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Technical Lead – Ruby on Rails - London (Hybrid) | Full-Time FRESH has partnered with a fast-growing B2B SaaS company building a next-generation data platform that delivers real-time insights to support passengers requiring assistance while travelling. They are now hiring a Tech Lead to strengthen the core backend of their Passenger Assistance platform, helping scale customer onboardings faster and reduce backend bottlenecks in feature delivery. This role is an excellent opportunity for someone looking to take the next step into a technical leadership position while remaining hands-on with engineering. Responsibilities: • Own technical direction and architecture decisions within the Rails application, • Design, build, and maintain scalable backend services and RESTful APIs, • Optimise background job processing using Sidekiq, • Help improve onboarding scalability and reduce backend delivery bottlenecks, • Identify technical risks early and balance trade-offs between speed, quality, and scope, • Collaborate within a cross-functional product squad, • Support and mentor engineers through technical leadership and problem-solving Key Requirements: • Strong commercial experience with Ruby on Rails in production environments, • Solid understanding of Rails monolith architecture and full-stack troubleshooting, • Experience building and maintaining RESTful APIs, • Strong knowledge of PostgreSQL, Redis, and Sidekiq, • Comfortable working with AWS infrastructure, • Experience using Docker in development or production environments This is a fantastic opportunity to join a purpose-driven technology business making a genuine impact, while taking a meaningful step into technical leadership within a collaborative and high-growth environment.

If you are interested in this or other Geoenvironmental opportunities, please contact Ruby Evans at Penguin Recruitment.

Kitman Labs is a global human performance company, disrupting and transforming the way the sports industry uses data to increase the performance of the world's top athletes. Driven by a passion to innovate in the areas of sports performance, analytics and user experience, we have assembled a team of the industry’s top data scientists, sports performance scientists, product specialists and engineers. The company received recognition by Fast Company in 2019 as one of the most innovative companies in the world. Kitman Labs’ advanced Outcome-driven Analytics and Performance Intelligence Platform are used by over 700 teams in 50 leagues on 6 continents spanning soccer, rugby, American football, baseball and ice hockey. The Role Backend engineers are responsible for building the core data-flows of Kitman Labs products. They do this with a focus on security, privacy, robustness and performance. The backend engineering team build APIs and data processing pipelines that handle massive amounts of data from sports teams all over the globe. In conjunction with our Data Science team they build and maintain data models which embodies the cutting edge of injury risk prevention technology. We’re looking for people with a strong background or interest in building successful products. You’ll be happy dealing with systems that involve many moving pieces. New technologies or approaches to solving problems don’t bother you. You are detail oriented but also pragmatic and considered in where you spend time and effort. \n We will expect you to • Design, build, and maintain APIs, services and data-stores., • Constantly improve our engineering processes, standards and tooling., • Work with our frontend engineers to build features that users love to use., • Help our data scientists to research and implement the latest data processing techniques and models., • Debug production issues across services and multiple levels of the stack., • Contribute to our technical architecture as we grow. Experience and skills we look for • Experience building APIs or as part of a team building dynamic web applications., • Shown an ability to take on new technologies and languages., • We work mostly in Ruby but this isn’t a prerequisite, we’re more interested in your ability to learn., • Hold yourself and others to a high bar., • Take pride in working on projects through to a successful completion., • Recognise the value of standardised, fully tested code that is delivered in a CI/CD environment. \n We heavily utilise Amazon Web Services so experience with AWS or similar is a bonus. Our platforms are orchestrated using Terraform and some familiarity with infrastructure as code as a pattern is an advantage. Benefits At Kitman Labs we pride ourselves on being the best and working with the best, so it should be no surprise that we are also dedicated to keeping the best through building a world-class work culture. We truly believe that a successful company begins through having an outstanding and inspiring culture, so our benefits reflect this: • Competitive salary, • Health insurance for employee & dependants, • Meaningful equity, • Pension Plan, • Life Cover, • Income protection, • Wellbeing benefits Location While this role allows for remote work, occasional face-to-face-gatherings are recommended. Diversity In addition to building a team with diverse skill-sets, Kitman Labs is committed to hiring people with diverse backgrounds. We do not discriminate based on age, civil or family status, disability, ethnicity, gender, race, religion, or sexual orientation. If you are a person with a disability and require assistance during the application process, please let us know. You can find information about how we process, share and keep your personal data safe by reading our _

About MILE MILE is the new members-only shopping destination redefining luxury commerce. We offer access to a curated, seasonless catalogue of the most sought-after products from globally renowned fashion houses—all at unmatched prices. Built at the intersection of technology and fashion, MILE delivers a seamless, elevated experience for both consumers and brands. Our mission is to become the leading digital destination for luxury—where exclusivity, value, and exceptional design converge. What We’re Looking For We're looking for a Senior Backend Engineer to join our growing engineering team. As an early technical hire, you’ll play a foundational role in shaping the systems that power our luxury commerce platform, from our membership model to product discovery, order management, and logistics. This is a high-impact role for someone who thrives in fast-paced, product-focused environments and wants to help build a company from the ground up. What You’ll Do • Design and implement scalable, high-performance backend systems to power our e-commerce experience., • Build and maintain APIs that support our frontend, mobile, and third-party integrations., • Architect systems for membership access, catalog management, checkout, order fulfillment, and payments., • Collaborate cross-functionally with product, design, and data teams to deliver features that elevate the user experience., • Own backend services end-to-end, from design to deployment and monitoring., • Contribute to best practices in code quality, testing, reliability, and observability., • Help define our backend architecture and make strategic technical decisions as we scale., • Mentor junior engineers and foster a culture of technical excellence and collaboration. Who You Are • 7+ years of experience building and scaling backend systems in production environments., • Genuine Rubyist having written custom DSLs and/or contributed to a major Ruby gem with the deepest knowledge of how to utilize Ruby’s metaprogramming capabilities for maximal terse and DSL-centric applications., • Experience with the specific challenges of concurrency, inventory management/reservation, currency/price management, and third party API integration system designs - push, pull, effective normalization, etc., • High familiarity with excellent microservices software design - using software DSLs over cloud deployed solutions - across dozens of models, concerns, and integrations., • Experience with relational databases (e.g., PostgreSQL) and familiarity with data modeling and performance optimization., • Familiarity with cloud infrastructure (e.g., AWS) and containerization (Docker, Kubernetes)., • Experience developing and deploying GraphQL and RESTful API interfaces., • Experience developing multi tenant systems, relating to concerns of access control, reporting, and authorization/authentication., • Strong understanding of system design, data structures, and algorithmic principles., • Comfortable working in high-growth, early-stage environments—bias toward action and strong product sense are key., • A collaborative teammate who communicates clearly and is excited to shape the future of a luxury tech brand. Bonus Points • Prior experience in e-commerce, marketplaces, or membership-based platforms., • Familiarity with event-driven architectures and message queues (Kafka, SQS, etc)., • Experience working closely with design or product teams in consumer-facing companies., • Passion for fashion, luxury, or retail innovation. Why Join MILE • Opportunity to play a key role in shaping the future of the company., • Collaborative and innovative work environment., • Career growth opportunities in a fast-growing organisation. Let’s build something people talk about. Together.

To care wildly for our customers, firstly we care wildly for our teams. The E-commerce team makes up a large proportion of the nearly 60 strong Technology team, which in itself forms a large part of the overall Bloom & Wild team of over 400 people. E-commerce Team at Bloom & Wild.

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About the company and the project:.Middle Ruby on Rails Developer .Their platform helps educational institutions manage and distribute digital learning materials — from e-textbooks to interactive courseware.Their solutions are used by thousands of schools and universities, helping students save o

Who we are: We are a leader in fraud prevention and AML compliance. Our platform uses device intelligence, behavior biometrics, machine learning, and AI to stop fraud before it happens. Today, over 300 banks, retailers, and fintechs worldwide use Sardine to stop identity fraud, payment fraud, account takeovers, and social engineering scams. We have raised $145M from world-class investors, including Andreessen Horowitz, Activant, Visa, Experian, FIS, and Google Ventures. Our culture: We have hubs in the Bay Area, NYC, Austin, and Toronto. However, we maintain a remote-first work culture. #WorkFromAnywhere We hire talented, self-motivated individuals with extreme ownership and high growth orientation. We value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule. Location: Remote; based in UK or EU About the role We’re looking for an Integration Engineer to lead client onboarding for Sardine’s fraud and compliance products. You’ll manage end-to-end integrations, translate technical requirements into solutions, and ensure a smooth, successful deployment. This is a hands-on role working closely with clients and internal teams, perfect for someone who thrives in fast-paced environments and enjoys solving complex problems with practical, scalable solutions. What you’ll be doing Lead implementation and integration efforts for fraud and compliance products Work closely with clients and provide end-to-end support during their onboarding process, setting our clients up for success Own public-facing SDKs, APIs, integration guides, and support documents Analyze clients' requirements from the technical and functional perspectives and design solutions by having a deep understanding of our system and products' capabilities Manage implementation projects, including monitoring project quality, managing timelines, mitigating risk, and driving deliverables Build a deep understanding of customers' business problems, technical requirements, and success criteria so that you can provide solutions utilizing Sardine's technology Provide product feedback to internal stakeholders as the eyes and ears on the ground What you’ll need 3+ years of hands-on experience as an implementation manager, integrations engineer, technical account manager, solution architect, and systems analyst, working with multiple technical teams, both internal and external 1+ years of B2B SaaS experience, preferably working in the relevant domain (payment, fraud, risk, or compliance) Excellent written and verbal communication skills, including the ability to communicate complex technical and business concepts to technical and non-technical personas Excellent organizational skills and the ability to manage multiple projects simultaneously and drive deliverables to completion Experience with basic SQL querying and JSON payload analysis Experience with APIs specs like OpenAPI, web development, and writing scripts to build internal tools (e.g., bash scripting, Python, SQL, Ruby, Golang, Postman) Compensation: Base pay range of 35,000 - 45,000 GBP in UK; 40,000 - 50,000 Euro in EU + Series C equity with tremendous upside potential + Attractive benefits The compensation offered for this role will depend on various factors, including the candidate's location, qualifications, work history, and interview performance, and may differ from the stated range. Benefits we offer: Generous compensation in cash and equity Early exercise for all options, including pre-vested Work from anywhere: Remote-first Culture Flexible paid time off, Year-end break, Self care days off Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific 4% matching in 401k / RRSP - US and Canada specific MacBook Pro delivered to your door One-time stipend to set up a home office — desk, chair, screen, etc. Monthly meal stipend Monthly social meet-up stipend Annual health and wellness stipend Annual Learning stipend Unlimited access to an expert financial advisory Join a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you. To learn more about how we process your personal information and your rights in regards to your personal information as an applicant and Sardine employee, please visit our _.

At RemoteStar, we're currently hiring for one of our clients based in Houston, TX. Years of experience: 3 to 5 years Location: USA About Client: A fast-growing US-based SaaS company is transforming how energy firms manage operations. Their end-to-end ERP platform streamlines field data, production, finance, land, and compliance, delivering real-time insights and operational efficiency. With a strong client base and innovative tech, they’re redefining digital transformation in the energy and utilities sector. You’ll design and implement AI-driven functionality that improves automation and user experience. This includes leveraging LLMs, machine learning models, and modern AI tooling within a production SaaS environment. This is a hands-on role for someone who can move quickly, make pragmatic decisions, and bring AI concepts into real, scalable product features. Responsibilities • Design and implement AI-powered features within the platform (e.g., automation, recommendations, copilots) • Integrate LLMs and/or ML models into existing services and workflows, • Evaluate, select, and optimize AI tools, APIs, and frameworks for production use, • Collaborate with Product to translate business problems into AI-driven solutions, • Build and maintain scalable backend services to support AI functionality, • Profile, test, and optimize performance of AI-integrated systems, • Ensure reliability, security, and cost-efficiency of AI components in production, • Contribute to architecture decisions around AI integration and system design, • Partner with engineering teams to embed AI into existing applications without degrading stability Requirements • 3+ years of experience as a software engineer in a SaaS or cloud-based environment, • Strong backend engineering experience (RoR and/or Golang preferred), • Experience integrating APIs and working within distributed systems, • Hands-on experience with AI/ML tools (e.g., OpenAI, Anthropic, Hugging Face, or similar), • Experience building or integrating AI-powered features into applications (not just experimentation) • Strong understanding of data flow, system design, and performance optimization, • Experience with relational databases (SQL Server or similar), • Familiarity with microservices architecture, Kubernetes, and CI/CD pipelines, • Experience deploying applications in Azure or similar cloud environments, • Strong problem-solving skills with ability to work in ambiguous, fast-moving environments, • Builder mindset—someone who can take an idea and turn it into a working feature quickly, • Pragmatic approach to AI (focus on value, not hype), • Ability to work independently in a contract environment while collaborating closely with internal teams • Strong communication skills and ability to explain AI concepts to non-technical stakeholders Preferred • Experience with prompt engineering, embeddings, or retrieval-augmented generation (RAG) • Exposure to model evaluation, fine-tuning, or AI performance monitoring, • Experience with event-driven architectures or real-time data processing, • Background in energy, fintech, or other complex data-driven industries

Our freelance role is fully remote so, you just need a laptop, internet connection, time available and enthusiasm to take on a challenge. Why this freelance opportunity might be a great fit for you?. Take part in a part-time, remote, freelance project that fits around your primary professional or ac

Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments. Our freelance role is fully remote so, you just need a laptop, internet connection, time available and enthusiasm to take on a challenge. Why this freelance opportunity might be a

Bitfinex is a digital asset trading platform offering state-of-the-art services for digital currency traders and global liquidity providers. Founded in 2012, Bitfinex was one of the first professional platforms set up to accommodate for the booming interest in cryptocurrency trading. Since then, our team has gained invaluable experience whilst cementing our spot as the go-to platform for digital asset traders and institutions. Our Mission Our aim is to create a free and accessible global digital economy by disrupting the current financial services industry. Our team is entirely remote, composed of individuals with an ownership mentality; no one waits to be told what to do. Each member of the team is a highly motivated self-starter that is comfortable with autonomy and believes in lifelong learning. When we’re not working, we’re dreaming about it. We place our egos aside and thrive within a culture that fosters one another from the birth of a concept to launch of a product. At Bitfinex you have the freedom to work as you please - all that matters is execution. Join us and help lay the foundation for a decentralized future. Currently looking for: Senior Backend Developer [Remote] Key responsibilities As a senior Backend Developer, you will be a part of the team that works on the development of the backend components of all Bitfinex Services (main trading application, Bitfinex Pay, Lightning Network support, Blockchain integrations, ….). This includes: New Products and Features - Bitfinex continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry. Scalability - all backend services that power Bitfinex platform must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. A good example are the renown Bitfinex API, the most solid, low-latency and complete in our industry. Security - Bitfinex makes Security its most important feature. The Backend Development team is responsible for building all the API services and backend processes with the highest security principles and standard, in order to protect the safety of the entire user base. • 6+ Years of Node/JavaScript experience Familiar with microservices architecture Have actively participated in the development of a complex platform Good experience in interacting with databases (MySQL, MongoDB) Ability to quickly learn new technologies Good understanding of security practices Nice to have Experience with blockchain integration Comfortable with high-availability concepts Ruby, Rust or C++ skills are a plus Other technologies of interest: Message queues (Redis), Caches and Job Queues

Senior Full Stack Ruby on Rails Developer (Remote - UK Based). I am hiring a Senior Full Stack Developer with strong Ruby on Rails experience to join a remote-first, innovation-driven tech company. Develop and maintain full-stack web applications using Ruby on Rails and TypeScript.

At Beam, you get to do work that matters for the world. We’re solving the world's toughest social problems with an incredible team, tech and AI. And we’re growing fast 🚀 It’s not easy. Nothing worth doing ever is. Join a company at the forefront of social impact, driving first-of-its-kind positive change. You’ll be part of a high-performance culture where you'll make a huge impact, rapidly progress your career, and truly enjoy your work. From top-tier coaching and personal development budgets to competitive salaries, we take care of everyone who works at Beam. We’ve already seen incredible growth from our Magic Notes product, helping case workers save over 8 hours of admin per week. From social workers and NHS clinicians to mental health practitioners and safeguarding specialists, over 50,000 frontline workers across the UK are now using Magic Notes regularly to deliver faster, more human-centred support. We’re also launching globally, helping practitioners across the USA, EU, and Australia make a difference. The opportunity at Beam We’re looking for Senior (and above) software engineers with a product-mindset to join our product teams to help build the future of Beam with the right technologies. It’s a passionate and growing team (doubled in size in 2024) and values autonomy, empowerment and bias-to-action. We want engineers who want to take responsibility for the product they are building and take part in every part of the product creation. We’re solving some hard problems that aren’t just technical, and value people who want to solve them with us. What you’ll be doing Help build our technology for the future - be it infrastructure or front-end. We value generalists Work with product, design, commercial and analytics to figure out what new features to build within our product Building internal tools - for our team to help as many people as efficiently as possible Using the latest generative AI tooling to empower our caseworkers to focus on what matters, helping those in need Get deep into the power of the LLMs that exist and figure out ideal optimisations across our systems with them Why is this exciting? Our MagicNotes product is already used by thousands of case workers per day - you will have an opportunity to figure out the future of it or you’ll be designing and defining the future of our BeamForce product You will have a high degree of autonomy working with other exceptional and like minded engineers and product people You will see your features used by people who really need them - and see the amazing 5-star feedback we get in return for building these critical features Who we’re looking for Breadth of experience across infrastructure, backend and frontend technology stacks: We use the latest Ruby on Rails, Turbo, Phlex, AlpineJS, TailwindCSS, AWS, PostgresSQL to name a few technologies OpenAI & Claude for LLM interfacing We are not wedded to them and will rapidly evolve over the next 3-6 months with the right technologies Has worked in complex software systems - both front-end and back-end and understands the importance of good data structures, a scalable architecture and constantly evolving tech stack You care about the “right tool for the right job” and pick the pragmatic options when building software Enjoys working in cross functional teams - PMs, UX, Designers and Data You have a product mindset: you care about customer outcomes and you want to make data-informed decisions You have an entrepreneurial, get-things-done attitude You'll contribute to fostering a culture of psychological safety, inclusivity, collaboration and continuous improvement within the team through participation in retrospectives and feedback You're passionate about social mobility We're committed to advancing equity, diversity, and inclusion through our work as an organisation, and that starts with the team we build. 53% of the people we support are from ethnic minority backgrounds and 17% have disabilities. We believe we serve these people best when we’re a diverse and inclusive team. To that end, we particularly welcome applications from ethnic minority candidates and/or those who’ve experienced social disadvantage. Application process We take hiring seriously. We have a 4-stage and an optional 5th interview process, giving you plenty of time to learn about Beam while we get to know you. 30 mins with our Talent team 45 minute Interview with Ben, our VP Engineering 1 hour technical test with two of our Senior Engineers 1 hour systems design interview with two of our Senior Engineers 30 minute product and cultural interview with one of our founders Our team of 200+ embraces a hybrid working approach, enjoying 2-3 days of vibrant collaboration in our beautiful Shoreditch co-working space, fully equipped with rooftop views, an onsite barista and kitted out gym. We’ve picked up an armful of for our work, including one from our former Queen. We've also been named by WIRED as one of London's and by LinkedIn as a . Meanwhile, we've been covered in the media literally thousands of times, including the likes of . We’re also proud to be backed by some of the world's leading tech investors and entrepreneurs, including the founders of _, Calm, Shazam and Dropbox. Generous _ share options Access to therapy, coaching, classes & content - powered by _ Your own financial well-being coach, through Bippit Generous Holiday - 25 days with 3 additional days over the Christmas period + bank holidays Work remotely up to 6 weeks a year Eligible for a 6-week sabbatical after 3 years in service Nursery scheme through Gogeta Healthcare cover through Benenden Health Enhanced parental leave: Primary Caregiver leave 18 weeks and Secondary Caregiver leave 4 weeks £200 WellBeam budget for activities enhancing wellbeing and professional development Annual membership to Shoreditch Exchange gym (London office only) Pension scheme where we contribute 3% of your salary and you contribute 5%. Free subscription to the Calm meditation app Discounted bike and accessories with Cyclescheme, and tech products with Techscheme Start your journey to a more impactful career today. We're excited to hear from you. Reasonable adjustments: Beam is committed to fostering an inclusive, diverse, and supportive work environment for all employees. This policy extends to our hiring practices. We recognise that some candidates may need additional support during their hiring process to give them the best chance of being a success. To ensure that all candidates have an equitable opportunity during their process, we are committed to providing reasonable adjustments where required. If you require a reasonable adjustment to be made during your process, please let your Talent Partner know. We encourage you to share this information, but there is no obligation to do so. Please be reassured that any reasonable adjustment requests will not be taken into account when making a decision about your candidacy.

Kitman Labs is a global human performance company, disrupting and transforming the way the sports industry uses data to increase the performance of the world's top athletes. Driven by a passion to innovate in the areas of sports performance, analytics and user experience, we have assembled a team of the industry’s top data scientists, sports performance scientists, product specialists and engineers. The company received recognition by Fast Company in 2019 as one of the most innovative companies in the world. Kitman Labs’ advanced Outcome-driven Analytics and Performance Intelligence Platform are used by over 700 teams in 50 leagues on 6 continents spanning soccer, rugby, American football, baseball and ice hockey. The Role Senior Backend Engineers are responsible for building the core data-flows of Kitman Labs products. They do this with a focus on security, privacy, robustness and performance. The backend engineering team builds APIs and data processing pipelines that handle massive amounts of data from sports teams all over the globe. In conjunction with our Data Science team they build and maintain data models which embody the cutting edge of injury risk prevention technology. We’re looking for people with a strong background or interest in building successful products. You’ll be happy dealing with systems that involve many moving pieces. New technologies or approaches to solving problems don’t bother you. You are detail oriented but also pragmatic and considered in where you spend time and effort. \n We will expect you to • Design, build, and maintain APIs, services and data-stores., • Possess a deep understanding of what it takes to maintain high standards of software quality, including effective QA processes, writing high-quality code, following best practices, and adhering to established industry standards. Ensure cross team collaboration by working with our frontend engineers to build features that users love to use., • Work with our product team to reliably spec out and refine user stories, enabling them to be broken down and quickly delivered to production., • Confidently debug complex production issues across services and multiple levels of the stack., • Be focussed and able to prioritise tasks and not get distracted by unimportant details., • Set direction from a technical architecture point of view on projects and make, • pragmatic decisions if projects need to be redirected or scaled back. Experience and skills we look for • Experience building APIs or as part of a team building dynamic web applications., • Have shown an ability to take on new technologies and languages., • We work mostly in Ruby but this isn’t a prerequisite, we’re more interested in your ability to learn., • Hold yourself and others to a high bar., • Take pride in working on projects through to a successful completion., • Recognise the value of standardised, fully tested code that is delivered in a CI/CD environment. Additional skills that would be beneficial • We heavily utilise Amazon Web Services so experience with AWS or similar is a bonus., • Experience working with AI tools., • Knowledge of machine learning models. \n Benefits At Kitman Labs we pride ourselves on being the best and working with the best, so it should be no surprise that we are also dedicated to keeping the best through building a world-class work culture. We truly believe that a successful company begins through having an outstanding and inspiring culture, so our benefits reflect this: • Competitive salary, • Health insurance for employee & dependants, • Meaningful equity, • Pension Plan, • Life Cover, • Income protection, • Wellbeing benefits Location While this role allows for remote work, occasional face-to-face-gatherings are recommended. Diversity In addition to building a team with diverse skill-sets, Kitman Labs is committed to hiring people with diverse backgrounds. We do not discriminate based on age, civil or family status, disability, ethnicity, gender, race, religion, or sexual orientation. If you are a person with a disability and require assistance during the application process, please let us know. You can find information about how we process, share and keep your personal data safe by reading our _

Hiring: Senior Ruby on Rails Developer (Remote - UK Based).

To care wildly for our customers, first we care wildly for our teams. Bloom & Wild is re-inventing the $60B global flower industry. We are home to a family of 3 strong brands, Bloom & Wild, bloomon and Bergamotte, having acquired bloomon in April 2021 and Bergamotte in July 2021.

This is a free 16 week training course followed by the potential for a role with one of our clients. Solutions Architect Remote, UK Step into a role as a Solutions Architect with one of our client partners through the Mid-Level Accelerator programme. We are seeking a Solutions Architect to join a high-impact digital transformation project within the public sector. This is a remote‑first role requiring candidates to be SC eligible for security clearance. You will operate at a strategic level, defining architectural roadmaps for a complex digital ecosystem while ensuring delivery teams adhere to core technical principles. • Collaboratively define and maintain the long‑term architectural roadmap for digital systems, • Maintain a holistic view of the service ecosystem to identify technical dependencies, risks, and opportunities, • Represent architecture in governance forums, supporting prioritisation, risk discussions, and assurance reviews, • Contribute to the development of architectural patterns, principles, and standards to ensure directorate‑wide consistency, • Create high‑quality architectural artefacts, including C4/UML diagrams, data flows, and migration pathways, • Provide expert oversight to ensure services are robust, secure, scalable, and maintainable, • Evaluate technology options, assessing impacts across infrastructure, data, security, and operations, • Mentor and coach tech leads and senior engineers to support capability development, • Translate complex architectural concepts into clear terms for senior stakeholders, • Facilitate alignment between technical and business leaders to balance strategic direction with delivery needs, • Champion inclusive working practices and support diversity within engineering roles, • Architectural Expertise: Significant experience as a technical or solution architect in complex enterprise environments, • Engineering Foundation: Strong background in modern application architectures, including microservices, APIs, and distributed systems, • Cloud & Infrastructure: Hands‑on experience with at least one major cloud provider (ideally AWS), including Infrastructure as Code (IaC) and security control, • Security & Resilience: Deep understanding of threat modelling, authentication patterns, and observability, • Modern Development: Familiarity with languages such as Ruby, Python, or Java, alongside CI/CD, TDD, and containerisation, • Communication: Exceptional ability to simplify complex topics and build consensus across diverse groups, • Experience with enterprise ERP platforms (e.g., Oracle E‑Business Suite), • Knowledge of UK government digital service standards and assurance processes, • Familiarity with Domain‑Driven Design (DDD) or event‑driven architectural approaches, • Prior consultancy experience working across multiple product teams or client environments The role involves a mix of modern cloud‑native services and legacy enterprise platforms. • Cloud: AWS (IaaS, PaaS), • Tooling: Infrastructure as Code, Git workflows, and Mac‑based development environments, • Frameworks: DDD, TDD, and automated testing 100% FREE LEARNING LINKED TO JOB ROLES Just like all of our courses, the Mid‑Level Accelerator is 100% free for all students. There are no secret or hidden fees, no payment upon completion, and no debt. We work with our partner companies to ensure this education is free for all learners. Benefits – vary per client, but are competitive. #J-18808-Ljbffr

Location: Remote / London Hybrid (optional) Contract Length: 3-6 months (with potential extension) We're partnering with a fast-growing startup on a mission to build a high-impact product used by thousands of customers. They are now looking for an hands-on Ruby Tech Lead to step in on a contract basis and drive technical direction, delivery, and team alignment during a key growth phase. This is a high-ownership role where you will influence architecture, mentor engineers, and help scale both the platform and engineering practices. • Lead the design and delivery of scalable, high-performance systems using Ruby (Ruby on Rails), • Provide technical leadership to a small but growing engineering team, • Own architecture decisions and help evolve the platform as it scales, • Collaborate closely with Product, Design, and Leadership stakeholders, • Drive best practices around code quality, testing, and deployment, • Contribute hands‑on to the codebase when needed, • Help shape the engineering roadmap and delivery strategy, • Strong experience as a Tech Lead or Senior Engineer in startup or scale‑up environments, • Deep expertise in Ruby / Ruby on Rails, • Proven experience with system design, architecture, and scaling applications, • Comfortable working in fast‑paced, ambiguous environments, • Experience mentoring or leading engineers, • Familiarity with modern cloud environments (AWS, GCP, or similar), • Strong communication skills and the ability to influence non‑technical stakeholders, • Experience in early‑stage startups or high‑growth scale‑ups, • Background working on consumer or marketplace products, • Exposure to microservices, event‑driven systems, or API‑heavy platforms, • DevOps or CI/CD exposure, • Immediate impact in a high‑growth startup environment, • Work alongside an ambitious and collaborative founding/leadership team, • Flexibility with remote‑first setup in the UK, • Opportunity for contract extension or future permanent role Apply now or reach out directly to learn more — we'd love to share further details on the product, roadmap, and team. #J-18808-Ljbffr

Opus Recruitment Solutions is seeking a Contract Ruby Tech Lead for a high-growth startup. The role involves leading scalable system design using Ruby on Rails, driving technical direction, and mentoring engineers. This position offers a hybrid remote setup in London and potential contract extension. The ideal candidate will possess deep expertise in Ruby/Ruby on Rails and technical leadership experience in startup environments, providing an opportunity to have a significant impact within the team. #J-18808-Ljbffr

Transreport Limited is seeking a Mid-Senior Ruby on Rails Engineer in London to enhance their operational systems. The ideal candidate has over 4 years of experience with Ruby on Rails, strong knowledge of PostgreSQL, and skills in AWS.

Graduate Trade Desk Operations Analyst London, United Kingdom Posted about 1 year ago This is a job posted by our partner Jooble Tech stack Operations Analyst Scala Python STEM C Ruby Go Logical thought processes A STEM degree from a top-ranked University An interest and some coding abil

True North Consulting Group Ltd is seeking a Senior Ruby Developer for a 3-month government contract with an ASAP start.

What You'll Do Design and implement scalable, high-performance backend systems to power our e-commerce experience Build and maintain interfaces that support our frontend, mobile, and third-party integrations * Be very experienced working with pull, push models for data parity between third parti

Ruby Hotels GmbH is seeking hospitality professionals in Greater London.Join a supportive and team-oriented environment where you can express your personality and work towards creating memorable guest experiences.This full-time role includes responsibilities such as welcoming guests, preparing drink

A leading software development company in the City of London seeks a Ruby Web Application Developer.

Rise Technical Recruitment Limited is looking for a Senior Ruby on Rails Engineer to join their startup in Fulham. The ideal candidate should have deep expertise in Ruby on Rails, PostgreSQL, Docker, and AWS, with a proven track record in developing RESTful APIs and managing third-party integrations

JS, Ruby, and Kafka, impacting everything from the development of APIs and the user interface to the database. Their software engineering stack looks like this: React, Redux, Ruby, Node, AWS, Linux, Elasticsearch, Cassandra, Kubernetes, Docker, and Kafka.

If you are an Ruby Developer, that is looking to learn from some of the best then APPLY NOW! Insight Recruitment Group work closely with businesses to create vacancies which are a true reflection of the working environment, role and career opportunity, and support our applicants through every step o

What Experience is Needed? 5+ years building Ruby on Rails experience Web-based MVC applications and APIs * Mentoring / leading junior-mid level Engineers #J-18808-Ljbffr.

Key requirements: Ruby & Ruby on Rails Full-Stack Engineering:. A Senior Technical Lead (Ruby on Rails). Led the build-out and ongoing evolution of high-traffic Ruby on Rails platforms supporting significant commercial throughput.

Lead Full Stack Ruby Developer - Leading Legal Tech Company - Hybrid / Once a quarter onsite in Burgess Hill based office - £80,000 - £85,000 + benefits. Recruitment is delighted to partner with a leading Legal Tech organisation who are looking to add a Lead Full Stack Ruby Developer who can combi

At Koinly , we’re looking for a Tech Lead (Ruby on Rails) to push our financial data platform to the next level. Refactor and simplify complex Ruby systems. Architecture and refactoring Own and evolve our Ruby + Postgres backend.

The hunt (80% ToFu): You'll identify Senior Ruby talent through external signals: GitHub contributions, Open Source activity, Ruby gems, and niche technical communities. What you bring A “Ruby Rolodex”: You aren’t starting from scratch. Technical sourcing DNA: You have experience in TA, with a

The hunt (80% ToFu): You'll identify Senior Ruby talent through external signals: GitHub contributions, Open Source activity, Ruby gems, and niche technical communities. You'll experiment with AI to find "hidden" Senior Rubyists and act as a filter against synthetic talent or proxy candidates. Ready

What you bring: 6+ years of professional Ruby experience. At Koinly, we’re hiring a Senior Ruby Developer to build and maintain scalable backend systems for over 2 million crypto investors. You’ll write high-performance Ruby/Rails code and continuously improve speed, reliability, and the overall

Ruby on Rails Developer – London (Hybrid) A fast-growing technology business is building the next generation of insurance solutions, helping major e-commerce platforms protect customers while delivering simple, modern insurance experiences. They are scaling, ambitious, and building properly from day one: regulated, revenue-generating, and already expanding across Europe with serious backing behind them. If you want meaningful ownership instead of being another developer lost in a big corporate machine, this is a chance to help shape something from the ground up alongside a small, highly capable engineering team. You will be working across a modern platform built predominantly in Ruby on Rails (with Python also used within the stack), contributing to backend services, APIs and integrations with platforms like Shopify and Magento. You will have genuine input on architectural direction, opportunities to improve infrastructure as things scale, and the trust to ship great work without unnecessary noise. If your background is stronger in Python than Ruby, that is absolutely fine. Required experience: 2+ years’ commercial engineering experience Strong Ruby on Rails or Python experience Solid understanding of API-led development Comfortable working across modern full-stack environments Someone who enjoys ownership, initiative and working in a small, ambitious team In return, you will be joining a genuinely exciting scaling environment rather than a maintenance role: greenfield work, a collaborative culture built around ownership and ambition, a performance-linked quarterly bonus structure, equity eligibility and the chance to help shape a product with serious long-term potential. If you want to build real products, have a voice, and join a bright, driven engineering team making something meaningful, this is worth a conversation

Software Developer Location: London minimum of 3 days a week (for the 1st month it is expected they will be in 5 days, dependent on project) Length: 12 months Salary: £48,000 per annum *CANDIDATES MUST BE UK NATIONALS AND ELIGIBLE FOR SC CLEARANCE* Role Overview We are seeking an experienced Application Developer with strong expertise in Java and Web Technologies to design, develop, and support enterprise-grade applications. The role involves working across the full software development lifecycle, building scalable solutions using the Java/JEE stack, and contributing to modern, secure, and high-performing systems. You will play a key role in developing clean, reusable code, supporting live services, and mentoring junior team members while following modern engineering standards and DevOps practices. Key Responsibilities Application Development & Engineering Design, develop, and maintain applications using Java/JEE technologies Build and enhance web applications using frameworks and languages such as Java, Groovy, or Ruby Write clean, secure, well-tested code following test-driven development (TDD) principles Develop reusable, open, and maintainable code components Contribute to modern development standards and best practices Architecture & Design Implement enterprise-level features such as: Dependency Injection / Inversion of Control (IoC) Aspect-Oriented Programming (AOP) Functional programming patterns Transaction management frameworks Batch processing solutions Participate in systems design and architecture discussions Support systems integration across enterprise platforms and services DevOps & Delivery Apply DevOps methodologies to improve build, deployment, and delivery pipelines Optimize development processes and continuously improve efficiency Manage availability and capacity of applications Support CI/CD pipelines and automation practices Testing & Quality Champion test-driven development and quality-first principles Ensure code is secure, performant, and resilient Conduct code reviews and improve engineering standards Production Support & Operations Operate and support services in production Monitor applications and identify, troubleshoot, and resolve issues Contribute to service support and ongoing system improvements Collaboration & Mentorship Collaborate with cross-functional teams including product, QA, and operations Coach and mentor junior developers Promote a culture of learning and continuous improvement Maintain strong focus on user needs and experience Core Skills & Expertise Strong experience with Java / JEE and web technologies Knowledge of: Dependency Injection (e.g., Spring) AOP and IoC Data access frameworks (e.g., Hibernate/JPA) Transaction management systems Batch processing frameworks Familiarity with DevOps tools and practices Understanding of: Information security principles System integration and APIs Modern software engineering standards Key Competencies Programming & software engineering excellence Systems design and integration Development process optimisation Prototyping and innovation Service support and reliability engineering Availability and capacity management Strong user focus and problem-solving mindset If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website

Principal Geoenvironmental Consultant Central London £60,000 - £70,000 + Benefits An exciting opportunity has become available for a Principal Geoenvironmental Consultant to join a highly respected multidisciplinary consultancy in Central London. This is an excellent role for an experienced consultant looking to take the next step in their career within a growing and technically strong team working on a wide variety of complex brownfield and infrastructure projects across the UK. The successful Principal Geoenvironmental Consultant will lead and manage geoenvironmental projects from initial site investigation through to remediation and verification. You will work closely with clients, regulators and internal teams, while also supporting the development of junior staff and contributing to business growth. The successful Principal Geoenvironmental Consultant will have: Extensive experience within geoenvironmental consultancy Strong knowledge of contaminated land legislation and risk assessment Experience managing complex site investigations and remediation projects Excellent report writing and client-facing skills A degree in Geology, Environmental Science, Earth Science or a related discipline Chartered status or working towards Chartership A full UK driving licenceThe role offers: Competitive salary and benefits package Hybrid and flexible working arrangements Clear progression opportunities into senior leadership Exposure to high-profile London development and infrastructure projects Support towards further professional development and Chartership A collaborative and supportive working environmentThis is a fantastic opportunity to join a well-established consultancy with an excellent reputation in the industry and a strong pipeline of exciting projects. If you are interested in this or other Geoenvironmental opportunities, please contact Ruby Evans at Penguin Recruitment

Senior Ruby on Rails Engineer Fulham (2/3 days on-site) £60,000 - £80,000 + Private Healthcare & Benefits This is an excellent opportunity for a Mid-to-Senior Ruby on Rails Engineer to join a start-up in a role where you will play a major part in future developments. This company is a Series A startup, breaking down barriers and making the world more accessible for everyone. Originally founded within the UK transport sector, they have developed award-winning, innovative solutions that prioritise dignity, safety, and inclusion for millions of users. In this varied role, you will move beyond feature development to focus on the stability, performance, and observability of the core Rails ecosystem. You will act as a trusted backend partner for Product and Platform teams, stabilising third-party integrations, improving background job efficiency, and utilising architectural documentation like C4 models to ensure long-term scalability. The ideal candidate will be a seasoned Ruby on Rails developer with deep expertise in PostgreSQL and background processing via Sidekiq and Redis. You should be highly proficient in building RESTful APIs, managing JSON serialisation, and implementing secure authentication methods like JWT or SSO. Beyond coding, you will possess knowledge of Docker and AWS, alongside the communication skills required to translate complex technical risks into clear operational priorities. This is a fantastic opportunity to join a purpose-led business during a period of international scaling. You will have the autonomy to own multiple backend systems, reduce operational risk across global integrations, and play a pivotal role in shaping the architectural future of a platform recognised for its excellence in accessibility and safety. The Role: Lead the evolution of core Ruby on Rails operational platforms. Optimise PostgreSQL performance and Sidekiq background job efficiency. Manage secure third-party integrations and RESTful API design. Partner with Platform teams on AWS and CI/CD reliability. The Person: Deep experience with Ruby on Rails and OOP. Expert in PostgreSQL tuning and complex query optimisation. Proficient with Docker, AWS, and containerised deployment workflows. Strong communicator, capable of leading production incident responses. Reference Number: BBBH(phone number removed) Rise Technical Recruitment Ltd acts an employment agency for permanent roles and an employment business for temporary roles. The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client. We are an equal opportunities company and welcome applications from all suitable candidates

Contract Ruby Tech Lead (Startup) Location: Remote / London Hybrid (optional) Contract Length: 3–6 months (with potential extension) About the Role We’re partnering with a fast-growing startup on a mission to build a high-impact product used by thousands of customers. They’re now looking for a hands-on Ruby Tech Lead to step in on a contract basis and drive technical direction, delivery, and team alignment during a key growth phase. This is a high-ownership role where you’ll influence architecture, mentor engineers, and help scale both the platform and engineering practices. What You’ll Be Doing Lead the design and delivery of scalable, high-performance systems using Ruby (Ruby on Rails) Provide technical leadership to a small but growing engineering team Own architecture decisions and help evolve the platform as it scales Collaborate closely with Product, Design, and Leadership stakeholders Drive best practices around code quality, testing, and deployment Contribute hands-on to the codebase when needed Help shape the engineering roadmap and delivery strategy ✅ What We’re Looking For Strong experience as a Tech Lead or Senior Engineer in startup or scale-up environments Deep expertise in Ruby / Ruby on Rails Proven experience with system design, architecture, and scaling applications Comfortable working in fast-paced, ambiguous environments Experience mentoring or leading engineers Familiarity with modern cloud environments (AWS, GCP, or similar) Strong communication skills and the ability to influence non-technical stakeholders ⭐ Nice to Have Experience in early-stage startups or high-growth scale-ups Background working on consumer or marketplace products Exposure to microservices, event-driven systems, or API-heavy platforms DevOps or CI/CD exposure Why Join Immediate impact in a high-growth startup environment Work alongside an ambitious and collaborative founding/leadership team Flexibility with remote-first setup in the UK Opportunity for contract extension or future permanent role Interested? Apply now or reach out directly to learn more — we’d love to share further details on the product, roadmap, and team

Level 2 or 3 Nursery assistant to work in mainstream primary school. 8:30 am - 4pm, Monday - Friday term time only ASAP start until July with potential September permanent opportunity. £90-£110 per day/ £450 - £550 per week Are you a qualified early years practitioner looking for a role that is term time only? Do you have a Level 2 or 3 childcare qualification? Are you passionate about providing children with the best education and preparation for reception? This lovely primary school based in Hillingdon, London is looking for a nursery assistant to join their team. The school is children centred and their ethos is to ensure the best education, development, and school journey for the children. Close to local stations, this primary school is accessible from all over West London. You will be supporting children within the nursery with their learning, set activities and general care. You will be able to support children for the final term of this academic year and help to prepare them for the big step into reception class, making sure they are where they need to be educationally and emotionally. For an experienced and confident nursery assistant there will be the opportunity to cover the class, hold interventions with small groups and run clubs across the school. If you do well there is the opportunity to return to school in September, this primary school will have roles across the school for experienced and passionate teaching assistants as well as nursery assistants so if you are looking to gain experience with older year groups, this could be the ideal opportunity for you! If this sounds like your next step or would be interested in more information, please apply below or email your CV and a bit about you over to Ruby @ Reeson Nursery Assistant - EYFS - Early Years Assistant - Teaching Assistant - Nursery - Primary - Ealing- London - ASAP - Term time Reeson Education: Reeson Education is the England's Premier Recruitment Agency. Established in 2006 by experienced teachers, education professionals and recruitment specialists, we have built our business and reputation on the cores values of honesty, integrity and excellence. We care about education and the provision of education and have established an excellent reputation with schools and teachers alike. At Reeson Education we work closely with a large network of Nurseries, Primary Schools, Secondary Schools and Colleges across the UK. Our client base provides us with an abundance of available daily supply, long term and permanent opportunities across all age groups in all areas of London. Reeson Education is an Equal Opportunities employer and is committed to the highest standards of safeguarding and the promotion of the welfare of children, young people and adults and expects all staff to share this commitment. Please note, where a salary or daily rate range is stated, the higher rate applies to candidates who meet the enhanced experience, training or qualification requirements specified within the advert. All daily/hourly rates quoted are inclusive of holiday pay at 12.07

Our technology platform is built in Ruby on Rails, and we also use a bunch of AWS services (via Terraform), Postgres, Docker, and a little bit of React.

Bannatyne is renowned for providing exceptional fitness and wellness experiences across the UK.We are committed to maintaining the highest standards of cleanliness and hygiene to ensure our members have a safe and welcoming environment.We are currently looking for a dedicated and detail-oriented Mem

Become a Self-Employed Delivery Driver with Evri and Start Earning This Summer.Looking to boost your income over the summer months? Whether you're saving for a holiday, covering extra expenses, or just want more cash in your pocket, now’s the perfect time to get started.Join Evri as a self-employe

We are thrilled to offer an exciting opportunity to join our dedicated team in Bromham, Bedford as an enthusiastic and motivated Support Worker.This is more than a job-it's a chance to work alongside people with learning and physical disabilities, helping them reach their life goals and embrace thei

Become a Self-Employed Delivery Driver with Evri and Start Earning This Summer.Looking to boost your income over the summer months? Whether you're saving for a holiday, covering extra expenses, or just want more cash in your pocket, now’s the perfect time to get started.Join Evri as a self-employe

Are you looking for the right role for you? Then look no further Site Team Leader Salary £15.Location Thorn Turn HWRC As a Site Team Leader at FCC Environment, you will lead the site team in the safe and effective operation of a Household Waste Recycling Centre (HWRC).You will play a key rol