18 backend developer jobs found in London, greater london

Backend Developer (Azure) - 3 Month Remote Contract Outside IR35 Rate: £420 - £475 per day We're looking for an experienced Azure Backend Developer to join a digital healthcare platform team on an initial 3-month contract, outside IR35. This is a hands-on role working on a mature Azure-based backend platform, with responsibility across the full software lifecycle - from design and development through to testing, deployment and production support. You'll be working with C#, .NET, Azure Functions, Azure SQL, Azure Service Bus, Azure API Management and Azure DevOps, contributing to a platform that supports connected patient services. This role is particularly suited to a developer who can hit the ground running, work independently and own technical delivery end-to-end without requiring day-to-day technical supervision. What You'll Be Doing Develop and deliver backend services using C#, .NET 6+ and Azure Functions . Build and maintain...

One of our media clients is looking for a Senior NetSuite Developer to support a wider NetSuite ERP implementation. Role: Senior NetSuite Developer (Procure-to-Pay) Location: Hybrid with 2-3 days a week in Central London Contract: Initial 3 months (Outside IR35) Day Rate: £540-£640pd Outside IR35 Start: ASAP/urgent requirement Company We are supporting a global organisation undergoing a significant finance transformation programme, centred on enhancing and scaling its NetSuite ERP environment. Operating across multiple international markets, the business is investing heavily in automation, systems integration, and process improvement to support continued growth and operational efficiency. The organisation has an established internal NetSuite leadership and architecture capability and is now looking to strengthen its development function with an experienced technical specialist who can translate solution designs into scalable, production-ready outcomes....

Risk Developer / Quant Developer - London (Hybrid) | Outside IR35 | Commodities I'm working with a commodities trading firm that's making a significant investment in its pricing and risk technology, and they're looking for an experienced Python Developer to help build the next generation risk platform. You'll be joining at the early stages of a greenfield programme, helping to design and develop the core services that convert market data into pricing, valuations and risk calculations used across the trading business. You'll work closely with traders, quantitative analysts and technology teams, taking ownership of complex engineering challenges while helping shape the architecture of a platform that's built for scale. The opportunity Build core pricing and risk engines using modern Python. Develop the technology behind commodity curve generation and valuation. Design scalable, distributed services capable of processing large volumes of market data and risk...

Back End Developer £500-£540 per day | Outside IR35 Java | Spring Boot | Secure Microservices LocationLondon (MOD site) Working Pattern4 days per week onsite ClearanceCurrent DV Security Clearance required BackgroundMOD / Defence experience required The Opportunity We're looking for an experienced Back End Developer to help build the core services behind a next-generation Defence Intelligence platform. You'll develop secure, scalable microservices and APIs that support mission-critical operational workflows, working within a highly secure environment alongside multidisciplinary engineering teams. This is an excellent opportunity to contribute to the delivery of innovative digital capabilities supporting Defence operations. About the Programme This programme is delivering an AI-enabled Defence Intelligence capability designed to improve visibility of operational data, streamline complex workflows and support faster, more informed decision-making. Working as part of an...

Front End Developer £500-£540 per day | Outside IR35 React | TypeScript | Secure, Analyst-Facing Applications LocationLondon (MOD site) Working Pattern4 days per week onsite ClearanceCurrent DV Security Clearance required BackgroundMOD / Defence / National Security experience required The Opportunity We're looking for an experienced Front End Developer to build intuitive, secure and role-aware interfaces for a next-generation Defence Intelligence platform. You'll work closely with UX Designers, Back End Developers and wider delivery teams to turn complex operational requirements into accessible, maintainable and high-performing applications that improve visibility, streamline workflows and support users in a mission-critical environment. This is an excellent opportunity to work on modern digital capabilities within a highly secure Defence environment. About the Programme This programme is delivering an AI-enabled Defence Intelligence capability designed to improve...

Full Stack Developer £500-£540 per day | Outside IR35 Java | Spring Boot | React | TypeScript | Secure Digital Platforms LocationLondon (MOD site) Working Pattern4 days per week onsite ClearanceCurrent DV Security Clearance required BackgroundMOD / Defence / National Security experience required The Opportunity We're looking for an experienced Full Stack Developer to help build and deliver secure, modern digital capabilities within a Defence environment. You'll work across both frontend and backend development, contributing to scalable services, APIs and intuitive user interfaces. Working closely with UX Designers, Product, Engineering and Defence stakeholders, you'll help turn complex operational requirements into reliable, user-focused technology. This is an excellent opportunity for a Full Stack Developer who enjoys working across the technology stack and wants to contribute to high-profile, mission-critical digital programmes within a highly secure environment....

Full Stack Developer – DV Cleared – 12 months - Up to £550 per day Outside IR35 – 4 days onsite in Central London FryerMiles are working with a brilliant Defence consultancy to recruit an experienced Full Stack Developer for a 12 month contract supporting a major Defence Intelligence programme. You will work within a multidisciplinary engineering team delivering a modern, secure solution combining user-centred design, workflow orchestration, cloud-native technologies and integration with existing MOD systems and tasking processes. Key Responsibilities Design and develop full-stack applications using Python, TypeScript and React Build modern, intuitive and responsive front-end applications Develop scalable backend services, APIs and microservices Integrate applications with existing MOD systems and data sources Support the development of AI-enabled, knowledge and semantic search capabilities Develop workflow and tasking functionality to reduce manual processes Work...

Full Stack Developer - DV Cleared - 12 months - Up to £550 per day Outside IR35 - 4 days onsite in Central London FryerMiles are working with a brilliant Defence consultancy to recruit an experienced Full Stack Developer for a 12 month contract supporting a major Defence Intelligence programme. You will work within a multidisciplinary engineering team delivering a modern, secure solution combining user-centred design, workflow orchestration, cloud-native technologies and integration with existing MOD systems and tasking processes. Key Responsibilities Design and develop full-stack applications using Python, TypeScript and React Build modern, intuitive and responsive front-end applications Develop scalable backend services, APIs and microservices Integrate applications with existing MOD systems and data sources Support the development of AI-enabled, knowledge and semantic search capabilities Develop workflow and tasking functionality to reduce manual...

Risk Developer / Quant Developer - London (Hybrid) | Outside IR35 | Commodities I'm working with a commodities trading firm that's making a significant investment in its pricing and risk technology, and they're looking for an experienced Python Developer to help build the next generation risk platform. You'll be joining at the early stages of a greenfield programme, helping to design and develop the core services that convert market data into pricing, valuations and risk calculations used across the trading business. You'll work closely with traders, quantitative analysts and technology teams, taking ownership of complex engineering challenges while helping shape the architecture of a platform that's built for scale. The opportunity Build core pricing and risk engines using modern Python. Develop the technology behind commodity curve generation and valuation. Design scalable, distributed services capable of processing large volumes of market data and risk...

Senior C# Engineer – .NET 8/9, AWS Lambda, SQS, SNS – OUTSIDE IR35 £700–£800/day • 100% Remote • 11-month rolling contract Takeaway: Lead the architecture and build of a greenfield SaaS platform as a deeply senior, hands-on C# engineer, with heavy emphasis on deep .NET engineering , high-performance distributed systems , and real-world AWS serverless delivery . You’ll also have the opportunity to develop hands-on skills with Claude Code , one of the most advanced AI-assisted development tools in the industry. Role Overview: You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You’ll Bring: Senior/Staff-level backend mastery in C# and .NET 8/9 , with the ability to architect and lead...

Salary: £300 - 450 per day Reference: COR7651A/AP148 UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO, development...

Salary: £300 - 450 per day Reference: COR7651A/AP148 UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house...

Salary: £300 - 450 per day Reference: COR7651/AP148 UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house...

Salary: £300 - 450 per day Reference: COR7651 UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO, development team,...

Salary: £300 - 450 per day Reference: COR7651A UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO,...

Salary: £300 - 450 per day Reference: COR7651 UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO,...

Salary: £300 - 450 per day Reference: COR7651A UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO, development team,...

UX Designer, Figma, Content-Heavy Platforms, to £420 per day outside IR35 A UX Designer opportunity has arisen with an established UK-based medical publishing business, working on a significant platform rebuild project across a suite of specialist digital products. Could this be the contract role where your UX expertise genuinely shapes how clinical professionals access and engage with education content? The Role The UX Designer will take ownership of translating a detailed internal requirements brief into a structured, evidence-led digital experience, determining what should be prioritised for launch, what follows in later phases, and what should be deprioritised altogether. You will plan user flows and site maps, conduct and synthesise user research, and produce wireframes and prototypes to developer-handover standard in Figma. The UX Designer will work collaboratively alongside an in-house CTO, development team, and web design resource, bringing...