10 junior service designer jobs found in London

Senior Software Developer in Test | SDET | React | Java | Outside IR35 Modern Test Strategy | Quality Engineering | Public Sector/Consultancy Delivery SR2 is supporting a consultancy partner delivering modern software engineering services across complex Java and React-based systems. This role sits within delivery teams as a hands-on, consultative Senior Software Developer in Test, focused on improving how quality is engineered into software. You'll work closely with developers and platform engineers to modernise testing approaches, reduce brittle end-to-end testing, and introduce smarter, more effective automation strategies, including AI-assisted testing techniques. You'll report into a Principal Software Engineer and act as a testing authority within delivery teams, shaping test strategy rather than just writing tests. The Role You'll take ownership of test architecture and automated testing strategy across Java and React applications, helping teams move away from slow,...

Senior Full Stack Engineer | Java | React | Outside IR35 Java | React | Modernisation | DDD | Microservices | AI-Assisted Engineering SR2 is supporting a consultancy-led delivery engagement focused on modernising large, complex software estates. This role suits a senior, hands-on Full Stack Developer who enjoys working closely to clients, reducing technical debt, and improving engineering practices across delivery teams. You'll operate as a consulting engineer within a multi-disciplinary environment, helping teams move faster and more safely through modern development approaches, tooling, and AI-assisted engineering techniques. The Role This is a hands-on senior engineering role, focused on modernising Java/React applications, improving developer productivity, and guiding teams toward better architectural and delivery outcomes. You'll work closely with platform, test, and client engineering teams, while reporting into a Principal Engineer and influencing technical...

Senior Java/React Full Stack Developer Location: London or Newcastle, UK (Hybrid - ~1 day per week in office / onsite) Contract: Contract - 6 months with view to extend Day Rate: £550–£600 per day - Outside IR35 About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy. We help organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering work focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer experience. About the Role We are looking for a Senior Java/React Full Stack Developer to join Appvia on a contract basis, working as a hands-on engineering consultant within our Solutions Engineering team. This role is focused on modernising large, complex software systems, reducing technical debt, and improving delivery speed...

Senior Java/React Full Stack Developer Location: London or Newcastle, UK (Hybrid - ~1 day per week in office / onsite) Contract: Contract - 6 months with view to extend Day Rate: £550–£600 per day - Outside IR35 About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy. We work with organisations to improve software quality, reliability, and delivery outcomes through modern engineering and testing practices. Our teams focus on reducing risk in complex systems by improving automated testing, architectural clarity, and developer feedback loops. About the Role We are seeking a consultative Senior Software Developer in Test with hands-on experience in React and Java to join Appvia as a hands-on testing and quality engineering consultant. This role is centred on modernising automated test strategies for Java/React-based applications, moving away from brittle, heavyweight end-to-end testing towards more effective integration,...

Contract Snr .NET Engineer - FinTech - OUTSIDE IR35 - £625/day We’re partnering with a leading FinTech company based in London to find an exceptional contractor who thrives in backend development. As a Senior .NET Engineer, you’ll design, develop, and optimise backend solutions for complex financial applications. You'll work in a collaborative environment, ensuring the delivery of scalable and secure solutions for critical FinTech projects. This is a backend-focused role, but familiarity with front-end tools like Angular is a nice-to-have. Key Responsibilities: Develop and maintain backend applications using C#, .NET, and Azure. Leverage Microsoft SQL Server services (database, integration services, reporting services) and write complex T-SQL stored procedures. Implement design patterns such as Factory, Adapter, and Chain of Responsibility to ensure clean and maintainable code. Utilise Object Relational Mappers (ORMs) like Entity Framework for efficient...

Role: Senior Full Stack Engineer London 1x a week Rate: Up to £600 per day - Outside IR35 Length: 6 Months (Good chance of extension) About the Role We are seeking a Senior Java / React Full Stack Developer to join our client on a contract basis as a hands-on engineering consultant within a Solutions Engineering team. This role centres on modernising large-scale, complex software systems, reducing technical debt, and improving delivery speed and reliability. You will work closely with client engineering teams, alongside platform and test engineers, helping to introduce modern development practices and AI-assisted engineering techniques to enhance productivity. You will report to a Principal Software Engineer and play a key role in promoting and embedding best practices within delivery teams. About You You are an experienced, hands-on Java/React developer who enjoys working on complex systems and influencing how software is designed, built, and...

Job Role: DevOps and Automation Engineer Location: Hybrid - London (or as agreed) Contract: 12 months, Outside IR35 We are seeking a senior, hands-on DevOps and Automation Engineer to join the Enterprise Change / Project team. This strategic, long-term contractor role supports Enterprise Change initiatives, product demand, and platform/process improvements , providing dedicated DevOps capability where gaps historically existed. Role Purpose Deliver DevOps and automation capability across Enterprise Change initiatives . Improve deployment, release, automation, and infrastructure processes . Act as a senior, hands-on engineer who can operate independently . Support the organisation's evolution toward AI-driven automation and Agentic AI , learning and applying these on the job. Key Responsibilities Design, build, and maintain CI/CD pipelines . Automate and improve deployment and release processes . Support hybrid infrastructure ,...

Role: Senior Full Stack Engineer London 1x a week Rate: Up to £600 per day - Outside IR35 Length: 6 Months (Good chance of extension) About the Role We are seeking a Senior Java / React Full Stack Developer to join our client on a contract basis as a hands-on engineering consultant within a Solutions Engineering team. This role centres on modernising large-scale, complex software systems, reducing technical debt, and improving delivery speed and reliability. You will work closely with client engineering teams, alongside platform and test engineers, helping to introduce modern development practices and AI-assisted engineering techniques to enhance productivity. You will report to a Principal Software Engineer and play a key role in promoting and embedding best practices within delivery teams. About You You are an experienced, hands-on Java/React developer who enjoys working on complex systems and influencing how software is designed, built, and evolved....

Job Role: DevOps and Automation Engineer Location: Hybrid - London (or as agreed) Contract: 12 months, Outside IR35 We are seeking a senior, hands-on DevOps and Automation Engineer to join the Enterprise Change/Project team. This strategic, long-term contractor role supports Enterprise Change initiatives, product demand, and platform/process improvements , providing dedicated DevOps capability where gaps historically existed. Role Purpose Deliver DevOps and automation capability across Enterprise Change initiatives . Improve deployment, release, automation, and infrastructure processes . Act as a senior, hands-on engineer who can operate independently . Support the organisation's evolution toward AI-driven automation and Agentic AI , learning and applying these on the job. Key Responsibilities Design, build, and maintain CI/CD pipelines . Automate and improve deployment and release processes . Support hybrid infrastructure , including...

Role: Senior Full Stack Engineer London 1x a week Rate: Up to £600 per day - Outside IR35 Length: 6 months (Good chance of extension) About the Role We are seeking a Senior Java/React Full Stack Developer to join our client on a contract basis as a hands-on engineering consultant within a Solutions Engineering team. This role centres on modernising large-scale, complex software systems, reducing technical debt, and improving delivery speed and reliability. You will work closely with client engineering teams, alongside platform and test engineers, helping to introduce modern development practices and AI-assisted engineering techniques to enhance productivity. You will report to a Principal Software Engineer and play a key role in promoting and embedding best practices within delivery teams. About You You are an experienced, hands-on Java/React developer who enjoys working on complex systems and influencing how software is designed, built, and evolved. You bring:...