external servicing for major repairs., • Oversee maintenance records and troubleshoot production issues to minimise downtime., • Establish, implement, and sustain manufacturing processes for new products across their full life cycle., • Evaluate equipment and production methods with the goal of improving performance, efficiency, and reliability., • Create and validate automated machine programs., • Develop detailed process documentation and train production staff on updated procedures., • Provide advanced technical support to production teams to resolve complex issues., • Collaborate with Quality teams to analyse performance data, identify trends, and recommend corrective actions., • Use structured problem-solving techniques (e.g. root cause analysis) to address assembly and process issues., • Create and manage all manufacturing documentation in accordance with internal standards., • Perform additional related duties as required to support manufacturing operations. The Candidate Holds an engineering qualification Strong understanding of Design for Manufacture (DFM) principles. Knowledge of lean manufacturing and continuous improvement techniques. Ability to read and interpret technical drawings, electrical schematics, and assembly documentation. Experience using ERP/MRP systems in a production environment. Capable of working under pressure and meeting tight deadlines. Excellent communication skills, with the ability to collaborate across teams and departments. Strong organisational skills with the ability to prioritise multiple projects effectively. Familiarity with project management methodologies is advantageous. The Package Salary: From £40,000 per annum, depending on experience.

About Medly AI We're the fastest growing EdTech startup in London, on a mission to change education forever. We're living through a once-in-a-generation moment where AI-native companies are redefining entire industries - Cursor for code, Midjourney for image gen, Harvey for law. Medly is building a generational company for education. In just 4 months since launch, we've achieved retention rates that beat Duolingo and delivered personalized education to over 100,000 users. We're looking for ambitious talent to join our team. Backed by impact-focused VCs and supported by partners including UCL, Innovate UK, Microsoft, and Google, we're becoming the go-to AI education platform for all major exams worldwide. The Role We are looking for a passionate Senior Fullstack Engineer to join our growing team at Medly. This is a new role working closely with our hands-on Technical CEO and other Full Stack Engineers to architect and scale our platform as we grow rapidly. You will play a pivotal role in high-impact projects such as optimizing performance for hundreds of thousands of users, designing scalable system architecture, mentoring junior engineers, and making key technical decisions that shape our product. This is a high-impact opportunity for someone ready to take significant ownership, solve complex challenges at scale, and help power the next generation of educational technology. Role Responsibilities • Architect and build scalable features across our web app (Next.js) and mobile app (React Native), • Design and optimize our Python backend for high performance and reliability at scale, • Lead database architecture decisions and optimize Postgres for growing data volumes, • Own critical infrastructure on AWS, ensuring high availability and cost efficiency, • Drive technical decisions and establish best practices across the engineering team, • Mentor junior engineers and contribute to a culture of engineering excellence, • Collaborate closely with the CEO and other Full Stack Engineers on high-impact projects Technical Requirements • 3+ years of fullstack engineering experience in high-traffic production environments (100k+ users), • Strong proficiency with Next.js and modern React patterns, • Deep knowledge of Python and building performant backend services, • Advanced SQL skills and experience optimizing Postgres at scale, • Experience with AWS services (EC2, RDS, Lambda, S3, or similar), • Track record of building and maintaining systems that handle significant user load Ideal Candidate • Quality Focus: Obsessive attention to detail and commitment to shipping polished, bug-free experiences, • Collaborative Spirit: Ability to work closely with designers, product managers, and other developers, • Educational Interest: Passion for education and learning, though specific EdTech experience isn't required, • Startup Mindset: Thrives in fast-paced environments with rapid iteration and high impact, • Innovation Drive: Excited by the opportunity to build cutting-edge educational technology What We Offer • Competitive salary, • Opportunity to make a real impact on educational outcomes for students worldwide, • Collaborative, diverse team united by a powerful mission, • Fast-paced environment with significant growth and development opportunities, • Regular team events and a culture focused on innovation and impact, • Work on products used by tens of thousands of students daily, • Shape the future of AI-powered education

Halian is proud to partner with a leading medical device company based in London in their search for a Principal Systems Engineer. This is a pivotal role within the growing R&D team, driving both new product development and sustaining engineering for life-supporting technologies. As a Principal Systems Engineer, you’ll be at the forefront of shaping technical architecture, optimising engineering processes, and ensuring regulatory compliance across complex systems. This is a fantastic opportunity to make a tangible impact in a regulated, high-reliability environment. Key Responsibilities: • Lead the definition and execution of technology roadmaps aligned with long-term business goals., • Own system architecture and feasibility assessments for assigned products., • Translate stakeholder needs into robust system requirements and design documentation., • Drive engineering governance activities, including Critical Design Reviews (CDRs)., • Collaborate with V&V teams to support defect triage, issue resolution, and validation., • Monitor regulatory changes and ensure compliance with standards such as IEC 60601, IEC 62304, and ISO 14971., • Conduct risk management activities, including FMEA and hazard analysis., • Champion continuous improvement across engineering tools and processes. Required Experience & Qualifications: Essential: • Bachelor’s degree in biomedical, mechanical, electrical, or systems engineering (or equivalent)., • Strong background in high-reliability systems., • Deep understanding of ISO 14971 and IEC 62304 standards., • Proven experience in systems engineering disciplines: requirements, architecture, design, V&V, and release., • Familiarity with ISO/IEC/IEEE 15288 lifecycle within regulated product development., • Comfortable working in cross-functional teams and dynamic project environments. Desirable: • Experience in ISO 13485-compliant environments., • Knowledge of real-time control systems and embedded platforms., • Experience in IEC 60601-1, • Strong communication and collaboration skills across engineering, quality, and clinical teams.

About the Company A rapidly growing UK-based healthtech company is building smarter, tech-enabled solutions to improve health outcomes through personalised digital care. They are looking for a Senior React Native Engineer to join their team and take the lead on building out customer engagement and retention features across their mobile app. This includes everything from daily tracking and push notifications to weekly check-ins and in-app content delivery. This is a high-impact, product-facing role where you’ll work closely with cross-functional teams to deliver features that support users on their health journey and drive long-term engagement. Key Responsibilities • Develop and maintain key customer-facing features within the React Native mobile app, such as:, • Daily/weekly check-ins, • Progress tracking, • Messaging and support interfaces, • In-app content delivery, • Add-on purchase flows, • Translate behavior change models into simple, user-friendly mobile experiences, • Contribute to architectural decisions and codebase best practices, • Monitor performance and proactively resolve bugs, crashes, and UX challenges Required Skills & Experience • 4+ years in software engineering, with at least 2 years of hands-on React Native experience, • Strong proficiency in TypeScript, React Native, GraphQL, and Expo, • Experience deploying apps to the App Store and Google Play, with OTA updates, • Familiarity with CI/CD pipelines and integrating third-party SDKs, • Track record of building high-quality mobile UIs and user experiences, • Strong understanding of mobile testing (unit, integration, E2E) Retention & Product Skills • Experience working on products with an emphasis on user retention, engagement, or behavior change, • Knowledge of push notification strategies, in-app messaging, and customer lifecycle design, • Comfortable collaborating with cross-functional teams (Product, Marketing, Clinical, etc.), • Skilled in writing clear technical specs and documentation Preferred • Background in healthtech or consumer wellness apps, • Familiarity with tools like Braze, PostHog, Stripe, • Knowledge of privacy frameworks (e.g. GDPR), especially around notifications and tracking consent Please note applicants must be UK citizens or hold ILR to be considered for this opportunity

A rapidly expanding water technology company is seeking an MEP Engineer to join its Solutions team in London. This role is ideal for someone with strong building-services experience who enjoys client interaction, technical problem-solving, and contributing to innovative projects across the UK and Europe. Key Responsibilities: • Technical Design & Planning: Develop system designs, technical plans, and scopes for construction and real-estate projects., • Client Engagement: Deliver technical presentations, support customer consultations, and coordinate planned solutions., • Site Surveys: Conduct on-site engineering assessments to evaluate installation requirements and integration feasibility., • Project Coordination: Work closely with sales, product, customer success, operations, and project management teams throughout the project lifecycle., • Cross-Border Collaboration: Partner with global teams across different time zones. MUSTs: • B.Eng in Building Services Engineering, MEP Engineering, or Civil/Environmental Engineering (water systems focus)., • 4+ years of experience in MEP engineering, building services, or water-system design., • Strong knowledge of UK Building Regulations and British Standards (BS)., • Ability to work both remotely and from the London office., • CIBSE membership or working toward chartership., • Experience with plumbing systems and water-management engineering., • High technical aptitude and excellent communication skills., • Previous involvement in UK construction projects., • Proficiency with BIM tools (AutoCAD, Revit) and Bluebeam., • Opportunity to join a high-growth, innovative company., • Exposure to global projects and advanced technologies., • Collaborative, fast-paced work environment.

Hey! We're team Granola 👋 If you haven't already, you should check out ___, and ___. We're looking for an engineer to help us scale our systems and unlock Granola for the next 100x users. In this role, you will deep dive into scaling challenges, build secure and reliable infrastructure, and develop robust backend solutions that power exciting new features. In this role, you will: • Own the evolution and scaling of our backend infrastructure, • Design and implement performant APIs and services, • Build infrastructure to support cutting-edge AI capabilities, • Optimise database performance and query efficiency, • Continuously improve reliability and observability through enhanced monitoring and alerting, • Collaborate cross-functionally to ensure our infrastructure supports continuous product innovation Your background looks something like: • Engineering experience in tech and product-driven environments, • Strong proficiency in TypeScript and Node.js, • Hands-on experience with cloud infrastructure and infrastructure as code (we build on AWS using Terraform), • Deep knowledge of relational databases (we use PostgreSQL), • Familiarity with serverless architectures (we love lambdas!), • Solid understanding of security best practices and performance optimisation As a person, you… • Are first and foremost a builder, • Are excited to work in-person from our office in London (most of the time), • Love working in a startup environment (you either have experience working in a startup or are really drawn to the zero-to-one phase), • Value working with people who are kind, ambitious, and pragmatic, • Have an interest in infrastructure for AI/ML (direct experience is a bonus, but not required), • Thrive in a fast-paced environment with evolving requirements and shifting priorities About the opportunity We are living in the most exciting time for tool builders since ___ in 1968. We want to assemble the best crew to build this future together, here in London. Our compensation philosophy is to pay slightly above market on salary and above market on equity. We do our best work in person, and so our team spends time together five days per week in our new, bright, and spacious office at Old Street. We are happy to offer relocation assistance to candidates who'll be moving to London to join us. Lastly, we think amazing talent comes from all kinds of life journeys and experiences. If what is written above speaks to you, whether you look like a fit on paper or not, please reach out.