Jobs for api developer at London

Job DescriptionImmediate need API developer in London UK - Contract opportunity initally for 6 months

Role Summary :We are seeking a Java API Developer to join our Digital Asset development team. This is a hands-on software engineering role responsible for designing, developing, testing, and supporting RESTful APIs and backend services in a financial services environment. The role contributes to building reliable, secure, and well-documented services that...

Role Summary :We are seeking a Java API Developer to join our Digital Asset development team. This is a hands-on software engineering role responsible for designing, developing, testing, and supporting RESTful APIs and backend services in a financial services environment. The role contributes to building reliable, secure, and well-documented services that...

Job DescriptionRole Summary :We are seeking an experienced Java API Developer to join our Digital Asset development team. This is a hands‑on engineering role responsible for building and operating secure, resilient API services that power institutional digital asset capabilities—spanning digital custody, tokenization enablement, digital transfer agency,...

Job DescriptionRole Summary :We are seeking an experienced Java API Developer to join our Digital Asset development team. This is a hands‑on engineering role responsible for building and operating secure, resilient API services that power institutional digital asset capabilities—spanning digital custody, tokenization enablement, digital transfer agency,...

C# API Developer65,000 Plus BonusHome work and flex work encouragedQuant Capital is urgently looking for a C# .NET Developer to join our high profile client.Our client is the world leader in Market data management systems, with clients globally such as most of the major investment banks. Their team in Tonbridge is at 63 and rapidly expanding. As a developer...

Java Developer / Backend Software Engineer (Kafka API) London / WFH to 90kAre you a Java technologist seeking a role where you can work on ground breaking technology, continually learning and progressing your career?You could be joining a global technology consultancy.What's in it for you:Salary to 90kHybrid working (x2 days WFH per week)Pension, Life...

Senior Full Stack Engineer / Developer (TypeScript React API Rust) London onsite to £120kOpportunity for a Senior / Founding Full Stack Developer to join a fast growing sports technology business as it establishes its new UK operation.The company sits at the intersection of sports, data, digital insights and betting, working across major US sports including...

Our Financial Services Client is looking for a Senior Platform TECH LEAD (Temenos/T24) with APIs experience to develop, and implement software/system solutions for improving the functionality of core banking applications and services. Must Have:Experience building and consuming APIs, working with relational databases, and what it takes to run code in a...

Our financial services client is seeking a ServiceNow Developer to design and implement ServiceNow and AI-enabled solutions using workflow automation, integrations, APIs, and enterprise application developmentJoin a banking environment delivering ServiceNow platform enhancements and AI-enabled automation initiatives supporting enterprise service delivery....

About Gigs At Gigs, we're building the operating system for mobile services—a platform that lets tech companies embed global connectivity into their products effortlessly. Just as Stripe lets any business add a payment button in seconds, Gigs empowers platforms to weave in connectivity—bridging the traditional world of telecom with modern tech. From...

**Senior Full Stack Engineer / Developer (TypeScript React API Rust) London onsite to £120k** Opportunity for a Senior / Founding Full Stack Developer to join a fast growing sports technology business as it establishes its new UK operation. The company sits at the intersection of sports, data, digital insights and betting, working across major US sports...

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure....

Job SummaryIs your CV ready If so, and you are confident this is the role for you, make sure to apply asap.We are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API...

Job Summary We are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API lifecycle processes, and driving the adoption of best practices across integration and middleware...

About 9fin9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion.Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis,...

Meet DeepLDeepL is a global AI product and research company focused on building secure, intelligent solutions to complex business problems. Over 200,000 business customers and millions of individuals across 228 global markets today trust DeepL's Language AI platform for human-like translation, improved writing and real-time voice translation.Founded in 2017...

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure....

Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. Founded in 2017, the company is headquartered in London, with offices and teams across Europe and the US. As AI continues to shape the way we live and work, Synthesia develops products to enhance visual communication and enterprise skill development,...

Job SummaryWe are seeking an experienced Kong API Gateway Specialist to lead the development, implementation, and governance of our enterprise API ecosystem. This role will be responsible for establishing API governance standards, designing and managing API lifecycle processes, and driving the adoption of best practices across integration and middleware...