57 api developer jobs found in London

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...

Role: Salesforce Solution Architect Location: London, UK Is it Permanent / Contract: FTC for 12months or contract inside IR35 Rate/Salary: Submit at best rate in the market; lowest rate will be considered first. Is it Onsite/Remote/Hybrid: 4 days per week from office Role Overview We are seeking an experienced Salesforce Solution Architect to provide architectural leadership within Agile Scrum teams delivering enterprise-scale solutions on the Salesforce platform. This role focuses on translating business requirements into scalable, secure, and maintainable technical solutions aligned with Salesforce best practices. Working closely with Product Owners, Business Analysts, Developers, and key stakeholders, you will shape solution design, guide technical delivery, and ensure optimal use of Salesforce capabilities. You will champion the “art of the possible” within Salesforce, prioritising out-of-the-box functionality while ensuring...

About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...

About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid - 3 days in the office) About the role: We are seeking a highly experienced (10+ years ) Java Full-Stack Lead Developer with strong system architecture expertise to lead the design and delivery of scalable, distributed systems. This is a hands-on leadership role where you will define architecture, guide a globally distributed engineering team, and ensure high standards in both Back End and Front End development. Key Responsibilities Lead the architecture design of complex, scalable and high-availability systems Make critical decisions on system design, tech stack, and trade-offs Drive end-to-end development across Back End and Front End...

Job Information Date Opened 24/03/2026 About Us We provide end-to-end IT solutions and services including Applications services, Data & Analytics services, AI/ML Technologies and Professional services in the UK and EU market.    Job Description Role: Salesforce Solution Architect Location: London, UK Is it Permanent / Contract: FTC for 12months or contract inside IR35 Rate/Salary: Submit at best rate in the market; lowest rate will be considered first. Is it Onsite/Remote/Hybrid: 4 days per week from office Role Overview We are seeking an experienced Salesforce Solution Architect to provide architectural leadership within Agile Scrum teams delivering enterprise-scale solutions on the Salesforce platform. This role focuses on translating business requirements into scalable, secure, and maintainable technical solutions aligned with Salesforce best practices. Working closely with Product Owners,...

About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...

About IconicShift IconicShift AI is building a platform that turns founder intent into usable strategic outputs — clear strategies, investor-grade pitches, and practical roadmaps. It is based on the experience of Mike Harris, founding CEO of First Direct (the world’s first telephone bank), founding CEO of Egg (the world’s first internet bank), and CEO of Mercury Communications (that created some of the UK’s first mobile and cable networks). Most founders don’t fail because they lack ideas or options. They fail because their thinking drifts and they can’t afford the experienced support they need. Their story changes, priorities multiply, and the business loses its single direction. Most AI approaches just help them fail faster by accelerating rushed decisions. IconicShift works by creating a single source of strategic truth, where every decision is tracked and held to account. It refuses to move forward without explicit acceptance of core strategic bets, ensuring...

About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...

£35 per Hour London WC1V In-House 16–24 Hours per Week Sunny Art Centre is seeking a Mid–Senior Full-Stack WordPress Developer to join our in-house creative and technical team on a part-time freelance basis . This role is ideal for an experienced developer who enjoys working in a creative arts environment and wants to take long-term ownership of a high-profile cultural website. You will work from our open-plan gallery and studio space in central London (WC1V) , surrounded by an exceptional collection of Old Master artworks from both Western and Eastern traditions. The Role You will be responsible for the ongoing development, maintenance, performance, security, and scalability of Sunny Art Centre’s official WordPress website. This includes both front-end and back-end development , plugin and theme management, staging workflows, third-party integrations, and performance optimisation. This is a hands-on,...

About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid - 3 days in the office) About the role: We are seeking a highly experienced Senior Java Developer with over 10 years of hands-on Java development experience and extensive exposure to AI/ML-driven systems . The ideal candidate will design, build, and scale enterprise-grade applications while integrating modern AI capabilities such as machine learning models, generative AI, and intelligent automation into Back End systems. Key Responsibilities Design, develop, and maintain high-performance, scalable Java applications using modern frameworks. Architect and implement AI-enabled solutions , integrating ML/AI models into Java-based platforms....

About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid - 3 days in the office) About the role: We are seeking a highly experienced Senior Java Developer with over 10 years of hands-on Java development experience and extensive exposure to AI/ML-driven systems . The ideal candidate will design, build, and scale enterprise-grade applications while integrating modern AI capabilities such as machine learning models, generative AI, and intelligent automation into Back End systems. Key Responsibilities Design, develop, and maintain high-performance, scalable Java applications using modern frameworks. Architect and implement AI-enabled solutions , integrating ML/AI models into Java-based platforms....

Description Future Works is searching for a results-driven, AI-Enabled Fullstack Engineer with strong end-to-end experience building custom software solutions. In this role, you will own the development and delivery of scalable, production-grade applications, from architecture through deployment, ensuring solutions are aligned with client requirements and business objectives. Working within an agentic engineering environment, you will collaborate closely with product managers, designers, and stakeholders to translate business goals into robust technical implementations. By leveraging modern AI-assisted development tools, you will increase the speed and quality of delivery while maintaining strong engineering standards and architectural discipline. What You’ll Do Design and build production-grade applications with React and Next.js Translate product and client requirements into structured implementation plans Use AI tools (e.g., Cursor, Claude Code,...

About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps (at least 4 solid live apps). Proficient in...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Quality Assurance Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time role,...

Senior Automation Quality Engineer - Contract Working at CreateFuture CreateFuture  is an  AI-native consulting partner  where people do work that matters and are supported to do it well. We work alongside organisations such as PayPal, adidas, NatWest, FanDuel and Money Saving Expert, building digital products and services that make a difference  while always putting people first. We’re a team of creators. We write code, shape delivery, build go-to-market strategies, develop AI solutions and create the practices that support our people. We work side by side with our clients, challenging what’s not working and helping them to build the future. Our commitment to craft, quality, and culture has helped us scale to over 600 people in just a few years. CreateFuture is a  Great Place to Work-Certified™ company  and has won Best Workplaces UK multiple years in a row. Join us on our journey. Let’s create tomorrow,...

  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...

  Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...

Python Platform Engineer (Contract) We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve.  Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role The Storage Engineering team manages hundreds of petabytes across VAST, PowerScale, ECS, Rubrik, Alletra, Pure and a custom Tier Zero platform. The current operational tooling is a patchwork of GitOps workflows and Jenkins pipelines. We're...

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...

500-550 Outside IR 35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Scrumconnect is a trusted digital delivery partner to UK government departments and public sector bodies. We specialise in building user-centred digital services that improve lives. Our multidisciplinary teams bring together experienced technologists, designers, researchers, and strategists to solve complex challenges and drive meaningful impact in the public sector. Role Overview We are looking for an experienced Solution Architect to lead the design and delivery of digital case management and dispute resolution platforms. You will play a key role in shaping cloud-native architectures, enabling AI automation, and driving compliance within government frameworks. The ideal candidate brings deep expertise in solution architecture within the public or legal sector...