126 to 132 of 132 API Design Jobs in London

Have deep familiarity with Python data ecosystem Understanding of Jupyter notebooks Exposure to machine learning libraries like PyTorch, XGBoost and JAX Understanding of crypto or traditional financial markets Strong API design and documentation skills What do you get in return? Up to 250k base (depending on experience) 3 days in their new central London office Pension scheme More ❯

Have deep familiarity with Python data ecosystem Understanding of Jupyter notebooks Exposure to machine learning libraries like PyTorch, XGBoost and JAX Understanding of crypto or traditional financial markets Strong API design and documentation skills What do you get in return? Up to £250k base (depending on experience) 3 days in their new central London office Pension scheme More ❯

fast-moving environment. Your Skills and Experience 6+ years of experience in backend systems, with 1–3 years in engineering management or strong technical leadership roles Proven ability to design, build, and scale platform systems, owning complex projects from architecture to production Strong experience with cloud-based distributed systems, including architectural decision-making, deployment strategies, and operational excellence Advanced … backend development skills with an emphasis on API design, scalability, observability, and monitoring Experience mentoring engineers and promoting high technical standards within fast-growing teams Excellent communication skills with the ability to collaborate across engineering, product, and cross-functional groups Interest in, or exposure to, ML model serving, GPU-based infrastructure, or ML platform tooling (preferred but not More ❯

fast-moving environment. Your Skills and Experience 6+ years of experience in backend systems, with 1–3 years in engineering management or strong technical leadership roles Proven ability to design, build, and scale platform systems, owning complex projects from architecture to production Strong experience with cloud-based distributed systems, including architectural decision-making, deployment strategies, and operational excellence Advanced … backend development skills with an emphasis on API design, scalability, observability, and monitoring Experience mentoring engineers and promoting high technical standards within fast-growing teams Excellent communication skills with the ability to collaborate across engineering, product, and cross-functional groups Interest in, or exposure to, ML model serving, GPU-based infrastructure, or ML platform tooling (preferred but not More ❯

Stack Software Engineer to join a leading global investment management firm in London. Paying up to 120k plus bonus per annum, you will contribute to the development, optimisation, and design of front-office applications, collaborating with portfolio managers and product owners to create innovative and high-performance solutions. As a Senior Full Stack Software Engineer, you will play a … React) with a focus on UI/UX. Proven backend expertise, particularly with Java (Python, Node.js a plus), and experience building distributed microservices-based architectures. Strong knowledge of system design principles, scalable architecture patterns, and API design. Hands-on experience with relational (Postgres, MySQL) and NoSQL (DynamoDB) databases. Proficiency in cloud platforms (AWS, Azure, or GCP). Experience More ❯

Lead Software Engineer – Azure/.NET Remote/London (occasional office visits) £Competitive + 20% bonus + excellent benefits Azure, C#, .NET, API A Lead Software Engineer with strong experience in Azure and C#/.NET is required by a global, prestigious luxury brand. This is a hands-on leadership role where you will translate architectural vision into high … performance, enterprise-grade solutions. Working closely with the Global Head of Engineering and a talented global team of developers and architects, you will plan, design, and deliver scalable, secure, and automated cloud platforms within Microsoft Azure. The organisation has beautiful offices in the West End, with a requirement to attend approximately once a fortnight. Key Responsibilities: Design and … deliver high-performance, public-facing REST APIs and system integrations within a modern Azure environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native solutions aligned with architectural best practices. Champion DevOps More ❯

Technical Business Analyst - London/Remote (Technical Business Analyst, Technical BA, Business Analyst, BA, Technical Analyst, Systems Analyst, Solutions Architect, API Designers, Systems Analysts, RESTful APIs, Web APIs, JIRA, Confluence, user stories, JSON, Open API Specification, Swagger, HTTP, Agile, SQL) Our client is an exciting and cutting-edge fintech giant with a global presence. They have been a … their worldwide client base has never been stronger, with significant growth in the last 12 months. They are looking for a Technical Business Analyst with a background designing RESTful API services in fast-paced development teams, to work on consulting projects and help to align information technology with business operations and processes. We are seeking an Technical Business Analyst … Restful APIs, data models and event-driven processes for development teams. You will also need to be comfortable in HTTP, JIRA/Confluence, user stories, JSON Schema and Open API Specification (Swagger). Excellent Agile and SQL is expected, as is experience in Postman, BPMN and Gherkin. Exceptional communication and interpersonal skills are a must, as is the ability More ❯