76 to 100 of 108 API Design Jobs in the UK

Architect for a project (Outside IR35.) You will work closely with senior stakeholders and the wider team on both high and low level solution design to provide improvements on existing systems. Provide technical leadership and guidance throughout the project lifecycle, ensuring solutions are scalable, secure, and align with business … complex enterprise solutions. Strong background in software development and system integration. Strong understanding of cloud platforms (AWS, Azure, Google Cloud) Experience with microservices architecture, API design, and integration patterns. Experience with DevOps practices and tools. Please apply now to be considered for this role. ...

cloud-native platforms supporting mobile applications in a regulated environment. This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery click apply for full job details ...

shaping why we build things, how we build them, and what the future of our product looks like. You’ll collaborate across product, design, and engineering to make decisions that matter: data models, integration patterns, API design, scalability choices, and how we support a system used … polished, intuitive experiences Contribute to technical discovery, architecture thinking, and implementation planning Ask product and UX questions when something doesn't quite add up Design with scale, reliability, and enterprise readiness in mind (security, compliance, flexibility) Own your work from idea to production and care about the impact once ...

MuleSoft Architect Key responsibilities: Development of API management and microservicesWorking as the Integration Technology Architect on the adoption of Hybrid Integration or an iPaaS solutions with a particular focus on the Mulesoft Anypoint platform that includes API Designer, AP manager, and API studioDefining and delivering the Integration … Technology aspects of the projects, including timely production of architectural designs and documentationBeing a key contributor and advocate of Microservice, API Management, process automations, frameworks in projects and programsWorking with Capgemini teams in Switzerland, Europe, and on the global level, on large programs that include multiple technology streams ...

Brief: Own the C++ microservice layer powering imaging, AI, and database capabilities for a new Windows-first (Linux-capable) platform. Responsibilities Design and implement performant C++ microservices for imaging, visualization, and AI workflows. Build APIs and integrate services with the front-end (React/Node/TypeScript). Optimise … environments. Requirements Expert-level C++ with experience building microservices or high-performance systems. Background in imaging, computer vision, or AI integration. Familiarity with databases, API design, and cross-platform development. ...

MuleSoft Architect Key responsibilities: Development of API management and microservices Working as the Integration Technology Architect on the adoption of Hybrid Integration or an iPaaS solutions with a particular focus on the Mulesoft Anypoint platform that includes API Designer, AP manager, and API studio Defining and delivering … Integration Technology aspects of the projects, including timely production of architectural designs and documentation Being a key contributor and advocate of Microservice, API Management, process automations, frameworks in projects and programs Working with Capgemini teams in Switzerland, Europe, and on the global level, on large programs that include multiple ...

observability, and incident response. Collaborate with partner teams (pipeline, storage, analytics) and with product feature teams to define ingestion standards, schemas, retention models, and API surfaces. Guide architectural decisions for large-scale event ingestion, transformation, and delivery systems. Create an environment that supports autonomy, psychological safety, and high engineering … systems to production. Experience with event-driven architectures and large-scale data processing (e.g., Kafka, Pulsar, Flink, ClickHouse, Iceberg, BigQuery). Strong understanding of API design and standards (OpenAPI/Swagger, OAuth/JWT). Familiarity with large-scale logging, observability, or telemetry systems is highly desirable. Ability ...

MuleSoft Architect Key responsibilities: Development of API management and microservices Working as the Integration Technology Architect on the adoption of Hybrid Integration or an iPaaS solutions with a particular focus on the Mulesoft Anypoint platform that includes API Designer, AP manager, and API studio Defining and delivering … Integration Technology aspects of the projects, including timely production of architectural designs and documentation Being a key contributor and advocate of Microservice, API Management, process automations, frameworks in projects and programs Working with Capgemini teams in Switzerland, Europe, and on the global level, on large programs that include multiple ...

product strategy. Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/ ...

influencing product strategy.Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/ ...

expertise across the software stack including firmware/embedded systems, device drivers, OS-level programming (Linux, RTOS), hardware abstraction layers, system software, SDK development, API design, application software, and software tools/utilities Experience with high-speed interface technologies (PCIe, CXL, NVMe, Ethernet, or similar protocols) and system ...

commercial software development experience. Proven success in high-performing engineering teams within fast-paced environments. Deep expertise in: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Desirable experience includes: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform and DevOps … practices Experience in building and scaling SaaS platforms in production. Strong background in software architecture, microservices, and API design. Hands-on experience with AWS platform. Excellent communication skills, capable of motivating and aligning technical teams. Experience with AI tools, APIs, or ML pipelines is highly desirable. Bonus: Exposure ...

paid position suitable for both experienced professionals and recent graduates eager to develop their careers in software engineering. Key Responsibilities Lead the design, deployment, and development of web-based and microservice applications using Angular, TypeScript, and .NET Core. Architect and implement CI/CD pipelines using Azure DevOps. Conduct … PHP. Experience with frameworks such as React, Angular, Node.js, Django, or .NET. Understanding of databases such as MySQL, PostgreSQL, or MongoDB. Familiarity with RESTful API design. Experience with Git version control. Understanding of software testing methodologies and CI/CD pipelines. Excellent problem-solving and analytical skills. Strong attention ...

driven solutions leveraging AWS services and cutting-edge LLM technologies. This is an outside IR35 contract for a 14-week engagement. Key Responsibilities Design and implement Generative AI workflows using AWS Bedrock and AgentCore. Develop multi-agent orchestration frameworks (AWS Strands Agents, LangGraph, or similar). Integrate and fine … Model Context Protocol (MCP) and tool integration for LLMs. Ensure AI safety through guardrails, hallucination detection, and response evaluation. Deploy and manage AWS Lambda , API interfaces, and CI/CD for ML systems. Required Skills AWS Bedrock (model selection, deployment, prompt engineering). Agentic workflows and multi-agent orchestration. ...

international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions scale … role requires consultancy-level technical depth, strong delivery discipline, and the ability to translate complex operational needs into scalable, enterprise-ready solutions. Key Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular ...

international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions scale … role requires consultancy-level technical depth, strong delivery discipline, and the ability to translate complex operational needs into scalable, enterprise-ready solutions. Key Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular ...

Laravel. Expertise in Typescript and frontend testing frameworks (Cypress, Vite). Comfortable working across the stack, but love creating smooth, user-friendly interfaces. RESTful API design and can build performant endpoints. Ability to thrive in a fast-paced, startup environment where your work has visible impact. Proficiency … part of a team of 6-7 developers maintaining and enhancing existing software products using Vue/Nuxt.js and RESTful Laravel API’s. As Full-Stack Engineer with a definite front-end lean, you will be writing performant, testable and maintainable code. They will look for you to collaborate ...

opportunity to make a real impact in a rapidly growing team, while working on cutting-edge AI technology. What You'll Work On: Design and implement scalable backend systems using Python (FastAPI, Flask, or Django) Integrate AI-generated code into production-ready services Take ownership of projects from idea … agentic-coding workflows to accelerate development Who You Are: 5+ years of experience in back-end development (Python based stack ideally) Strong understanding of API design and systems architecture Strong communication and collaboration skills Exposure to AI, LLMs or modern ML-backed systems is a plus! Apply ...

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 …/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 ...

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 …/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 ...

leadership (Lead Engineer/CTO). Hands-on experience in regulated environments (fintech, trading, or gambling). Backend expertise (Rust preferred), relational databases, API design, blockchain integration. Familiarity with smart contracts, oracles, bridges, and authentication/security protocols. Strong problem-solving, mentoring, and cross-team collaboration skills. Nice ...

build innovative products Evaluate, appropriately test, and debug your work, striving for high quality Knowledge, Skills & Abilities: Strong knowledge in C++ Strong understanding of API design Ability to independently execute on medium sized features, taking a few weeks and multiple PRs to complete Ability to understand, debug ...

details Rely on data and customer feedback to guide decisions and prioritise effectively Being able to go into the details of API design, payment messages or whatever is required Are passionate about developing people and creating an inclusive, collaborative team environment Enjoy working in a fast-paced, constantly ...

delivery Build data-rich, insight-driven mobile experiences with strong visualisation and UX Work closely with the backend team on data modelling, analytics, and API design Translate high-fidelity designs into a polished, high-quality consumer product Take responsibility for the full mobile lifecycle, including releases and operational ...

Qualifications Extensive experience developing scalable, high-performance backend systems using Node.js and/or Java (v21+). Strong knowledge of microservices architecture and RESTful API design. Demonstrated ability to lead technical initiatives, mentor engineering team members, and promote best practices across projects. Preferred Skills and Experience Hands-on experience … Proficiency in containerization technologies (Docker, Podman) and Kubernetes-based orchestration. Experience implementing secure coding practices and integrating IAM solutions such as Keycloak. Familiarity with API gateway platforms including WSO2, Kong, or Apigee. Advanced understanding of security standards such as TLS, OAuth2, encryption techniques, and threat mitigation strategies. Practical experience ...