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ieso are on a mission to build and deliver clinically safe, evidence-driven AI that expands access to trusted mental health support and improves outcomes at scale. Our vision is to reshape the future of mental healthcare so people everywhere can feel better and live fuller lives and we need exceptional engineers to help us get there. The Role This is a high-ownership, high-impact engineering position at the heart of our digital mental health platform, a product that helps real users manage anxiety and depression every day. You'll work across the full stack: • Frontend: TypeScript & React What You'll Be Doing 🔧 Build & own full stack features - from TypeScript/React frontends to C#, Python, and TypeScript backends across .NET 8/10, FastAPI, and Node 🏗️ Take end-to-end ownership of product areas - architecture, implementation, deployment, monitoring, and iteration 🧭 Lead technical discussions - driving decisions on system design, code quality, and engineering best practices 🤝 Collaborate across disciplines - working closely with product managers, designers, and clinical stakeholders to turn requirements into robust, scalable software 👨 🏫 Mentor junior engineers - through code reviews, pair programming, and knowledge sharing 📈 Champion continuous improvement - raising the bar on quality, testing, and observability across the team ⚙️ Tackle technical debt and performance - identifying and resolving bottlenecks and reliability issues while balancing speed with long-term maintainability 🔄 Contribute to agile delivery - sprint planning, retrospectives, and roadmap discussions to keep the team moving with purpose 🔒 Uphold compliance and safety standards - ensuring all work meets the security and regulatory requirements of a US healthcare environment 🚀 Stay ahead of the curve - keeping current with emerging technologies and advocating for their adoption where they add real value You'll Thrive Here If You... ✅ Bring 7+ years of full stack experience with production-grade expertise in TypeScript & React on the frontend, and C#, Python, and/or TypeScript (across .NET, FastAPI, and/or Node) on the backend ✅ Have a proven track record of leading technical work setting direction, making smart trade-offs, and shipping results in fast-moving environments ✅ Hold a deep understanding of software architecture, RESTful APIs, cloud infrastructure, and modern CI/CD practices ✅ Lead with ownership you treat your work like a product, not a task ✅ Love mentoring others and raising the engineering bar ✅ Are energised by complex technical challenges with real-world consequences ✅ Embrace AI-assisted development tools (Copilot, Cursor, Claude Code) to move faster ✅ Can communicate clearly with both engineers and non-technical stakeholders Bonus Points For... ⭐ Experience with HIPAA or regulated healthcare software ⭐ Background in digital health or mission-driven consumer products ⭐ Familiarity with AI/ML integration in production systems ⭐ Knowledge of ISO 27001, ISO 9001, or SOC2 frameworks Why Join Us? We're not building another app. We're reshaping the future of mental healthcare and we hold ourselves to a standard that matches that ambition. You'll join a team that moves with purpose and speed, values engineering excellence, and genuinely cares about the people using what we build. If that sounds like the kind of place you want to do your best work, we'd love to hear from you. 📍 United Kingdom | 💻 Remote Apply now or share with someone who should. #MentalHealth #SoftwareEngineering #FullStack #TechForGood #Hiring #React #TypeScript #DotNet #Python #HealthTech

Full Stack Product Engineer - London (will need to relocate if not in London) We’re looking for a Full Stack Product Engineer to help build and scale a high-growth product in a fast-paced environment. This role is ideal for someone who enjoys working across the stack, shipping features quickly, and solving real user problems. Responsibilities • Build and own user-facing features end-to-end, • Develop new product capabilities (including AI-powered features), • Optimise application performance, scalability, and reliability, • Work closely with users to understand needs and deliver solutions, • Experience in product-focused engineering environments, • Strong skills in TypeScript, Node.js, and React, • Experience with modern frontend tooling (e.g. Tailwind or similar) is a plus, • Solid knowledge of relational databases (e.g. PostgreSQL), • You’re a hands-on builder who enjoys creating products from scratch, • Comfortable working in fast-paced, evolving environments, • Interested in startup or high-growth settings, • Collaborative, pragmatic, and user-focused, • London-based role with primarily in-office working, • Competitive salary + great list of benefits, • Relocation support available for candidates moving to London from within the UK

Full-Stack Engineer Location: London (Hybrid) Salary: Up to £80,000 + benefits We have partnered with a well-funded, founder-led technology startup operating in the sports and media space, building next-generation systems for processing and analysing live content in real time. As the platform scales, they’re hiring a Full-Stack Engineer to design and deliver high-performance systems across real-time data pipelines, modern frontend applications, and AI-enhanced product features. What You’ll Do as a Full-Stack Engineer: • Own the end-to-end delivery of real-time video, data, and AI-driven analysis across a modern digital content platform., • Design and build resilient backend services using Java and cloud-native infrastructure., • Develop modern, high-performance frontend applications using TypeScript and a modern JavaScript framework., • Architect and maintain real-time data pipelines using event-driven systems and streaming technologies., • Work across cloud-based serverless and containerised infrastructure to deploy scalable, production-ready systems., • Integrate LLM APIs and AI-powered workflows into product functionality and engineering processes., • Leverage AI coding assistants and modern development tooling to accelerate development and automate workflows., • Collaborate closely with a small, high-trust engineering team to ship features quickly and reliably., • Take ownership of system architecture, infrastructure decisions, and production deployments. Core Technology Stack: • Backend: Java, distributed messaging systems, relational databases, Docker, infrastructure as code, • Frontend: TypeScript, modern JavaScript frameworks, • Infrastructure: Cloud-native serverless and containerised environments, • AI Tooling: Regular use of AI-powered development tools and coding assistants What We’re Looking For in a Full-Stack Engineer: • A polyglot engineering mindset with the ability to work across multiple languages and systems., • Strong experience building backend services and distributed systems., • Ability to read, understand, and contribute to Java-based systems., • Frontend experience with modern frameworks such as React, Vue, Svelte, or similar technologies., • Hands-on experience integrating LLM APIs from leading providers., • Regular use of AI tools and coding assistants to increase development velocity and automate workflows., • Strong engineering fundamentals including testing, documentation, security, and performance optimisation., • Comfort working in fast-moving environments where ownership, clarity, and delivery are expected. Nice to Have’s as a Full-Stack Engineer: • Experience in sports technology, live event data systems, or digital media platforms., • Exposure to streaming technologies or real-time data processing frameworks., • Strong experience designing data architectures and large-scale distributed systems. This is a rare opportunity for a Full-Stack Engineer to help shape a real-time digital platform from an early stage, working with modern cloud infrastructure and AI-augmented engineering workflows to deliver high-impact systems.

Location: Cheltenham INTRODUCTION We are looking to hire a skilled Software Developer to join our dynamic and innovative team. As a Software Developer, you will be responsible for designing, implementing, and maintaining high-performance, scalable software solutions using Python and related technologies. You will collaborate closely with cross-functional teams to develop and deploy robust web applications, leveraging your expertise in Flask, MongoDB, HTML, CSS, Bootstrap, JavaScript, RESTful services, Docker, AWS, Jenkins, and Git. RESPONSIBILITIES • Design, develop, and maintain Python-based web applications using the Flask framework., • Implement efficient data storage solutions using MongoDB., • Create responsive and visually appealing user interfaces using HTML, CSS, and Bootstrap., • Enhance user experience through dynamic client-side scripting with JavaScript., • Develop and integrate RESTful services to support seamless communication between frontend and backend systems., • Containerise applications using Docker for streamlined deployment and scalability., • Deploy and manage applications on AWS cloud infrastructure., • Implement continuous integration and continuous deployment (CI/CD) pipelines using Jenkins., • Collaborate with cross-functional teams to understand requirements and translate them into technical solutions., • Ensure code quality, performance, and security through rigorous testing and code reviews., • Utilise version control systems, particularly Git, for managing the codebase and collaboration. EXPERIENCE / REQUIREMENTS • Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent work experience)., • Proven experience (1.5 years) as a Python Developer, with a focus on web development., • Proficiency in the Flask framework and MongoDB database design and management., • Strong understanding of web technologies including HTML, CSS, Bootstrap, and JavaScript., • Experience building and consuming RESTful APIs., • Familiarity with containerisation technologies such as Docker., • Hands-on experience with cloud platforms, particularly AWS., • Knowledge of CI/CD tools such as Jenkins for automated deployments., • Solid understanding of version control systems, particularly Git., • Excellent problem-solving and analytical skills., • Strong communication and collaboration abilities. ADDITIONAL REQUIREMENTS • Occasional UK travel may be required to attend team or customer meetings, events, and training activities., • Flexible working arrangements are available; however, there is value placed on teams being co-located in offices. Applicants are encouraged to discuss what may be possible during the application stage.

We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms. Build and enhance customer facing portals including dashboards, mapping functionality, role based access control and IoT integrations. Develop, maintain and optimise RESTful and GraphQL APIs to support internal systems and third party services. Support the adoption and continuous improvement of DevOps practices including CI and CD pipelines, monitoring and automated deployments. Provide technical guidance to junior developers through code reviews, mentoring and day to day collaboration. Contribute to technical improvements and the ongoing evolution of the existing platform. Work closely with stakeholders across the business to ensure software solutions align with operational and commercial requirements. Maintain clear and accurate technical documentation and contribute to continuous improvement initiatives. Skills and Experience Required Proven experience as a Fullstack Developer with strong capability across backend development using .NET and C#. Experience with frontend development using ReactJS. Experience working with cloud platforms, with Azure strongly preferred. Strong background designing and consuming RESTful and GraphQL APIs. Good understanding of data modelling and experience working with SQL, NoSQL or similar database technologies. Demonstrable experience working with DevOps pipelines, CI and CD processes and automated testing. Solid understanding of secure coding practices, authentication methods such as OAuth2, and role based access control. Strong analytical and problem solving skills with the ability to work independently on complex tasks. Confident communicator able to work effectively with both technical and non technical stakeholders. Degree in Computer Science or equivalent practical experience is desirable. Exposure to React Native, Terraform or IoT technologies such as MQTT, Modbus TCP IP or Azure IoT Hub would be advantageous. Summary Position: Fullstack Developer Location: Chandlers Ford Duration: Permanent Salary: £55,000 to £65,000 plus bonus and benefits Start: Notice dependent This is a strong opportunity for an experienced Fullstack Developer to take on a meaningful role within a growing engineering led organisation, working on modern platforms with real world operational impact. Apply now or contact the Kiota team for more details

Influence frontend standards, performance and structure. We’re looking for a frontend developer with 2–4 years’ commercial experience to join our ecommerce delivery team. You won’t be expected to operate in isolation, but you should be comfortable delivering high-quality frontend work with c

Zuma Labs is a disruptive technology startup building force multipliers for systemic industries.Our first two products, Venetian and Squawk, target the over-the-counter (OTC) trading markets.We work closely with our customers and count a large publicly traded brokerage among our partners.Trading tec

Drive technical design and architectural decisions for the frontend, ensuring scalability, maintainability, and security. The purpose of this role is to solve complex business problems and technical challenges through the design and development of frontend applications.

Integrating frontend systems with. Continuously improving frontend performance and usability. UX detail and frontend quality.

Senior UI/UX Front-End Engineer.I'm partnering with a profitable engineering software company in the energy sector that is helping hundreds of Global Energy companies make complex engineering and operational decisions.They are currently undertaking a major modernisation, transitioning their long-sta

Whitehall Resources are looking for a Frontend Engineer. This role will be for a Frontend Software Engineer who is experienced in their field. The individual will be working within a single team assisting with the creation of new frontend products.

A global consultancy is seeking talented Frontend Engineers to join their digital team. As a Frontend Engineer, you will be instrumental in developing cloud-native platforms and modern web applications.

Frontend Developer: £35 to £40k.

Java Full Stack Developer (Frontend Focus)- Farnborough, UK - Fulltime Hybrid - LondonReference Code: 397008-en_GBContract Type: PermanentProfessional Communities: Software EngineeringJob Title: Java Full Stack Developer (Frontend Focus)Hybrid: 2 -3 days a week working from the office Location: F

Lead the frontend development of product features, ensuring engineering decisions factor in technical debt, systems design, stability/reliability, monitoring/observability, and business need.

Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere.Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late f

You will define how the frontend is structured, how products feel to use, and how the team approaches building user-facing features.

A leading technology consultancy in Greater London is seeking a Front-End Developer to collaborate with Product Owners and UX/UI Designers on digital solutions.The ideal candidate will have extensive experience with TypeScript and React, as well as knowledge of trends in front-end development.This p

Senior Frontend Engineer Job Description. As a member of the Frontend Platform team at Snyk, you'll be at the forefront of building the future of application security. At least 5 years of commercial experience as a Software Engineer, some of those focused on large-scale Frontend development involvin

A leading technology company in the United Kingdom seeks a Senior iOS Frontend Engineer to design, develop, and enhance software solutions.

A leading energy company is seeking a Frontend Engineering Manager to lead a talented team, shaping the future of digital energy experiences.

A legal technology company in Greater London is seeking a Senior Engineer to design and build sophisticated React applications while collaborating with cross-functional teams.You will play a crucial role in guiding best practices and mentoring team members.Ideal candidates have over 4 years of exper

You will have significant influence on frontend architecture and product decisions, working closely with cross-functional teams.

Experience with cloud platforms, especially Microsoft Azure, for frontend hosting and deployment. As a Senior Software Engineer, Frontend, you’ll design, develop, and lead the delivery of complex user-facing applications across the Walr Platform. You’ll set technical standards for frontend engin

A high-growth tech company in London is seeking multiple Frontend Engineers, including 2 Senior Engineers and 1 Staff Engineer.

A cybersecurity platform based in Greater London is seeking a Senior Frontend Engineer to take ownership of the UI layer. The ideal candidate will have deep expertise in frontend architecture and a passion for design, along with experience in building data-heavy applications.

Senior x2 | Staff x1 | Remote-first | 1 day/week Central London).A high-growth, Series-funded tech company is quietly building some of the most complex, high-stakes infrastructure in the cybersecurity space.Millions of transactions flow through their platform daily.The problems are genuinely hard.Wh

A dynamic consumer brand is looking for a Storefront Engineer to lead the development of their Shopify storefront.This role involves collaborating with the Growth team on features, conducting conversion rate optimization experiments, and continuously improving storefront performance.The ideal candid

Partner with Enterprise Architecture to evolve a scalable, secure, reusable frontend platform and APIs that support multi‑channel distribution and real‑time conversational needs. While your primary focus is frontend, you’ll frequently pair with backend and data/ML engineers to ship end‑to‑

A recruitment agency is seeking a talented Senior Frontend Developer with expertise in React.

Over your first 12 months, you’ll go from shipping small but meaningful changes to having a significant contribution to frontend delivery on key initiatives that contribute to our growth goals. Along the way, you’ll develop strong relationships across disciplines and grow your technical depth in

A leading property technology firm in London is seeking a Senior Software Engineer to join their team in a hybrid work model.You will be responsible for delivering high-quality software, collaborating across functional teams, and mentoring junior engineers.The ideal candidate has strong experience i

Hi, I’m Jon Frost, Principal Frontend Engineer at Hawk‑Eye Innovations and the lead for our Frontend Engineering discipline. We’re looking for a Frontend Engineer to join our Engineering Team / Department, where we build data‑rich, interactive UI platforms used across the world of sport –

This opportunity is designed for experienced frontend engineers who want strong product ownership, startup-level influence, and the chance to shape a rapidly evolving platform from the ground up. As a Senior Frontend Engineer, you will lead the design and development of the company’s core product,

A global technology firm is seeking a Java Full Stack Developer with a frontend focus. This role involves leading the design, development, and deployment of scalable solutions using Core Java, Spring Boot, and modern frontend technologies like React and Angular.

A leading restaurant chain is seeking a Senior Software Engineer specializing in UI to enhance their design system.The ideal candidate will be proficient in React and TypeScript, skilled in developing maintainable UI components, and passionate about mentoring.You'll work closely with designers and e

The ideal candidate will have strong experience in frontend development and a proactive, team-focused mindset.

Partner with Enterprise Architecture to evolve a scalable, secure, reusable frontend platform and APIs that support multi‑channel distribution and real‑time conversational needs. While your primary focus is frontend, you'll frequently pair with backend and data/ML engineers to ship end‑to‑en

We’re looking for a sharp Frontend Developer who is an expert in Angular but isn't tethered to it. You’ll have the freedom to influence our frontend architecture and deliver meaningful features.

A fast-growing AI startup in London is seeking a Senior-Level Full Stack Engineer with a frontend focus.

Lead a high-impact frontend team building and evolving the core Marketing Email and SMS management experiences (dashboards, creation flows, send/review UIs, experimentation and related onboarding surfaces). Champion reliability and service maturity for our frontend applications. Help define and upho

A leading tech startup in Greater London is seeking a Senior Frontend Engineer to build and improve web and mobile applications.

You will lead frontend development with a focus on React and TypeScript, participate in AI initiatives, and mentor developers.

A leading aviation solutions provider in the United Kingdom is seeking a Senior Software Engineer to contribute to the design and development of robust backend and frontend systems.

We're looking for a Frontend Engineer to join our team, building the interfaces behind our core products and ecosystem. Build and maintain frontend features and components across Nexus Mods' web and desktop experiences. Integrate frontend applications with backend APIs and help share efficient data

A health technology firm is seeking a Senior Frontend Engineer to build secure, intuitive user interfaces for their AI system. This role requires 10+ years of experience with React and Typescript, along with strong frontend architecture skills and experience in regulated environments.

Join Dojo as a Senior Frontend Engineer to help reinvent payments and build innovative customer‑facing apps for a diverse portfolio of solutions, from payment device management to restaurant operations. Deep understanding of modern frontend architecture (state management, component patterns, hooks