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        27 Contract API jobs in Mayfair + 20 miles

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        Advanced Software Engineer (Graphics)

        Sports Interactive Ltd
        London
        Competitive
        Job Title: Advanced Software Engineer Team: Graphics Reporting into: Lead Software Engineer (Graphics) Hybrid working/Remote possibility Studio Overview We are Sports Interactive The gaming studio behind: Football Manager. Founded in 1994, Sports Interactive became a wholly owned subsidiary of SEGA Europe in 2006. Based at the Here East technology hub in Stratford, East London, the SI team continues to expand as we bring our titles to an ever-growing audience across an increasing variety of platforms. To support our growth, we welcome the opportunity to connect with passionate people with the drive to match our ambitions and initiative to realise your individual potential. Position Overview Continually improving the visual quality and performance of Football Manager is one of our main goals, and we are looking for an experienced, passionate graphics software engineer
        Job Title: Advanced Software Engineer Team: Graphics Reporting into: Lead Software Engineer (Graphics) Hybrid working/Remote possibility Studio Overview We are Sports Interactive The gaming studio behind: Football Manager. Founded in 1994, Sports Interactive became a wholly owned subsidiary of SEGA Europe in 2006. Based at the Here East technology hub in Stratford, East London, the SI team continues to expand as we bring our titles to an ever-growing audience across an increasing variety of platforms. To support our growth, we welcome the opportunity to connect with passionate people with the drive to match our ambitions and initiative to realise your individual potential. Position Overview Continually improving the visual quality and performance of Football Manager is one of our main goals, and we are looking for an experienced, passionate graphics software engineer
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        Who We Are - At Kyndryl, we design, build, manage and modernize the mission-critical technology systems that the world depends on every day. So why work at Kyndryl? We are always moving forward always pushing ourselves to go further in our efforts to build a more equitable, inclusive world for our employees, our customers and our communities. The Role - Location: Remote-first (UK-based role with global customer reach: UK, US, Japan, MEA, and beyond) Architect and advance Agentic AI with a team that's setting the pace for the industry. We're solving real-world problems at massive scale powered by creativity, precision, and a shared obsession with whats next. Youll be part of a team shaping the future of Agentic AI - architecting and scaling a next-gen open-source framework that powers autonomous systems across industries. We're not just talking innovation - we're build
        Who We Are - At Kyndryl, we design, build, manage and modernize the mission-critical technology systems that the world depends on every day. So why work at Kyndryl? We are always moving forward always pushing ourselves to go further in our efforts to build a more equitable, inclusive world for our employees, our customers and our communities. The Role - Location: Remote-first (UK-based role with global customer reach: UK, US, Japan, MEA, and beyond) Architect and advance Agentic AI with a team that's setting the pace for the industry. We're solving real-world problems at massive scale powered by creativity, precision, and a shared obsession with whats next. Youll be part of a team shaping the future of Agentic AI - architecting and scaling a next-gen open-source framework that powers autonomous systems across industries. We're not just talking innovation - we're build
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        Rayo, part of the UBDS group, is seeking a Full-Stack Developer to contribute to the development and support of cloud-native applications deployed on Amazon Web Services (AWS). The successful candidate will work across the full software development lifecycle, combining solid Java/Spring Boot back-end development with modern front-end skills using frameworks such as React or Angular. The role offers opportunities to support, design, and build scalable and secure solutions for high-impact public sector programmes. This position is suitable for candidates with foundational experience in full-stack development, as well as those with deeper technical capability looking to further progress within an Agile delivery environment. * Design, develop, and maintain scalable full-stack solutions hosted on AWS. * Build and integrate RESTful APIs using Java and Spring Boot.
        Rayo, part of the UBDS group, is seeking a Full-Stack Developer to contribute to the development and support of cloud-native applications deployed on Amazon Web Services (AWS). The successful candidate will work across the full software development lifecycle, combining solid Java/Spring Boot back-end development with modern front-end skills using frameworks such as React or Angular. The role offers opportunities to support, design, and build scalable and secure solutions for high-impact public sector programmes. This position is suitable for candidates with foundational experience in full-stack development, as well as those with deeper technical capability looking to further progress within an Agile delivery environment. * Design, develop, and maintain scalable full-stack solutions hosted on AWS. * Build and integrate RESTful APIs using Java and Spring Boot.
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        About Quidax - Quidax is where money meets limitless possibilities. Were making it super easy for individuals, businesses, and fintechs in Africa to access crypto. Our goal? Providing real value for our customers today while shaping the future of money. About the Role - Were looking for a Senior / Staff Android Engineer whos obsessed with building sleek, reliable Android apps that make crypto simple and seamless. Youll be the tech glue holding complex mobile projects together, leading architecture and mentorship, and pushing our mobile platform into its next evolution. If you live for clean code, smooth user experiences, and high-impact work, keep reading. What Youll Be Owning - Drive Mobile Engineering Excellence * In your first 90 days: Own and optimize our Android apps architecturemake it scalable, fast, and future-proof.
        About Quidax - Quidax is where money meets limitless possibilities. Were making it super easy for individuals, businesses, and fintechs in Africa to access crypto. Our goal? Providing real value for our customers today while shaping the future of money. About the Role - Were looking for a Senior / Staff Android Engineer whos obsessed with building sleek, reliable Android apps that make crypto simple and seamless. Youll be the tech glue holding complex mobile projects together, leading architecture and mentorship, and pushing our mobile platform into its next evolution. If you live for clean code, smooth user experiences, and high-impact work, keep reading. What Youll Be Owning - Drive Mobile Engineering Excellence * In your first 90 days: Own and optimize our Android apps architecturemake it scalable, fast, and future-proof.
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        Rayo, part of the UBDS group, is seeking a Back-End Developer to design, build, and maintain robust APIs and microservices for AWS-hosted platforms. This role involves delivering secure, scalable server-side solutions using Java and Spring Boot, with strong integration across AWS managed services. The successful candidate will also be expected to contribute to DevOps practices, performance optimisation, and team-wide code quality. This opportunity is suitable for experienced developers looking to deepen their technical leadership, as well as those progressing into a senior capacity with hands-on AWS delivery and solution design experience. * Develop and maintain back-end components using Java (11+) and Spring Boot. * Design and implement RESTful APIs and microservices within secure, cloud-native architectures.
        Rayo, part of the UBDS group, is seeking a Back-End Developer to design, build, and maintain robust APIs and microservices for AWS-hosted platforms. This role involves delivering secure, scalable server-side solutions using Java and Spring Boot, with strong integration across AWS managed services. The successful candidate will also be expected to contribute to DevOps practices, performance optimisation, and team-wide code quality. This opportunity is suitable for experienced developers looking to deepen their technical leadership, as well as those progressing into a senior capacity with hands-on AWS delivery and solution design experience. * Develop and maintain back-end components using Java (11+) and Spring Boot. * Design and implement RESTful APIs and microservices within secure, cloud-native architectures.
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        We're making the world of digital assets accessible and secure for everyone. Join the mission. Were the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. Were revolutionaries. Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction, to push the limits of whats possible. Thats what youll do here, in this playground of innovation. With leadership and trust, youll write the rules of new technology, and create products that redefine security in a digital age. To support our continued growth, were hiring an Engineering Manager to join the Wallet Experience business unit . Youll work directly with the Engineering Director and lead a high-performing team to deliver core features across our top-rated native applications.
        We're making the world of digital assets accessible and secure for everyone. Join the mission. Were the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. Were revolutionaries. Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction, to push the limits of whats possible. Thats what youll do here, in this playground of innovation. With leadership and trust, youll write the rules of new technology, and create products that redefine security in a digital age. To support our continued growth, were hiring an Engineering Manager to join the Wallet Experience business unit . Youll work directly with the Engineering Director and lead a high-performing team to deliver core features across our top-rated native applications.
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        Rayo, part of the UBDS group, is seeking a Front-End Developer to deliver high-performance, accessible, and maintainable user interfaces for AWS-hosted applications. The successful candidate will work closely with designers, back-end engineers, and DevOps teams to build responsive and scalable front-end solutions. This role is suited to developers with solid experience in modern JavaScript frameworks and a keen understanding of front-end performance and security principles, as well as those ready to provide architectural input and mentor junior colleagues. This opportunity offers a range of responsibilities suitable for both experienced developers and those seeking to grow into senior technical leadership roles within the front-end space. * Build and maintain robust, user-centred front-end applications using React or Angular.
        Rayo, part of the UBDS group, is seeking a Front-End Developer to deliver high-performance, accessible, and maintainable user interfaces for AWS-hosted applications. The successful candidate will work closely with designers, back-end engineers, and DevOps teams to build responsive and scalable front-end solutions. This role is suited to developers with solid experience in modern JavaScript frameworks and a keen understanding of front-end performance and security principles, as well as those ready to provide architectural input and mentor junior colleagues. This opportunity offers a range of responsibilities suitable for both experienced developers and those seeking to grow into senior technical leadership roles within the front-end space. * Build and maintain robust, user-centred front-end applications using React or Angular.
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        AI Engineer

        Daily Mail & General Trust T/A DMG media
        London
        Competitive
        Location: dmg::media HQ - High Street Kensington, London, W8 - Position: Permanent - About dmg::media - dmg media maintains an unwavering commitment to uncovering the stories that matter most. Its brands Daily Mail, The Mail on Sunday, MailOnline, Mail+, Metro, The i Paper and New Scientist reach more than 9 million people daily in the UK. Globally, dmg media's brands reach 160 million unique browsers every month across its domains and apps. Its global newsroom of journalists, formidable story-getting power, and breadth of content formats, delivers highly engaging, trusted content to loyal and new audiences, 24 hours a day, seven days a week. The Mail brand reaches three in five Brits every month and is officially the best-read, most recognised, most engaged newsbrand in the country. It is the largest news publisher on TikTok with over 21 million total followers and n
        Location: dmg::media HQ - High Street Kensington, London, W8 - Position: Permanent - About dmg::media - dmg media maintains an unwavering commitment to uncovering the stories that matter most. Its brands Daily Mail, The Mail on Sunday, MailOnline, Mail+, Metro, The i Paper and New Scientist reach more than 9 million people daily in the UK. Globally, dmg media's brands reach 160 million unique browsers every month across its domains and apps. Its global newsroom of journalists, formidable story-getting power, and breadth of content formats, delivers highly engaging, trusted content to loyal and new audiences, 24 hours a day, seven days a week. The Mail brand reaches three in five Brits every month and is officially the best-read, most recognised, most engaged newsbrand in the country. It is the largest news publisher on TikTok with over 21 million total followers and n
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        Company Description - Why Babble? Babble is a Customer Experience-led growth business. As the ultimate Trusted Advisor for cloud-based technologies, we specialize in empowering businesses with the best solutions from the world's leading providers. * Microsoft Modern Work * Cybersecurity * Contact Centre Technology * Mobile Solutions * Communications & Connectivity - With nearly 15,000 customers, we're just scratching the surface of our potential. Many of our clients currently benefit from one or two of our technologies, presenting an incredible opportunity to introduce them to our full suite of market-leading solutions. Join us on this exciting journey and let's achieve greatness together! About Us | Leading UK Cloud Solutions Provider | Babble - Job Description - Join Our Dynamic Team as a Key Accounts - Contact Centre as a Service Support Engineer! Are you passionat
        Company Description - Why Babble? Babble is a Customer Experience-led growth business. As the ultimate Trusted Advisor for cloud-based technologies, we specialize in empowering businesses with the best solutions from the world's leading providers. * Microsoft Modern Work * Cybersecurity * Contact Centre Technology * Mobile Solutions * Communications & Connectivity - With nearly 15,000 customers, we're just scratching the surface of our potential. Many of our clients currently benefit from one or two of our technologies, presenting an incredible opportunity to introduce them to our full suite of market-leading solutions. Join us on this exciting journey and let's achieve greatness together! About Us | Leading UK Cloud Solutions Provider | Babble - Job Description - Join Our Dynamic Team as a Key Accounts - Contact Centre as a Service Support Engineer! Are you passionat
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        We offer a flexible working policy that empowers iManage employees to balance work and well-being. We encourage two days per week in-office collaboration, offering opportunities to learn from peers in person, while also providing the flexibility needed for a meaningful work-life balance. Being a Senior Technical Consultant at iManage means - You will be responsible for providing implementation expertise on our enterprise projects and initiatives. You will take responsibility for the technical delivery of our iManage products and provide high-value advice and guidance to our clients. You will collaborate closely with our clients and fellow team members to understand business processes and requirements to help ensure the delivery of successful, business critical solutions. You will be a subject matter expert and trusted advisor to our clients.
        We offer a flexible working policy that empowers iManage employees to balance work and well-being. We encourage two days per week in-office collaboration, offering opportunities to learn from peers in person, while also providing the flexibility needed for a meaningful work-life balance. Being a Senior Technical Consultant at iManage means - You will be responsible for providing implementation expertise on our enterprise projects and initiatives. You will take responsibility for the technical delivery of our iManage products and provide high-value advice and guidance to our clients. You will collaborate closely with our clients and fellow team members to understand business processes and requirements to help ensure the delivery of successful, business critical solutions. You will be a subject matter expert and trusted advisor to our clients.
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        Job title: Machine Learning Engineer - Location: London, Bristol, Edinburgh (including hybrid) Salary: £63,000 - £81,000 - Kaluza reimagines energy to bring net-zero within everyone's reach. The Kaluza Platform enables energy utilities to unlock the full value of a radically changing energy system and propel us to a future where renewable energy is sustainable, affordable and accessible for all. From automating and simplifying core operations including billing to create a lower-cost, higher-engagement experience, to optimising energy usage across smart devices in the home, we turn tough challenges into win-win-win outcomes for customers, suppliers and the energy system. At Kaluza we embrace a flexible, hybrid work model that balances autonomy with the power of in-person connection. Many of our teams find value in coming together regularly to collaborate, strengthen ..
        Job title: Machine Learning Engineer - Location: London, Bristol, Edinburgh (including hybrid) Salary: £63,000 - £81,000 - Kaluza reimagines energy to bring net-zero within everyone's reach. The Kaluza Platform enables energy utilities to unlock the full value of a radically changing energy system and propel us to a future where renewable energy is sustainable, affordable and accessible for all. From automating and simplifying core operations including billing to create a lower-cost, higher-engagement experience, to optimising energy usage across smart devices in the home, we turn tough challenges into win-win-win outcomes for customers, suppliers and the energy system. At Kaluza we embrace a flexible, hybrid work model that balances autonomy with the power of in-person connection. Many of our teams find value in coming together regularly to collaborate, strengthen ..
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        Software Engineer

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £45,000 - £55,000 a year
        A Full Stack Software Engineering role. A role that will build your technical capabilities, providing a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions and contributes to quality practices. Essential Skills & Experience * Strong Python Development Capability 3 years+ * 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 standards
        A Full Stack Software Engineering role. A role that will build your technical capabilities, providing a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA, DevOps, and fellow engineers, this role helps shape technical solutions and contributes to quality practices. Essential Skills & Experience * Strong Python Development Capability 3 years+ * 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 standards
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        Senior Software Engineer

        Gigaclear Ltd
        Abingdon, Oxfordshire
        £55,000 - £60,000 a year
        A role to put your Software Engineering problem solving skills to the test, translating complex technical concepts to cross-functional audiences. You will play a key role in delivering robust, secure, and scalable software systems. Working closely with Product, QA, and DevOps, you will balance hands-on development with architectural contribution, promote Agile best practices, and help raise the engineering bar through coaching, code quality, and continuous improvement initiatives. You will support the teams technical evolution while ensuring reliable product delivery aligned to business needs. * Strong Python Development Capability 5 years+ * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Passionate about building quality software * Experience of developing in Rust.
        A role to put your Software Engineering problem solving skills to the test, translating complex technical concepts to cross-functional audiences. You will play a key role in delivering robust, secure, and scalable software systems. Working closely with Product, QA, and DevOps, you will balance hands-on development with architectural contribution, promote Agile best practices, and help raise the engineering bar through coaching, code quality, and continuous improvement initiatives. You will support the teams technical evolution while ensuring reliable product delivery aligned to business needs. * Strong Python Development Capability 5 years+ * Experience implementing and integrating with REST APIs * SQL experience (preferably PostgreSQL and/or MySQL) * Passionate about building quality software * Experience of developing in Rust.
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        6 month outside IR35 contract - As part of our exciting growth journey, were expanding our Mobile Engineering team and are on the lookout for a talented Android Engineer to join us on a hybrid basis at our London office. This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. Youll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport. Youll bring technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones. Youll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide. Requirements
        6 month outside IR35 contract - As part of our exciting growth journey, were expanding our Mobile Engineering team and are on the lookout for a talented Android Engineer to join us on a hybrid basis at our London office. This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. Youll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport. Youll bring technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones. Youll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide. Requirements
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        At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
        At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
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        Experience in API testing (Postman, Swagger, REST API testing)
        Experience in API testing (Postman, Swagger, REST API testing)
        NEW
        The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
        The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
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        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
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        Frequently Asked Questions

        How many contract API jobs are there in Mayfair?
        There are 27 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 Millwall, Brentford End, Clerkenwell.

        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, Product Management, amongst many others.