62 api developer jobs found in London

Azure Cloud Developer Contract 3 months + Azure Cloud Developer Contract 3 months + Role type: Contract Location: UK, London, Remote Preferred start date: ASAP LIFE AS A SATALIAN As an organisation, we push the boundaries of data science, optimisation and artificial intelligence to solve the most complex problems in industry. Satalia, a WPP Company, is a community of individuals devoted to working on diverse and challenging projects, allowing you to flex your technical skills whilst working with a tight knit team of high performing colleagues. Led by our founder (who is also WPP’s Chief AI Officer), Satalia’s ambition is to become a decentralised organisation of the future. Today this involves developing tools and processes to liberate and automate manual repetitive tasks, with a focus on freedom, transparency and trust. At the core of our thinking is an approach to wellbeing and inclusivity. We unpack human behaviour and unpick prejudice...

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...

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 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...

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 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....

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...

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....

Job Title: EUX / M365 Technical Lead – AI & Automation Location: Victoria, London (SW1E) Work Type: Hybrid – minimum 3 days onsite Contract: Initial 6-month contract (likely extension) Day Rate: £500 per day IR35: Inside IR35 Role Purpose We are seeking an experienced EUX / M365 Technical Lead to join a large enterprise environment undergoing a modern workplace transformation. This role will focus on designing, delivering, and evolving the organisation’s End User Experience using the Microsoft ecosystem. You will provide deep technical leadership across Microsoft 365, Entra ID, Azure and modern endpoint management while also enabling AI-driven productivity improvements through Microsoft Copilot and automation technologies. Operating as a senior technical authority, you will help shape strategy, architecture and delivery for the modern workplace platform. The role requires a hands-on technical leader who can translate...

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...

Backend Developer - Web/Game Infrastructure (Contract) PRELOADED Contract: (Hybrid/Remote) Overview We’re seeking a seasoned Backend Developer with a proven track record in building scalable and robust architectures, and an instinctive understanding of how to deliver seamless digital experiences. You will work closely with the game team and technical leads to create and explore new and exciting backend services, working on groundbreaking projects with cutting-edge technologies. Specifically, you will be implementing and optimising microservices for a high-traffic, digital platform. Key Responsibilities Work closely with the Technical team to design and develop scalable and robust microservices. Collaborate with the wider technical teams/ partners to design and develop data models, APIs, and integration patterns. Delivering high-performance, secure, and maintainable backend services through technical innovation, creative thinking, and efficient...

Python Developer Number Of Vacancies: 1 Inside IR35 – 6 Months Contract (With likely extension) Day Rate: As Per Market Rate Location: Central London Hybrid: 2 Days On‑Site per Week Note: Must have a valid Right to Work in the UK — no visa sponsorship available.   Overview We’re looking for a highly skilled Python Developer to join a growing engineering team. This role is ideal for someone who thrives in modern cloud‑native environments, enjoys building clean and scalable backend systems, and is comfortable working in a hybrid setup in Central London. You’ll be responsible for designing, developing, and maintaining backend services, APIs, and cloud‑based components that support a range of internal and customer‑facing applications. The ideal candidate brings strong engineering fundamentals, hands‑on cloud experience, and a passion for building reliable, well‑structured systems.  ...

Job Title: Data Warehouse Engineer (SQL / Azure) Location: Central London, 80 Fenchurch Street, 2 days per week Contract: 6 Months   Key Responsibilities   Design, build, and optimise SQL-based data warehouse solutions supporting underwriting, claims, actuarial, exposure management, and regulatory reporting. Develop robust ETL/ELT pipelines using tools such as SSIS, Azure Data Factory (ADF), and Databricks. Implement dimensional modelling (Kimball / star schema) for analytical workloads. Integrate data from internal and external London Market sources including Lloyd’s, DXC, TPAs, and brokers. Build automated data quality checks, lineage tracking, and controlled data releases. Collaborate with Product Owners, Underwriters, Actuaries, BI teams, and IT to translate business requirements into technical specifications. Support migration of legacy SQL systems into Azure cloud environments, enabling self-service analytics...