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        Last 14 days
        232

        167 Contract API jobs in London + 20 miles

        Senior DevOps Engineer

        Tilt
        London
        £90,000 - £110,000 a year
        Help transition from a legacy REST API to GraphQL infrastructure
        Help transition from a legacy REST API to GraphQL infrastructure
        NEW
        You can design a RESTful API and list all the pros and cons of your design * You have an API-first product mindset: you care about customer outcomes and you like to listen to their use-cases before diving into code
        You can design a RESTful API and list all the pros and cons of your design * You have an API-first product mindset: you care about customer outcomes and you like to listen to their use-cases before diving into code
        more
        We are now scaling up with applications designed for major meeting platforms, real-time communication channels, and a powerful Public API to extend our functionality to a broader set of applications.
        We are now scaling up with applications designed for major meeting platforms, real-time communication channels, and a powerful Public API to extend our functionality to a broader set of applications.
        more
        Partner with Engineering for API-driven integrations and maintain data connectors to our dashboard. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.
        Partner with Engineering for API-driven integrations and maintain data connectors to our dashboard. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.
        more
        We are now scaling up with applications designed for major meeting platforms, real-time communication channels, and a powerful Public API to extend our functionality to a broader set of applications.
        We are now scaling up with applications designed for major meeting platforms, real-time communication channels, and a powerful Public API to extend our functionality to a broader set of applications.
        more
        Post-training techniques for planning, reasoning & complex workflows (e.g., Reasoning Models, LLMs + Knowledge Graphs, Test time compute, CoT pipelines, Tool use & API calling, etc.)
        Post-training techniques for planning, reasoning & complex workflows (e.g., Reasoning Models, LLMs + Knowledge Graphs, Test time compute, CoT pipelines, Tool use & API calling, etc.)
        more

        65 exact matches jobs are outside your preferred location

        Technical Architect

        Queen Square Recruitment Limited
        RG40, Wokingham
        £500 per day inside IR35
        Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
        Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
        more
        NEW

        Security Architect

        Queen Square Recruitment Limited
        Reading, Berkshire
        From £700 to £750 per day
        Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
        Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
        more
        NEW

        JML Solution Architect

        Infoplus Technologies UK Ltd
        Wokingham, Berkshire
        From £500 to £550 per day
        Role/Job title - Work Location - Wokingham - Role type - Permanent/Fixed Term/ Contracting - Contracting - Mode of working Hybrid /office based - Hybrid - If Hybrid, how many days are required in office? 3 days a week - Duration of assignment - 6 months - To be published on job boards from below onwards - The Role - The JML Solution Architect will be responsible for designing and implementing a solution to manage the access rights of their employees and stakeholders more efficiently and securely. The Joiner, Mover, and Leaver (JML) process has emerged as a pivotal framework within Identity & Access Management (IAM) to tackle this challenge head-on. It encompasses a comprehensive approach to managing user access throughout their lifecycle within an organization. This solution will integrate multiple data sources, automate workflows, and provide valuable insights to inf
        Role/Job title - Work Location - Wokingham - Role type - Permanent/Fixed Term/ Contracting - Contracting - Mode of working Hybrid /office based - Hybrid - If Hybrid, how many days are required in office? 3 days a week - Duration of assignment - 6 months - To be published on job boards from below onwards - The Role - The JML Solution Architect will be responsible for designing and implementing a solution to manage the access rights of their employees and stakeholders more efficiently and securely. The Joiner, Mover, and Leaver (JML) process has emerged as a pivotal framework within Identity & Access Management (IAM) to tackle this challenge head-on. It encompasses a comprehensive approach to managing user access throughout their lifecycle within an organization. This solution will integrate multiple data sources, automate workflows, and provide valuable insights to inf
        more
        NEW

        C# Engineer (Blazor Experience)

        Hays
        MK1, Milton Keynes
        £350.0 - £400.0 per day + £350 - 400 per day Outside IR35
        Role OverviewOur client based in Milton Keynes is looking for a passionate and skilled C# Engineer with proven experience in Blazor to join their growing development team. This is a fantastic opportunity to work on high-performance web applications in a collaborative and innovative environment. You'll be working closely with a talented team of developers, designers, and product managers to deliver cutting-edge solutions that drive real value. Responsibilities * Build and maintain interactive, scalable web applications using Blazor and .NET technologies. * Collaborate with cross-functional teams to define, design, and implement new features. * Ensure code quality through code reviews, unit testing, and adherence to best practices. * Troubleshoot and resolve issues across the full stack. * Contribute to technical discussions and share knowledge with the wider team.
        Role OverviewOur client based in Milton Keynes is looking for a passionate and skilled C# Engineer with proven experience in Blazor to join their growing development team. This is a fantastic opportunity to work on high-performance web applications in a collaborative and innovative environment. You'll be working closely with a talented team of developers, designers, and product managers to deliver cutting-edge solutions that drive real value. Responsibilities * Build and maintain interactive, scalable web applications using Blazor and .NET technologies. * Collaborate with cross-functional teams to define, design, and implement new features. * Ensure code quality through code reviews, unit testing, and adherence to best practices. * Troubleshoot and resolve issues across the full stack. * Contribute to technical discussions and share knowledge with the wider team.
        more
        NEW
        HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
        HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
        more
        NEW
        Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
        Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
        more
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        What is the average salary for API in London?

        Average salary per year
        £72,499

        The average salary for a API in London is £72,499. API in London salaries range from £62,499 to £87,499.

        Frequently Asked Questions

        How many contract API jobs are there in London?
        There are 167 contract API jobs within 20 miles of London available on CWJobs right now.

        Where in London are these contract jobs?
        You can find contract jobs in City of London, Central London, East London.

        What other similar jobs are there to contract API jobs in London?
        As well as contract API jobs in London, you can find contract Angular, IT, Software Development, amongst many others.