19 developer jobs found in London

🤖 Senior Android Engineer – Fintech - 6m OUTSIDE contract 💷 Up to £500/day | Outside IR35 📆 6-Month Contract 📍 Central London – 3 days onsite We’re working with a leading fintech scale-up looking for an experienced Senior Android Engineer to join their mobile engineering team on an initial 6-month contract. 📱 This is a highly product-focused role, working on a major Android product build and creating polished, data-rich mobile experiences. You’ll have genuine end-to-end ownership , from initial idea and technical approach through to testing and release. 👨 💻 A senior doer This is an important one: they need someone senior who is still very close to the code. They’re not looking for a hands-off Lead, they want a highly technical, hands-on Senior Android Engineer who can make good architectural decisions but still enjoys getting stuck into the implementation. You’ll also need to be a confident, clear communicator who can articulate your...

Senior Flutter Developer - Full Stack - London - Outside IR35 My client, a start up requires a Senior Flutter Developer with full stack experience for a permanent position. your CV must evidence recent experience with the following: Senior Flutter Development Firebase Services JAVA Spring Boot Framework API's Data Structures This position is based in Marylebone London.

Senior Product Developer - 3 Positions A leading Market Data and Intelligence organisation is looking for three Senior Product Developers to join its engineering teams, working on software and data products within a large-scale, data-driven environment. The roles will focus on developing and enhancing applications using .NET/C#, Azure and SQL Server , with responsibility across the full software development life cycle. You'll be working on products supporting financial institutions and investment professionals, solving complex technical and data challenges. The technology environment is centred around the Microsoft ecosystem , with .NET/C#, SQL Server and Azure forming key parts of the platform. Depending on the product area, you may also work with Azure DevOps, CI/CD, REST APIs, Blazor and data ingestion/ETL . As a senior developer, you'll contribute to technical decisions, improve existing systems, address technical debt and work closely with Product, Engineering,...

Power Platform Developer £520/day Outside IR35 - Central London (3 days per week) - Active SC Clearance Required - NPPV3 Desirable - Contract until 31 March 2027 We're seeking an experienced Power Platform Developer to join a major programme within a secure environment. This is a hands-on delivery role focused on the design, development and enhancement of Power Platform solutions. You'll work closely with technical and business stakeholders to develop scalable applications, automate business processes and support the delivery of business-critical services. The successful candidate will have strong experience developing Power Apps solutions, particularly Canvas Apps, alongside a solid understanding of Dataverse and data modelling. You'll also bring experience with Microsoft Copilot Studio and be comfortable engaging directly with stakeholders to understand requirements and translate them into practical technical solutions. Key responsibilities: * Design, build and...

Role: Senior C# Developer Location: London (Remote) Day Rate: Up To £600 Per Day Type: Contract (Outside ir35) A highly regarded financial institution is seeking an experienced C# Developer to join their technology team on a contract basis. This role sits within a fast-paced environment focused on delivering robust, scalable solutions that support critical business operations. Key Responsibilities Develop and maintain high-performance applications using modern Microsoft technologies Collaborate with cross-functional teams to define, design, and deliver solutions Contribute to architectural decisions and best practices Ensure code quality, performance, and reliability through testing and optimisation What We're Looking For Extensive experience in software development using C# and the .NET ecosystem Strong understanding of modern application architecture and design principles Proven ability to build scalable and maintainable systems...

Developer (Dynamics 365 CE) - £500-£550 a day (active SC Clearance required) - Outside IR35 - London/Hybrid - 6 month initial contract. We need a highly skilled Dynamics 365 Developer to work with a Central Government client (who holds active SC Clearance) with extensive expertise in CRM Customer Engagement and Power Platform technologies. The role demands strong knowledge in Microsoft Dynamics 365 CRM customisation, integration, and development using various programming languages and frameworks. Core Technical Expertise Extensive experience as a Technical Consultant specialising in CRM Customer Engagement solutions Proficient in Power Platform technologies including Automate flows and Canvas Apps Strong skills in Dynamics 365 CRM configuration, customisation, and integration capabilities Expertise in integration technologies like Logic Apps, HTTP, JSON Proficiency in programming languages such as .NET, C#, JavaScript Development and Project Leadership...

Fullstack Developer - Node - Typescript - AI - AI Agents - TDD - Up to £525 per day (Outside IR35) - Hybrid - 3 month contract - Immediate Starters We're a mission-driven tech company that builds products to help people make confident decisions about their finances and everyday services. They are looking for a strong Fullstack Engineer who is excited about working with new technologies and has hands on commercial experience with Node, Typescript and React Essential Skills: Strong commercial experience with React and Typescript. Commercial experience in Node Must have commercial experience working with AI and AI Agents Experience configuring, deploying, and monitoring applications on AWS. TDD (Test-Driven Development) experience. Comfortable working with relational and NoSQL databases, including complex queries and performance optimization. Solid understanding of web design patterns, including SOLID principles. Experience working in an agile, collaborative environment....

A specialist consultancy is seeking an experienced NHS Power BI Developer to support the delivery of a high-profile healthcare transformation programme within the NHS. You'll be responsible for developing reporting and analytics solutions that enable operational and clinical teams to make informed, data-driven decisions. Client Details Our client is an established consulting organisation delivering complex technology, data and transformation programmes across the public sector. They are currently supporting a large NHS programme and require additional BI expertise to strengthen their reporting and analytics capabilities. Description Design, develop and maintain Power BI dashboards and reports. Create management information and reporting solutions for operational and clinical stakeholders. Develop and optimise data models to support reporting requirements. Work with stakeholders to gather and translate business requirements into technical solutions. Support healthcare...

A specialist consultancy is seeking an experienced NHS Power BI Developer to support the delivery of a high-profile healthcare transformation programme within the NHS. You 'll be responsible for developing reporting and analytics solutions that enable operational and clinical teams to make informed, data-driven decisions. Client Details Our client is an established consulting organisation delivering complex technology, data and transformation programmes across the public sector. They are currently supporting a large NHS programme and require additional BI expertise to strengthen their reporting and analytics capabilities. Description Design, develop and maintain Power BI dashboards and reports. Create management information and reporting solutions for operational and clinical stakeholders. Develop and optimise data models to support reporting requirements. Work with stakeholders to gather and translate...

A specialist consultancy is seeking an experienced BI Developer to support the delivery of a high-profile healthcare transformation programme within the NHS. You'll be responsible for developing reporting and analytics solutions that enable operational and clinical teams to make informed, data-driven decisions. Client Details Our client is an established consulting organisation delivering complex technology, data and transformation programmes across the public sector. They are currently supporting a large NHS programme and require additional BI expertise to strengthen their reporting and analytics capabilities. Description Design, develop and maintain Power BI dashboards and reports. Create management information and reporting solutions for operational and clinical stakeholders. Develop and optimise data models to support reporting requirements. Work with stakeholders to gather and translate business requirements into technical solutions. Support healthcare performance...

A specialist consultancy is seeking an experienced BI Developer to support the delivery of a high-profile healthcare transformation programme within the NHS. You 'll be responsible for developing reporting and analytics solutions that enable operational and clinical teams to make informed, data-driven decisions. Client Details Our client is an established consulting organisation delivering complex technology, data and transformation programmes across the public sector. They are currently supporting a large NHS programme and require additional BI expertise to strengthen their reporting and analytics capabilities. Description Design, develop and maintain Power BI dashboards and reports. Create management information and reporting solutions for operational and clinical stakeholders. Develop and optimise data models to support reporting requirements. Work with stakeholders to gather and translate business...

Power Platform Developer £520/day Outside IR35 - Central London (3 days per week) - Active SC Clearance Required - NPPV3 Desirable - Contract until 31 March 2027 We're seeking an experienced Power Platform Developer to join a major programme within a secure environment. This is a hands-on delivery role focused on the design, development and enhancement of Power Platform solutions. You'll work closely with technical and business stakeholders to develop scalable applications, automate business processes and support the delivery of business-critical services. The successful candidate will have strong experience developing Power Apps solutions, particularly Canvas Apps, alongside a solid understanding of Dataverse and data modelling. You'll also bring experience with Microsoft Copilot Studio and be comfortable engaging directly with stakeholders to understand requirements and translate them into practical technical solutions. Key responsibilities: * Design, build and...

JWT/JSON Developer Location: London - Hybrid/2 days per week onsite Contract Length: 6 months Day Rate: Up to £650 a day (Outside IR35) We're supporting a leading UK financial services organisation in the search for an experienced JWT/JSON Developer to join a high-performing engineering team on an initial 6-month contract. This role will focus on authentication, authorisation and secure service-to-service communication across a large-scale digital platform. You'll be working on OAuth 2.0 and OpenID Connect (OIDC) implementations, JWT-based authentication, and integrations with identity providers within a modern cloud-native environment. Key Responsibilities Develop and maintain authentication and authorisation services Implement OAuth 2.0 and OIDC integrations with identity providers Work with JSON Web Tokens (JWTs), including issuance, validation, signing and key management Contribute to CI/CD pipelines and trunk-based delivery practices Write and review...

JWT / JSON Developer Location: London - Hybrid / 2 days per week onsite Contract Length: 6 months Day Rate: Up to £650 a day (Outside IR35) We 're supporting a leading UK financial services organisation in the search for an experienced JWT / JSON Developer to join a high-performing engineering team on an initial 6-month contract. This role will focus on authentication, authorisation and secure service-to-service communication across a large-scale digital platform. You 'll be working on OAuth 2.0 and OpenID Connect (OIDC) implementations, JWT-based authentication, and integrations with identity providers within a modern cloud-native environment. Key Responsibilities Develop and maintain authentication and authorisation services Implement OAuth 2.0 and OIDC integrations with identity providers Work with JSON Web Tokens (JWTs), including issuance, validation, signing and key management Contribute to CI/CD pipelines and trunk-based...

Senior Java Developer - Outside IR35 - Up to £700 per day We have partnered with a leader in the financial services sector who is looking for experienced Senior Java Engineers to join their Settlements team . This is a hands-on engineering role focused on developing and enhancing software supporting complex post-trade and settlement workflows . you'll work as part of an experienced engineering team, contributing to both new and existing systems within a fast-moving financial markets environment. The Role Develop and maintain Server Side Java/JVM applications supporting settlement and post-trade processes. Build robust, scalable services using Spring and Spring Boot . Work across greenfield and brownfield development projects. Collaborate with engineers and business stakeholders to understand requirements and deliver effective solutions. Contribute to technical design, development, testing and production delivery. Work with Kubernetes, event-driven...

DV Cleared Software Engineer London | onsite Outside IR35 | Long-term Contract Active DV Clearance Required I'm working with an organisation delivering a long term programme within UK Government that is looking to add experienced Software Engineers with strong Python skills to its team. The role will involve designing, developing and improving software solutions within a highly secure technical environment. You'll be working alongside experienced engineers and technical stakeholders on challenging projects where there is plenty of scope to contribute ideas and influence how solutions are built. What we're looking for: Strong commercial Python development experience Background as a Software Engineer, Python Developer or Application Developer Experience developing applications in Linux environments Knowledge of modern software engineering and development practices Exposure to data processing, messaging, integration or workflow-based systems Comfortable tackling...

TypeScript Engineer £500- £550 per day Outside IR35 1 day onsite - London We 're working with a large international travel and transport organisation that is modernising its digital ecosystem following the consolidation of multiple business units. The company is investing heavily in next-generation data and middleware platforms, and they 're looking for a TypeScript Engineer to help shape the services and tooling behind this transformation. The team 's mission is to replace legacy systems with clean, event-driven services and provide consistent, reliable data to applications across the business - from customer-facing products to operational systems. The Role You 'll be joining a multidisciplinary engineering team focused on building backend and occasionally frontend components using modern TypeScript across Node.js and React/Next.js. The role centres on developing APIs, event-driven services, and internal tools that support large-scale, cloud-hosted...

Full Stack Software Engineer (.NET) Location: Leeds/London (2 days per month onsite) Rate: £500 per day Engagement: Contract IR35 Status: Outside Start Date: ASAP Duration: 6 months with high likelihood of extension Overview Brio Digital is supporting a major NHS digital transformation programme via a delivery partner and we are looking for experienced Full Stack .NET Developers. You'll be working on the development and enhancement of critical healthcare applications, helping deliver scalable, secure, cloud-native solutions that directly support NHS services and patient outcomes. This is an excellent opportunity for developers who enjoy working across the full stack, with a strong Microsoft technology background and modern Front End expertise. Software Engineer Key Responsibilities: Design, develop and maintain enterprise-grade applications using .NET technologies Build and enhance responsive Front End applications using React and TypeScript...

Finance BI Transformation | Microsoft Fabric | Outside IR35 £450-500 per day Outside IR35 6 Month Initial Contract London (1-2 Days Per Week) A leading global consultancy is seeking a Senior Business Analyst to support a major Finance BI transformation programme. The organisation is migrating finance reporting from legacy SQL Server and SSAS environments into a consolidated Microsoft Fabric FinanceBI semantic model , creating a modern reporting and analytics capability across key finance functions. This is a highly visible role where you 'll act as the senior functional lead across requirements gathering, specification development, UAT and change management, whilst helping bring structure and direction to a growing BA function. The Role You 'll work closely with Finance stakeholders, Architects, Developers and the wider BI team to translate business requirements into scalable reporting and data solutions. Key responsibilities...