15 of 15 Permanent API Design Jobs in Central London

core integration and technology platform, shaping and governing the foundational layer that connects systems, data, and services across the enterprise. Responsibilities Architecture Leadership & Design Define, own, and communicate the enterprise architecture of the Digital Backbone. Architect and lead the design, development, and deployment of APIs and integrations, ensuring … alignment with standards and strategic goals. Drive adoption of API‐first design principles and the APIOps methodology, including automation of API deployment and governance. Develop, maintain, and communicate key architecture artefacts such as policies, standards, principles, patterns, templates, and capability models. Manage Group Enterprise Architecture assets – application ...

great experience to delight our customers. Our goal is to enhance every traveler's experience and make it better! In this role, you will: Design, develop, and maintain high-throughput, low-latency distributed backend services that deliver efficient, optimal pricing solutions at scale. Implement robust caching mechanisms to enhance … application performance, reduce latency, and optimize resource utilization. Participate in system design, API design, and data modeling for scalable, reliable microservices. Contribute to technical documentation, detailed code reviews, and architecture discussions to ensure high-quality solutions. Analyze complex problems, break them down into manageable milestones, and collaborate ...

team? Hands-on experience in production environments as a Software Developer and DevOps/Platform Engineer Strong production experience with Python and software design patterns (SOLID, DRY) Expertise in AWS (or similar cloud providers), Containerization and Kubernetes Deep understanding of RESTful API or GraphQL API design ...

Ireland providing specialist services to a wide range of blue-chip clients. The role We are seeking technical polyglots who enjoy both technical architectural design, hands-on coding and peer reviews, though also like the idea of the equally important social/client-facing aspect of the role. … development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority (TDA) for delivery of technical stories and produce technical documentation artefacts to support the delivery process. Main Responsibilities Duties will include: The design ...

working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

working hours, patterns and locations to suit you and our business. About the Opportunity As a Principal Solutions Architect, you will specialise in the design, development and governance of integrated digital project controls environments across major capital programmes. This is not a general IT solutions architecture role. … required. Key Responsibilities Define enterprise aligned solution architectures for programme controls platforms covering cost, schedule, risk, performance reporting and data governance. Lead evaluation, selection, design and configuration of programme controls systems such as EcoSys, Oracle Primavera P6 and Unifier, Aconex, CDEs including SharePoint and ProjectWise, and related digital delivery ...

Role Overview ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands‐on delivery of a desktop platform automating and streamlining trading desk workflows. This is a high‐visibility player‐coach role that may evolve to include formal people management. Role Responsibilities … output. Own the technical direction of the ICRV greenfield project, developing high‐performance, scalable, and robust solutions from first principles through to production operation. Design for hard non‐functional requirements: latency and responsiveness budgets as acceptance criteria, crash containment, least‐privilege isolation between sub‐applications. Work effectively with ...

team that executes complex, multi-leg synthetic strategies on behalf of institutional clients.Role OverviewICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player-coach role: you will apply … C#/.NET (LTS): back-end services with ASP.NET Core.Experience designing and delivering event-driven, service-oriented back-end systems (message brokers, async workflows, API design) in a production trading environment.Experience building desktop applications that host web content (e.g., Electron, Tauri, or custom .NET host); comfortable with WebSocket ...

with delivery teams to guide implementation and resolve technical challenges. * Conduct architecture reviews for projects and change requests, validating alignment with EA standards. * Design end-to-end integration solutions across the firm's application estate (Aderant, iManage, Intapp, HubSpot). * Define API contracts, message schemas, and integration patterns … build vs buy decisions. * Conduct proof of concepts (POCs) and technical spikes to validate architectural approaches. Required Experience: * Experience in solution architecture, technical design, or senior development roles. * Strong experience designing integration solutions across enterprise applications. * Excellent knowledge of API design, messaging patterns, and integration architectures. * Experience ...

Expedia Group is seeking a Software Development Engineer II (Backend) to design, develop, and maintain high-throughput pricing services. You will implement caching, participate in API design, and collaborate with cross-functional teams to deliver scalable microservices. The role emphasizes experience with Java/Scala/Kotlin ...

Required Active UK SC Clearance (Mandatory — applications without this cannot be considered) Core Engineering: Strong backend development skills (Python, Go, or C++) with solid API design and data pipeline experience AI Tooling: Hands‐on experience integrating LLMs, handling vector databases, and building robust chunking/embedding strategies Secure ...

Associates is seeking an AI Integration Engineer with active UK SC clearance for a contract position in London. The role focuses on backend development, API design, and data pipelines, with hands-on work integrating LLMs and vector databases in secure, classified environments. You will work on self-hosted ...

technology organisation delivering mission-critical systems that support national security and help protect the UK. Working as part of empowered DevOps teams, you'll design, develop, deploy and maintain cloud-based applications and services, collaborating with engineers and end users to solve complex technical challenges. The Role … opportunity to work with cutting-edge cloud technologies, contribute to innovative solutions and continue developing your skills within a supportive engineering community. Key Responsibilities •Design, develop and maintain secure cloud solutions using AWS. •Build and support applications and services across AWS environments. •Work within agile DevOps teams to deliver ...

Role: We are seeking an experienced Full-Stack Engineer (5-7 years) to join a leading global financial institution in London. You will design, build, and maintain high-performance, cloud-native applications supporting critical financial operations. Key Responsibilities: Design and deliver end-to-end applications using Java (Spring … proficiency in Java, Spring Boot, and ReactJS . Hands-on experience with AWS, Kubernetes, and Kafka . Strong grasp of multithreading, microservices architecture, and API design. Financial services, Investment Banking, or Risk domain experience is highly advantageous. Ability to work from the London office 3 days per week . ...

setting architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance, and maintainability across Expedia Group’s travel platforms. Lead technical direction for multi-service … quality, and knowledge sharing. Safely integrate and operate AI/ML-enabled solutions that improve mobile user experiences and business outcomes. Collaborate with product, design, and engineering stakeholders to deliver innovative mobile features and drive technical strategy across the organization. Minimum Qualifications Bachelor’s degree in Computer Science ...