126 to 150 of 235 API Design Jobs in London

basis with development team, designers, copy writers and other IT teams. The role develops and presents recommendations from analysis of current solution. Assist in design peer reviews, code peer reviews, build and unit test functional enhancements. Identify areas for code refactoring. Review and contribute to development process and procedures … Defends a recommendation and can confidently support it. Strong organization, communication, and interpersonal skills. Ability to communicate with business and technical audiences and produce design documents suitable for multiple audience types, both client-facing and internal- Must be able to exhibit technical thought leadership and excellent problem solving ability ...

Production. The successful candidate will ensure that platforms and services are built consistent with industry methodology and standards, and be responsible for the design and solutions for the domain application stack, understanding application integration and E2E flow. They should also be comfortable communicating this at all levels, from senior … technical leadership Experience across the entire solutions development lifecycle from inception, through build to Production You'll appreciate and acknowledge the impact of system design decisions on scalability, resilience, and supportability Experience of API design and architecture patterns Exposure to modern application frameworks (Springboot, Java etc) Knowledge ...

Connect enterprise platforms, APIs, and data pipelines into resilient end-to-end business workflows. You will design and implement integrations between critical systems, with focus on reliability, observability, and long-term maintainability in complex client environments. 02 - RESPONSIBILITIES What You Will Own Core Responsibilities. Design integration architecture … API, event, and batch workflows. Implement secure data exchange between ERP, CRM, and line-of-business tools. Build error handling, retry strategies, and operational alerting. Document interface contracts and transformation logic clearly. Support testing, cutover planning, and go-live execution. Collaborate with client teams on dependency mapping and sequencing. ...

grow and make a difference in ways that matter to you.We are looking for a senior backend software engineer to join our core service API team within Investments Technology. Our team designs, builds and operates the core services and APIs that are used across Investments Tech applications, supporting portfolio … managers, analysts, and traders across Equity, Fixed Income and Multi-Asset. In this role you will design, develop, modify, adapt and implement short and long-term solutions that enhance and expand these shared services.Principal ResponsibilitiesDelivery:Delivering new core services and API capabilities, primarily in Java and C# ...

based workflow validation before changes hit production What We’re Looking For Strong backend engineering skills in Python, Go, or similar Solid understanding of API design, data modelling, and the tradeoffs in distributed systems (consistency, concurrency, fault tolerance) Experience with cloud infrastructure and deployment: containerisation, CI/ ...

Purpose Design, develop, test, release and support secure, reliable and maintainable software that delivers useful outcomes for 7IM, its clients and colleagues. Work across the full delivery lifecycle, using modern engineering practices and approved AI-assisted tools to improve speed and quality while retaining clear human ownership, review … with the team. Write clean, maintainable and well-tested code that follows 7IM architecture, security, engineering and data standards. Contribute to technical discovery and design, understanding the problem behind the request and making sensible trade-offs between user value, delivery speed, risk, cost and maintainability. Build automated tests ...

About the team: We're a small team that ships freuently and iterates on real partner feedback. Engineers own features from technical discovery and design through to production support. We work closely with our PM and designer to understand partner needs, and with adjacent teams (API Experience, Account … identity mapping between partner systems and Wise. • The communication layer services between Wise and partners, extending them to handle new case types and workflows. • API design for partner-facing endpoints. We care about consistency, documentation, and making them usable without hand-holding. • Work with FinCrime, Compliance ...

understand how they use the platform, debug their issues, and shape a roadmap that balances immediate needs with long-term architecture. You will: Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environments Ensure strong isolation, security … maintain a product roadmap for sandboxing, balancing immediate needs against long-term architectural investment Lead architecture reviews and own projects end-to-end, from design through deployment, in fast-paced cross-functional settings Ideally you'd have: 4+ years of experience building high-performance systems software, with meaningful time ...

putting carrier partners first, we are paving the way for better delivery experiences. LineTen is a new approach to delivery with a free carrier API and an operations management platform for shippers. We're building the first global data-driven last-mile network that has the potential to solve … encouraged, and outcomes matter more than activity. This is not a ticket-factory role: you'll be expected to think critically, challenge assumptions, design robust solutions, and take responsibility for their long-term success. You’ll work across backend services, distributed systems and frontend integrations, with a strong focus ...

Kubernetes-based multi-tenant infrastructure that powers customer projects at scale* Improving and extending the dynamic query builder that is the heart of our API generation engine: the core feature that turns database models into secure, production-ready REST APIs* Building and scaling platform services: authentication (Magic Link, OAuth … file storage and CDN delivery, full-text search, workflow automation engine, and Stripe payment integrations* PostgreSQL schema design, query optimisation, and database infrastructure (replication, backups, performance)* Developer experience tooling: improving how quickly new customers can get from signup to their first API call* Security architecture: row-level security ...

architecture of key strategic initiatives across Fourth. Working as an embedded member of delivery teams, you will provide hands-on architectural leadership, helping engineers design, build and evolve scalable, maintainable and resilient software solutions. You will apply Fourth's application architecture standards, patterns and engineering principles, while contributing … practical delivery experience. Produce architectural designs, decision records, and technical documentation that clearly communicate solution intent and support long-term maintainability. Participate in architecture, design, and code reviews, providing constructive feedback and helping ensure consistency with established architectural principles. Collaborate with business, product, engineering, and fellow architects to understand ...

within our team, you will shape solution designs that deliver real business value across major infrastructure programmes. Core Responsibilities Lead end-to-end solution design for complex data and AI projects, from initial discovery through to implementation planning. Architect tool-agnostic technical solutions that span the entire data lifecycle … including ingestion, storage, processing, analytics, and AI applications. Conduct requirements gathering and stakeholder workshops, translating business challenges into well-defined technical solutions. Design integration architectures that connect disparate systems, data sources, and platforms. Evaluate and recommend appropriate technologies across the data and AI landscape, balancing client constraints with best ...

colleagues' work. You'll share production support with your fellow senior engineer, so the platform never depends on one person. What you will do Design, build, test and maintain secure SaaS applications Develop and maintain APIs, databases and integrations with third-party systems Carry out code reviews and help … looking for A relevant degree or equivalent professional experience 5+ years' software development experience Experience with cloud platforms (AWS and/or Azure) Strong API design and development skills Solid database skills (relational and/or NoSQL) Experience with automated testing and secure-coding practices Nice to have ...

Development Life Cycle including Requirements Elicitation, Application Architecture definition and Design. You will play an important role in creating the Architecture and high-level design artifacts. You will also do technical feasibility and identify smart ways of completing client’s requirement. You will guide the team technically and work … Agile team Preferred Message-oriented-middleware (Kafka, AMQP, MQ, AMPS, etc.) experience Distributed systems experience Web Application development (JavaScript, AngularJS, Bootstrap, etc.) Rest API design and development DDD/CQRS/Event sourced systems experience Relevant industry (banking middle/back office) experience Experience in scripting languages (Bash ...

role As a Product Engineer at Encord, you\'ll be embedded at the core of our product — owning features end-to-end, from the API design and backend systems all the way through to the UI that annotation teams, ML engineers, and compliance officers use every day. … product and ship high-quality features at pace, maintaining strong CI/CD and testing practices throughout Work closely with customers, product, and design to understand problems deeply and deliver solutions that create real impact Contribute to shaping how the team works — our architecture decisions, engineering culture, and product ...

understand and do, bringing real-world context into every business decision. About the Role As a Senior Enterprise Product Engineer, you will design and deliver scalable Data & AI products that transform Xoople’s Earth data into enterprise-grade, analytics-ready solutions. You will combine large-scale data processing, machine … workloads, and enabling seamless integration of Earth data into enterprise environments. Flexible work model depending on location (Spain or the UK) Impact You Own Design and deliver scalable, high-performance Data & AI products and pipelines. Develop machine learning and statistical models on large-scale datasets to enable advanced analytics. ...

include: Engage in all phases of application development, with a focus on coding and debugging in alignment with security standards throughout the entire lifecycle Design, build, and maintain efficient, reusable, and reliable code/APIs to support applications both for web and mobile Collaborate regularly in a cross-functional … version control software such as GIT Knowledge of SOLID principles Knowledge of clean code practices Experience using web service protocols such as Rest, API design for extensibility and integration Experience debugging complex applications Experience with Agile development project management methodologies Database Development in SQL Server or NoSQL Databases ...

infrastructure will support authorisation with scoped short‐lived credentials. This is a hands‐on engineering role, securing Man's applications and services. Role Responsibilities Design, build and operate security platform services and APIs such as policy decision, just-in-time access and short‐lived credential issuance. Write and maintain … resource quota enforcement. Policy engines and workload identity (e.g., OPA/Rego, Kyverno, Cedar, OpenFGA, SPIFFE/SPIRE, Envoy/service mesh). API design (REST/gRPC) for internal platform consumers. Network security controls: WAFs, segmentation, TLS termination and egress filtering. Inclusion, Work-Life Balance and Benefits ...

interfaces used to plan and manage operations, review missions and work with the data captured in flight. You'll be solving problems such as: Design, build and ship full stack features in React and FastAPI, owning them from problem statement through to production and the feedback that comes back … experience and a track record of building high-quality production software. You'll bring: Strong React and modern TypeScript Strong Python , ideally FastAPI Good API design and relational data modelling Experience with asynchronous systems Experience with cloud infrastructure, containers, CI/CD and monitoring Experience building systems that ...

work at home 100% of the time.Your Role:Senior full stack engineering capability with a strong frontend foundationReactJS and TypeScriptStrong backend engineering mindset API design integration performance securityAIML engineering skills building and integrating AI driven features into products ideally with practical experience using modern model toolingDevOps capability … countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.Make it real | www.capgemini.com #J-18808-Ljbffr ...

Computer Science, Mathematics, Software Engineering, Physics, and Data Science. You write and review production-grade Python and SQL, and have strong command of REST API design and integrations. You excel at breaking down complex problems and making quick, well-informed decisions even under pressure. You build strong relationships ...

excellent opportunity for someone looking to work alongside experienced professionals on real, large-scale projects. Required Technical Skills Key Responsibilities: Supporting the design and documentation of scalable, secure, and maintainable solution architectures. Working with chief architects and senior engineers to clarify requirements and define solution scope. Translating business … Contributing to architecture documentation including system diagrams, data flows, and integration points. Assisting in defining non-functional requirements (performance, security, reliability, scalability). Supporting API design and integration planning across internal and third-party systems. Participating in cloud deployment planning across AWS, Azure, or GCP environments. Continuously learning ...

complex landscape, accelerating prototypes to production. You will collaborate with business teams, analysts, and architects; work with developers, designers, and IT peers; contribute to design and code reviews, API design, and unit testing, while pushing for scalable, maintainable software. #J-18808-Ljbffr ...

team in London. You will work with Solution Architects to implement AnyPoint platform-based integrations across on-premises and cloud systems, shaping API design and deployment strategies. The role emphasizes REST API development with RAML/OpenAPI, DataWeave transformations, and CI/CD deployment. Strong communication ...

defining the future product and platform experience, patterns, and contribution pathways that will enable federated scale over time. ML Engineers – Responsibilities & Skills Responsibilities Design and build MCP servers and tools that expose enterprise systems and workflows to AI agents. Implement Skills that orchestrate tools, data, and reasoning into repeatable … governed workflows. Contribute to the LSEG AI Assist agentic harness, including planning, tool‐calling, and orchestration logic. Build secure API wrappers where backend systems lack suitable authentication or entitlement models. Work closely with product teams in a “build for” capacity, transferring knowledge and establishing reusable patterns. Shape the developer ...