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Are you a Full Stack Engineer who leans towards the backend but enjoys seeing features come to life end to end? Do you want to build systems that operate at global scale, handling real-time demand and complex marketplace dynamics? Looking for a role where you can ship frequently, own your work, and influence product decisions from day one? Senior Full Stack Engineer Location: Oxford (remote-first with 1 day per week onsite) Our client is scaling a globally used, consumer-facing platform that connects millions of users with real-world experiences. This is an opportunity to join a high-performing engineering team tackling complex challenges across distributed systems, real-time interactions, and marketplace dynamics. This is not a “ticket factory” environment. Engineers here are trusted to take ownership, move quickly, and build with purpose in a genuinely product-led culture. Why This Role is Great • Build at scale: Design and develop systems powering a global two-sided marketplace with high traffic and real-time interactions, • Own your impact: Take ideas from concept through to production and continuous improvement, • Ship frequently: Work in an environment where releases happen often and learning cycles are fast, • Shape the product: Collaborate closely with product and design to influence direction, not just delivery, • Work across the stack: Contribute to both user-facing features and core platform and infrastructure, • Solve meaningful problems: Tackle challenges across distributed systems, scalability, and performance Tech You’ll Get to Work With • Backend: Java (or other OO languages), • Frontend: React & TypeScript, • APIs: GraphQL, • Infrastructure: AWS & Kubernetes, • Data: SQL & NoSQL You don’t need experience with everything listed. Strong fundamentals and adaptability matter far more. About You You will thrive in this role if you enjoy working on systems that are used at scale and like seeing your work in production quickly. • Strong experience in backend or full stack engineering, • Solid understanding of system design and scalable architectures, • Experience building and maintaining production systems, • Comfortable working in product-led, fast-paced environments, • Enjoy taking ownership and delivering end to end solutions, • Curious mindset with a pragmatic, action-oriented approach Even if your experience does not align perfectly, transferable skills and a willingness to learn are highly valued. What You’ll Gain • Exposure to large-scale, real-world engineering challenges, • High autonomy with minimal bureaucracy, • Flexible, remote-first working environment, • A strong engineering culture focused on quality and ownership, • Opportunities to grow across product, platform, and infrastructure domains Ready to Build Something That Matters? If you are motivated by solving complex problems, shipping high-quality software, and working in a team that values ownership and impact, this could be the right move. Apply now or get in touch to learn more. Diversity & Inclusion Our client and our agency are committed to building inclusive environments where everyone can thrive. We welcome applications from all backgrounds and encourage candidates with diverse experiences and perspectives to apply, even if you do not meet every requirement listed.

Are you a Full Stack Engineer who leans towards the backend but enjoys seeing features come to life end to end? Do you want to build systems that operate at global scale, handling real-time demand and complex marketplace dynamics? Looking for a role where you can ship frequently, own your work, and influence product decisions from day one? Senior Full Stack Engineer Location: Oxford (remote-first with 1 day per week onsite) Our client is scaling a globally used, consumer-facing platform that connects millions of users with real-world experiences. This is an opportunity to join a high-performing engineering team tackling complex challenges across distributed systems, real-time interactions, and marketplace dynamics. This is not a “ticket factory” environment. Engineers here are trusted to take ownership, move quickly, and build with purpose in a genuinely product-led culture. Why This Role is Great • Build at scale: Design and develop systems powering a global two-sided marketplace with high traffic and real-time interactions, • Own your impact: Take ideas from concept through to production and continuous improvement, • Ship frequently: Work in an environment where releases happen often and learning cycles are fast, • Shape the product: Collaborate closely with product and design to influence direction, not just delivery, • Work across the stack: Contribute to both user-facing features and core platform and infrastructure, • Solve meaningful problems: Tackle challenges across distributed systems, scalability, and performance Tech You’ll Get to Work With • Backend: Java (or other OO languages), • Frontend: React & TypeScript, • APIs: GraphQL, • Infrastructure: AWS & Kubernetes, • Data: SQL & NoSQL You don’t need experience with everything listed. Strong fundamentals and adaptability matter far more. About You You will thrive in this role if you enjoy working on systems that are used at scale and like seeing your work in production quickly. • Strong experience in backend or full stack engineering, • Solid understanding of system design and scalable architectures, • Experience building and maintaining production systems, • Comfortable working in product-led, fast-paced environments, • Enjoy taking ownership and delivering end to end solutions, • Curious mindset with a pragmatic, action-oriented approach Even if your experience does not align perfectly, transferable skills and a willingness to learn are highly valued. What You’ll Gain • Exposure to large-scale, real-world engineering challenges, • High autonomy with minimal bureaucracy, • Flexible, remote-first working environment, • A strong engineering culture focused on quality and ownership, • Opportunities to grow across product, platform, and infrastructure domains Ready to Build Something That Matters? If you are motivated by solving complex problems, shipping high-quality software, and working in a team that values ownership and impact, this could be the right move. Apply now or get in touch to learn more. Diversity & Inclusion Our client and our agency are committed to building inclusive environments where everyone can thrive. We welcome applications from all backgrounds and encourage candidates with diverse experiences and perspectives to apply, even if you do not meet every requirement listed.

Senior Software Engineer Salary: £75,000 base + bonus + equity Location: Remote‑first (UK) — candidates must be based in West London or Oxfordshire Type: Permanent, Full-time The Opportunity We’re recruiting a Senior Software Engineer to join a UK‑based technology team working on a large‑scale, high‑impact digital platform. This is a remote‑first role offering flexibility, with occasional in‑person collaboration for candidates based in West London or Oxfordshire. You’ll join a collaborative, delivery‑focused environment where engineers take ownership from design through to production, with a strong emphasis on quality, performance, and continuous improvement. The Role As a Senior Engineer, you’ll act as a technical specialist with responsibility for end‑to‑end feature delivery. Depending on your background, the role can be backend‑focused or full‑stack, with involvement in architectural decisions and hands‑on development across modern, cloud‑hosted systems. Key Responsibilities • Design and build scalable, maintainable software solutions using modern engineering practices, • Take ownership of features from initial concept through to production deployment, • Contribute to architectural discussions and technical direction, • Ensure performance, reliability, and security through proactive design and testing, • Apply shift‑left testing practices, including unit, integration, and performance testing, • Mentor junior engineers through code reviews, technical guidance, and knowledge sharing, • Collaborate closely with product, QA, and UX teams in an agile environment, • Use modern development and AI‑assisted tools to improve productivity and code quality Essential Skills & Experience • Strong commercial experience with C# / .NET (backend) or full‑stack development using modern frontend frameworks, • Solid understanding of microservices, APIs, and distributed systems, • Experience with Azure, CI/CD pipelines, containerisation, and cloud‑native development, • Strong testing mindset, including automated and performance testing, • Experience working with SQL Server and data modelling, • Ability to solve complex technical problems and communicate solutions clearly, • Experience mentoring or supporting the development of other engineers Nice to Have • Experience in regulated or high‑availability environments, • Exposure to AI or machine‑learning‑enabled systems, • Experience with TDD, DDD, or BDD, • Background in performance‑critical or highly scalable platforms What’s on Offer • £75,000 base salary, • Bonus and equity package, • Remote‑first working model, • Interesting technical challenges in a modern engineering environment, • Strong culture of ownership, collaboration, and continuous improvement

Title: Full Stack Engineer (SC Clearable) Location: Aylesbury (1-2 days on site) Type: Up to £85,000 D.O.E I'm supporting a growing tech company looking for a Full Stack Developer who can take real ownership of their front-end. This role is ideal for someone who wants to shape how the UI is built, structured, and deployed, not just deliver tickets. They also need someone comfortable with agentic coding and building autonomous, modular components. The Role: Lead and structure the front-end architecture using React & and supporting backend services in Python Take full ownership of how the the SDLC Drive agentic coding practices across the UI Build scalable, high-quality interfaces and reusable components Work closely with engineering and product teams Operate within a cloud environment (AWS experience is a strong plus) What You'll Bring: Strong commercial React Python experience Confidence taking ownership and setting front-end standards Experience with AWS or cloud-based development (preferred) Ability to design scalable UI patterns and component libraries A proactive, autonomous approach to problem-solving Why This Role? You'll have genuine influence over the front-end direction, working in a modern engineering environment with plenty of autonomy and the opportunity to shape best practices. If you're interested in this role or know someone who would be, then please apply to this role and contact a. Methula@ io associates.co. ukc272c101-f45c-4783-b4a0-50ad222b87c0

We're looking for a hands-on Tech Lead who builds, ships, and leads by example. You'll own architecture, contribute across the stack, and work closely with Product to turn ambiguous problems into impactful solutions. You'll also integrate AI/LLM capabilities into production systems, ensuring reliable, real-world outcomes. Please make an application promptly if you are a good match for this role due to high levels of interest. Key Responsibilities • Translate business needs into scalable technical solutions, • Design and evolve system architecture, • Contribute across frontend, backend, and infrastructure, • Drive best practices in CI/CD, testing, and observability, • Build and optimise AI-powered features (LLMs, inference pipelines), • Communicate clearly with technical and non-technical stakeholders, • 7+ years' software engineering experience, • Proven Tech Lead or senior engineer experience, • Strong product mindset and ownership, • Full-stack capability (strong Python/backend focus), • Experience with AI/LLM systems (or ability to ramp quickly), • Excellent communication and leadership skills xrnqpay, • Experience with DDD, CQRS, or event-driven systems, • Background in large-scale or data-intensive platforms

Senior Software Engineer - Backend Focus (Viator). Working closely alongside product managers and designers, our engineers are part of the full process from software design, to code, to test, to deployment and back again. This is a backend focused full‑stack position in which you will be working m

A technology company in education is looking for a Junior Engineer to join their development team in Abingdon, UK. This role offers the opportunity to work on real projects, learn from experienced engineers, and develop technical skills.

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. They've completed Series A funding, raising $29 million across three funding rounds, and are now seeking a Senior Backend Engineer.

As a Senior Backend Engineer on our Structured Credit team, you will support the development of our market leading CLO product & support the launch of a new vertical. Development and engineering primarily on the backend services and web application hosted tools and systems of the 9fin platform. This

A recruitment firm is looking for a skilled backend engineer to develop coding benchmarks remotely. Candidates should have strong experience in backend software engineering, especially with Go programming. Ideal candidates will possess a degree in Software Engineering or a related field and have exp

A leading online gambling company in the United Kingdom is seeking a Software Developer to join their Customer Relationship Management team.In this role, you will enhance and support the customer engagement platform, utilizing skills in Cloud-based development, SQL, and.This position offers hybrid w

A leading healthcare technology provider is seeking a remote Backend Developer proficient in Kotlin and Java. The ideal candidate will collaborate with cross-functional teams to design backend services and APIs, ensuring quality and reliability.

Senior Product Engineer [Backend]. Join a high-growth startup as a core engineer building the future of Generative Marketing. You will own product areas end-to-end in a PM-free environment, designing secure backend systems for a platform used by Stripe and Canva.

This role involves building and enhancing Java backend services, while also maintaining Python ETL processes.

A growing technology company in the UK is seeking a hands-on Senior Software Developer to lead backend feature development.

A fintech SaaS company is seeking a Senior Back-end Engineer to join its high-growth team in London.

A leading technology company in Greater London is seeking a Backend Engineer to enhance their marketing technology stack.

Senior Backend Software Engineer. Lead technical direction within a senior squad, mentoring junior engineers and defining engineering standards for a rapidly growing 100-person team. Design and scale backend systems for item discovery, search, and complex multi-continent payment and credit workflows

A leading fintech company based in London seeks a Software Engineer with over 6 years of experience.

A scaling AI startup in Greater London seeks a Software Engineer to design and build backend services and APIs while developing new UI components.

A dynamic media technology company is looking for a talented Software Engineer (Java) to join their engineering team in the London area. In this full-time role, you will design and maintain backend services that power media and broadcast platforms. Candidates should have strong backend expertise, id

As a Senior Backend Engineer at Model ML, you'll be at the forefront of building and scaling the infrastructure that powers our product. Collaborate with ML engineers to productionise machine learning models and integrate them into backend systems. You'll drive technical decisions, mentor junior en

A growing SaaS platform in London is seeking a Principal Engineer to provide technical leadership and develop backend systems. You will mentor other engineers, shape architectural decisions, and be a key player in driving the technical direction of the company.

We're looking an experienced Expert Backend Engineer to join our expanding R&D team and help drive the growth of Wiz. Backend Engineering in a high-level programming language (e. End-to-end development of backend software components (research, design, development, testing, rollout, monitoring).

A fast-growing SAAS platform in the United Kingdom is seeking a skilled PHP developer with over 5 years of experience in PHP 8+, Symfony, and Laravel.You will collaborate with product managers and teams to enhance platform features, improve the codebase, and tackle key bugs.The role involves weekly

A leading governance and compliance solutions provider based in London is seeking a Senior Software Engineer proficient in Node. The successful candidate will build and manage complex backend services and APIs while contributing to design discussions. Ideal applicants will have 5-8 years of experien

A leading global investment bank seeks an experienced backend engineer in the West Midlands, focusing on micro-service development with Java and Spring.

You’ll join a team of thoughtful, collaborative engineers who support each other, share knowledge freely, and work closely with teams across domains. Proven experience in software development and systems engineering experience.

A revolutionary finance technology company in the UK is seeking an experienced engineer to design low-latency, fault-tolerant services for their perpetual futures exchange.

Senior/staff engineering experience with a focus on creating scalable, resilient backend systems. Help define and develop the core backend systems that will underpin our product, connecting blockchain and fintech systems in novel ways.

A leading tech company based in Greater London is seeking a passionate Software Engineer to join their innovative team. You will play a crucial role in designing and building backend systems that enhance product capabilities in their cutting-edge enterprise platform. Ideal candidates will have 6+ ye

As a Lead Backend Engineer, you will work within a product‑led engineering team responsible for designing and evolving core Back End services that support customer‑facing features at scale. Strong experience as a Lead Backend Engineer or senior‑level Back End engineer, using Python or another

A leading technology solutions provider in the United Kingdom is seeking full-time IT Engineers with a background in.

A technology company is seeking a Senior Developer with strong Python and Django expertise to take ownership of back-end systems.You'll work within a fast-paced environment, contributing to the Django REST API and enhancing system performance.This role offers a clear path toward technical leadership

A global travel technology company based in Greater London is seeking a skilled Software Engineer to design and implement scalable systems.

Senior Staff Engineer: L70 on our Engineering Progression Framework. Partner with Engineering Directors to shape the technical and product direction of a collective, providing leadership across multiple squads (30–70+ engineers) and ensuring alignment with company‑wide priorities. You enjoy ment

A leading cloud networking company in Greater London is seeking a Software Engineer to join a newly formed team. This role involves designing and building scalable backend systems to support the next phase of the company's growth. The ideal candidate should have over 6 years of experience in backend

An innovative firm is seeking a skilled developer to create containerized web applications.This remote opportunity allows you to leverage your expertise in Python and modern frameworks like FastAPI and Django.You'll be responsible for designing scalable applications, collaborating with cross-functio

Our engineers are naturally solution-oriented and possess an interest in the financial sector and focus on addressing our customer needs. Formal training or certification on software engineering concepts and applied experience. Recent hands-on professional experience as a back-end software engineer.

A leading gaming studio in the United Kingdom is seeking a Platform Backend Engineer. The ideal candidate has 3+ years of backend development experience, familiarity with NoSQL databases, and is proactive in problem-solving.

As a software engineer, you will join as a founding member of not only the London site, but really as a founding team for our multi-year journey to achieve our Lakehouse vision. Our backend teams span many domains across our essential service platforms. Build reliable, secure and high performance se

This is primarily a back-end role, and we are looking for a developer with experience building performant, distributed backend APIs and efficiently utilising third-party services.

A staffing and recruiting firm is looking for a mid-level backend developer to join their Ads Organization.

A leading sports data and analytics company is seeking a Software Engineer (Backend) to transform large datasets into engaging insights for data-driven decisions in sports.

A dynamic startup in Greater London is looking for a Backend Engineer with strong Node. Responsibilities include designing backend solutions, optimizing database performance, and collaborating with cross-functional teams in a supportive environment.

A global financial technology company in Greater London is seeking a Backend Engineer to drive its expansion. The ideal candidate will have 5+ years of experience in building scalable backend systems, primarily with Golang.

We are hiring Staff / Senior Backend Engineers who are comfortable building robust, scalable systems that power our AI platform. A senior backend engineer at Capsa is expected to own projects and features from conception to production, building the infrastructure and services that underpin our AI pl