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7 api developer jobs found in London

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London api developer £700 and up
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Duration not stated  (6) 6 Months or more  (1)
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United Kingdom  (7)
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Greater London  (7)
Contract Spy
Apr 02, 2026
Duration not stated
.Net Developer at P92 Group UK Limited, London EC2A, £450-£750 per day
£450 - £750 per day
Contract Spy London EC2A, UK
Job Overview We are currently seeking a .NET Developer for a contractor role based in our UK office. The .NET Developer will be designing, developing, and testing software applications. Additionally, they will maintain existing codebases, troubleshoot issues, and collaborate with cross-functional teams. P92 has been appointed as an External Software Development Partner. The ideal candidate will have a strong technical background, with expertise in modern .Net stack, and possess a systems-thinking approach to understand the entire process comprehensively. The ideal candidate will be an experienced .Net contractor that is able to switch context quickly and hit the ground running. We expect a positive attitude, along with a high level of commitment and responsibility, to be agile and dedicated to high quality work. Education BSc / MSc degree in Computer Science, Information Engineering or a related subject or equivalent experience Experiences Minimum 3-5...
Contract Spy
Mar 16, 2026
6 Months or more
AI-First Full Stack Developer at ISTARI, London, 6 Months initial, £500–700 per day
£500 - £700 per day
Contract Spy London Area, United Kingdom
About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...
Contract Spy
Apr 01, 2026
Duration not stated
SAP Specialist Enterprise/Enterprise Architect at Sitcon Consulting, London, £600-£800 per day
£600 - £800 per day
Contract Spy London, UK
SAP Specialist/Architect A ‘can do’ pragmatic attitude that is delivery focussed and able to withstand project pressures due to tight timescales and complex IT ecosystems whilst working as part of a multi-disciplined project team. Excellent communication skills - capable of engaging both technical and non-technical audiences with the ability to articulate complex scenario, problems in a manner that is tailored for a given audience from stakeholders to developers. Willingness to take ownership of problems and subsequently resolve them by consulting and approving solutions with relevant stakeholders, business, solution architects & SME’s Work in tandem with other SAP Specialists to managing & influence stakeholders across a broad range of levels to achieve a consensus and champion delivery. Ensure solutions follow Client’s architecture principles, security standards, and financial governance requirements. Demonstrate pragmatism...
Contract Spy
Mar 30, 2026
Duration not stated
SC Solution Architect at Axiologik, London/Remote, 12 Months, £750 per day
£750 per day
Contract Spy London Area, United Kingdom
Axiologik is looking for an experienced Solution Architect to join them working on one of their biggest projects to date!   As a Senior Solution Architect, you will lead the design and delivery of solutions that are robust, scalable, and aligned with business needs. This role focuses on application architecture, integration architecture, and data architecture, driving best practices and enabling teams to deliver high-quality solutions. You will provide leadership to guide technical teams, influence architectural decisions, and run governance processes to ensure compliance and consistency.    £750DR Inside IR35 12 months Hybrid - infrequent travel to London as and when required Start date: ASAP   Key Responsibilities:   Leadership & Governance:   Lead and mentor architects and development teams, fostering collaboration and technical excellence.  Drive architectural decisions across...
Contract Spy
Mar 25, 2026
Duration not stated
SAP Specialist Enterprise/Enterprise Architect at Sitcon Consulting, London, £600-£800 per day
£600 - £800 per day
Contract Spy London, UK
SAP Specialist/Architect A ‘can do’ pragmatic attitude that is delivery focussed and able to withstand project pressures due to tight timescales and complex IT ecosystems whilst working as part of a multi-disciplined project team. Excellent communication skills - capable of engaging both technical and non-technical audiences with the ability to articulate complex scenario, problems in a manner that is tailored for a given audience from stakeholders to developers. Willingness to take ownership of problems and subsequently resolve them by consulting and approving solutions with relevant stakeholders, business, solution architects & SME’s Work in tandem with other SAP Specialists to managing & influence stakeholders across a broad range of levels to achieve a consensus and champion delivery. Ensure solutions follow Client’s architecture principles, security standards, and financial governance requirements. Demonstrate pragmatism...
Contract Spy
Mar 18, 2026
Duration not stated
SAP Specialist Enterprise/Enterprise Architect at Sitcon Consulting, London, £600-£800 per day
£600 - £800 per day
Contract Spy London, UK
SAP Specialist/Architect A ‘can do’ pragmatic attitude that is delivery focussed and able to withstand project pressures due to tight timescales and complex IT ecosystems whilst working as part of a multi-disciplined project team. Excellent communication skills - capable of engaging both technical and non-technical audiences with the ability to articulate complex scenario, problems in a manner that is tailored for a given audience from stakeholders to developers. Willingness to take ownership of problems and subsequently resolve them by consulting and approving solutions with relevant stakeholders, business, solution architects & SME’s Work in tandem with other SAP Specialists to managing & influence stakeholders across a broad range of levels to achieve a consensus and champion delivery. Ensure solutions follow Client’s architecture principles, security standards, and financial governance requirements. Demonstrate pragmatism...
Contract Spy
Mar 11, 2026
Duration not stated
SAP Specialist Enterprise / Enterprise Architect role at Sitcon Consulting, London, £600 - £900 a day
£600 - £900 per day
Contract Spy London, UK
SAP Specialist/Architect A ‘can do’ pragmatic attitude that is delivery focussed and able to withstand project pressures due to tight timescales and complex IT ecosystems whilst working as part of a multi-disciplined project team. Excellent communication skills - capable of engaging both technical and non-technical audiences with the ability to articulate complex scenario, problems in a manner that is tailored for a given audience from stakeholders to developers. Willingness to take ownership of problems and subsequently resolve them by consulting and approving solutions with relevant stakeholders, business, solution architects & SME’s Work in tandem with other SAP Specialists to managing & influence stakeholders across a broad range of levels to achieve a consensus and champion delivery. Ensure solutions follow Client’s architecture principles, security standards, and financial governance requirements. Demonstrate pragmatism when industry best practise...
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