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        100 Contract API jobs in Mayfair + 20 miles

        647 exact matches jobs are outside your preferred location

        Product Security Engineer – Lead

        Smarsh
        London
        Competitive
        Strong understanding of identity & access management (OAuth, OIDC, SAML, JWT) and API security.
        Strong understanding of identity & access management (OAuth, OIDC, SAML, JWT) and API security.
        This role is ideal for someone with experience in platform or infrastructure product management, data-centric or API-first product development, and a strong understanding of developer and operator needs. * Proven experience as a Product Owner or Technical Product Manager for platform, data infrastructure, developer tooling, or API-based products .
        This role is ideal for someone with experience in platform or infrastructure product management, data-centric or API-first product development, and a strong understanding of developer and operator needs. * Proven experience as a Product Owner or Technical Product Manager for platform, data infrastructure, developer tooling, or API-based products .
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        This role involves creating high-quality documentation, including API integrations, and leveraging your expertise to guide projects to success. * Document and manage API requirements, ensuring alignment with REST/GraphQL principles and system capabilities. * Leverage knowledge of API principles (REST/GraphQL), web technologies (e.g., cookies, HTML, JSON), and authentication protocols (e.g., oAuth2, SAML). * Understanding of API principles such as REST / GraphQL
        This role involves creating high-quality documentation, including API integrations, and leveraging your expertise to guide projects to success. * Document and manage API requirements, ensuring alignment with REST/GraphQL principles and system capabilities. * Leverage knowledge of API principles (REST/GraphQL), web technologies (e.g., cookies, HTML, JSON), and authentication protocols (e.g., oAuth2, SAML). * Understanding of API principles such as REST / GraphQL
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        Typing is used within our Python stack to power automated documentation and API definitions * Have hands-on experience designing data flow through software, from persistent storage to API endpoints, while applying industry best practices for validation
        Typing is used within our Python stack to power automated documentation and API definitions * Have hands-on experience designing data flow through software, from persistent storage to API endpoints, while applying industry best practices for validation
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        In this critical role, you will be instrumental in driving the adoption, engagement, and growth of Smartsheet's developer platform and API capabilities. * Collaborate with cross-functional teams to develop and execute comprehensive go-to-market plans including customer communications for new API capabilities, SDKs, developer tools, and platform enhancements. * Clearly communicate technical details to customers regarding API changes, releases, and deprecations including writing release notes and collaborating on developer documentation and API guides.
        In this critical role, you will be instrumental in driving the adoption, engagement, and growth of Smartsheet's developer platform and API capabilities. * Collaborate with cross-functional teams to develop and execute comprehensive go-to-market plans including customer communications for new API capabilities, SDKs, developer tools, and platform enhancements. * Clearly communicate technical details to customers regarding API changes, releases, and deprecations including writing release notes and collaborating on developer documentation and API guides.
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        Software Solutions Specialist

        Linde Material Handling (UK) Ltd
        Basingstoke, Hampshire
        Competitive
        Experience in API integration (REST/SOAP) through ERP systems, IoT devices and or third-party logistics platforms. * API/Data Integration Accuracy: % of successful data exchanges between WMS and ERP/third-party systems without manual intervention.
        Experience in API integration (REST/SOAP) through ERP systems, IoT devices and or third-party logistics platforms. * API/Data Integration Accuracy: % of successful data exchanges between WMS and ERP/third-party systems without manual intervention.
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        Experience of technical areas and tooling when testing on mobile: Network tools, performance tools, analytics tools, API test tooling, automation frameworks, platform tools, storefront tools
        Experience of technical areas and tooling when testing on mobile: Network tools, performance tools, analytics tools, API test tooling, automation frameworks, platform tools, storefront tools
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        Create test automation frameworks for front and back-end applications at API, service, and UI levels * Experience with API testing (e.g., Postman, RestAssured)
        Create test automation frameworks for front and back-end applications at API, service, and UI levels * Experience with API testing (e.g., Postman, RestAssured)
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        Join Pigment: The AI Platform Redefining Business Planning - Pigment is the AI-powered business planning and performance management platform built for agility and scale. We connect people, data, and processes in one intuitive, feature-rich solution, empowering every teamfrom Finance to HRto build, adapt, and align strategic plans in real time. Founded in 2019, Pigment is one of the fastest-growing SaaS companies globally. Industry leaders like Unilever, Snowflake, Siemens, and DPD use Pigment daily to make more informed decisions and confidently navigate any scenario. With a team of 500+ across Paris, London, New York, San Francisco, and Toronto, we've raised nearly $400M from top-tier investors and were named a Visionary in the 2024 Gartner Magic Quadrant for Financial Planning Software. At Pigment, we take smart risks, celebrate bold ideas, and challenge the status
        Join Pigment: The AI Platform Redefining Business Planning - Pigment is the AI-powered business planning and performance management platform built for agility and scale. We connect people, data, and processes in one intuitive, feature-rich solution, empowering every teamfrom Finance to HRto build, adapt, and align strategic plans in real time. Founded in 2019, Pigment is one of the fastest-growing SaaS companies globally. Industry leaders like Unilever, Snowflake, Siemens, and DPD use Pigment daily to make more informed decisions and confidently navigate any scenario. With a team of 500+ across Paris, London, New York, San Francisco, and Toronto, we've raised nearly $400M from top-tier investors and were named a Visionary in the 2024 Gartner Magic Quadrant for Financial Planning Software. At Pigment, we take smart risks, celebrate bold ideas, and challenge the status
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        Software Development Lead

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £60,000 - £68,000 a year
        Help shape our technical vision and adapt solutions to meet changing business needs. A mix of hands-on development, leading, coaching and mentoring a team, whilst using your interpersonal skills to communicate with cross functional teams on architectural shaping and decision making. You will work closely and collaborate with Product Owners, Scrum Masters, Delivery Managers, QA, and DevOps to drive high-quality, secure, and performant code. You will uphold engineering standards, support team capability growth, and ensure sustainable delivery practices. * Python Development Capability * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security
        Help shape our technical vision and adapt solutions to meet changing business needs. A mix of hands-on development, leading, coaching and mentoring a team, whilst using your interpersonal skills to communicate with cross functional teams on architectural shaping and decision making. You will work closely and collaborate with Product Owners, Scrum Masters, Delivery Managers, QA, and DevOps to drive high-quality, secure, and performant code. You will uphold engineering standards, support team capability growth, and ensure sustainable delivery practices. * Python Development Capability * Experienced with front-end frameworks (React.js and Next.js) * Experience with TypeScript * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Experience with responsive web design * Understanding of SEO strategies and security
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        Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
        Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
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        NEW
        Serve as the primary technical contact for advanced issues related to software, product data feeds, API integrations, and FTP * Advanced expertise in REST and SOAP API integrations and troubleshooting
        Serve as the primary technical contact for advanced issues related to software, product data feeds, API integrations, and FTP * Advanced expertise in REST and SOAP API integrations and troubleshooting
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        We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses.
        We provide a comprehensive range of currency services and products, including our Currency Converter, Market Analysis, Currency Data API and quick, easy, secure Money Transfers for individuals and businesses.
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        Conduct different testing types and adapt them to the project need: functional testing, regression testing, API testing, integration testing, security testing, performance testing, contract testing. * Implement and maintain automated testing framework for UI, API and AI/ML solutions. * Proficiency in UI and API test automation tools like cypress, cucumber, postman, pytest.
        Conduct different testing types and adapt them to the project need: functional testing, regression testing, API testing, integration testing, security testing, performance testing, contract testing. * Implement and maintain automated testing framework for UI, API and AI/ML solutions. * Proficiency in UI and API test automation tools like cypress, cucumber, postman, pytest.
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        This includes content on product features, benefits, and use cases, as well as user and admin guides, API references, examples, and best practices. * Knowledge of API concepts and developer-first content (no coding required, but tech-savvy mindset a plus).
        This includes content on product features, benefits, and use cases, as well as user and admin guides, API references, examples, and best practices. * Knowledge of API concepts and developer-first content (no coding required, but tech-savvy mindset a plus).
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        Modern Solution Design Translate business needs into scalable, future-ready solutions using Microsoft 365, Power Platform, Dataverse, Microsoft Fabric, and Graph API. * Governance & Platform Maturity Support the implementation of governance frameworks for Power Platform and Microsoft 365, including environment strategy, security, lifecycle management, and API integration. * Familiarity with Microsoft Fabric and Graph API
        Modern Solution Design Translate business needs into scalable, future-ready solutions using Microsoft 365, Power Platform, Dataverse, Microsoft Fabric, and Graph API. * Governance & Platform Maturity Support the implementation of governance frameworks for Power Platform and Microsoft 365, including environment strategy, security, lifecycle management, and API integration. * Familiarity with Microsoft Fabric and Graph API
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        This includes native integrations with BI tools, CRMs, AI platforms, and LLMs, as well as expanding and owning our API platform. Own and evolve the GWI Data API by defining key use cases, prioritising the roadmap, maintaining comprehensive documentation, supporting partner integrations, and driving adoption across customers and third-party developers. API Scale Leadership - Proven track record building and scaling public APIs to drive $100 M+ in ARR, from roadmap through adoption and monetization. API Product Leadership - You own APIs end to end, from roadmap to developer experience, and know how to scale adoption and usage.
        This includes native integrations with BI tools, CRMs, AI platforms, and LLMs, as well as expanding and owning our API platform. Own and evolve the GWI Data API by defining key use cases, prioritising the roadmap, maintaining comprehensive documentation, supporting partner integrations, and driving adoption across customers and third-party developers. API Scale Leadership - Proven track record building and scaling public APIs to drive $100 M+ in ARR, from roadmap through adoption and monetization. API Product Leadership - You own APIs end to end, from roadmap to developer experience, and know how to scale adoption and usage.
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        NEW
        From refining API design to optimising performance and observability, youll be the driving force behind the systems that keep Onetrace running smoothly and growing fast. * RESTful API design and implementation
        From refining API design to optimising performance and observability, youll be the driving force behind the systems that keep Onetrace running smoothly and growing fast. * RESTful API design and implementation
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        Balance roadmap and service levels: Prioritise platform improvements, API consistency, reliability SLAs, and technical documentation to ensure smooth usage by other teams. * 4+ years in product management with a strong technical focus-ideally in infrastructure, platform, or API products.
        Balance roadmap and service levels: Prioritise platform improvements, API consistency, reliability SLAs, and technical documentation to ensure smooth usage by other teams. * 4+ years in product management with a strong technical focus-ideally in infrastructure, platform, or API products.
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        Frequently Asked Questions

        How many contract API jobs are there in Mayfair?
        There are 100 contract API jobs within 20 miles of Mayfair available on CWJobs right now.

        Where in Mayfair are these contract jobs?
        You can find contract jobs in Shadwell, The City, City (EC3), Frimley.

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