51 to 75 of 91 API Design Jobs in England

lead a team of elite engineers who embed directly with Fortune 500 customers to ship deeply integrated AI agents—owning everything from agent design and evaluation to the backend services, data systems, and cloud infrastructure that make them production‐ready. You'll partner closely with our Forward Deployed … volume for senior engineering roles. Hands‐on fluency with the full AI stack. Deep familiarity with LLMs and agent systems, evaluation frameworks, backend and API design (Python or TypeScript), data systems (PostgreSQL, DynamoDB, MongoDB, or similar), and cloud infrastructure (AWS, Azure, or GCP) including Kubernetes, Docker ...

experience with: Android development (Kotlin, Jetpack Compose) Backend development (Rust, Python or Go) Git and modern development workflows Docker + CI/CD pipelines API design (REST/OpenAPI) Working in secure or controlled environments Nice to have: AWS or Azure experience Kubernetes Agile delivery experience Secure coding ...

fast-moving, product-centric environments. Key requirements: Ruby & Ruby on Rails Full-Stack Engineering: JavaScript, TypeScript, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data Stores: PostgreSQL, MySQL, Redis, Elasticsearch Async Processing: Sidekiq, Resque Cloud & DevOps: AWS, Heroku, Docker, CI/CD pipelines … Testing & Quality: RSpec, Capybara, TDD methodologies Security, performance tuning, and system hardening AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling Responsibilities: Provides hands-on technical leadership to engineering teams (515 people), including mentoring, code review, and architectural direction. Owns end-to-end system architecture, ensuring ...

work from home 1 day a week if desired. The salary on offer is £50,000-£62,000 DOE plus good benefits. Key Responsibilities Design, develop, and maintain scalable web applications using modern frameworks and technologies. Integrate Twilio APIs for voice, messaging, and video communication features. Collaborate with product … Twilio APIs (voice, SMS, video) and related integrations. Proven ability to build and work with real-time, event-driven systems. Solid grasp of RESTful API design and microservice architecture. Hands-on experience with AWS serverless technologies including DynamoDB, Lambda, and API Gateway. Familiarity with CI/ ...

influence technical strategy Work within a senior, AI-first engineering environment KEY POINTS Senior technical leadership role with significant architectural ownership Leading the design and development of a modern platform rebuild Strong focus on Node.js, TypeScript, React and cloud technologies Opportunity to shape engineering standards, architecture and AI adoption … role where you'll help shape the future of a modern, large-scale platform whilst remaining hands-on with development. You'll lead the design and delivery of scalable backend services, APIs, integrations and data flows, whilst providing architectural guidance across the wider engineering team. Although the role ...

evolve our stack and make constant improvements. Required Skills/Experience Strong C# development experience Experience with both .NET Core and .NET Web API Experience of building Microservices in .Net Core Experience using Message Based Architectures Experience using both SQL & NoSQL technologies Experience of API design Cloud ...

evolve our stack and make constant improvements. Required Skills/Experience Strong C# development experience Experience with both .NET Core and .NET Web API Experience of building Microservices in .Net Core Experience using Message Based Architectures Experience using both SQL & NoSQL technologies Experience of API design Cloud ...

division. This position falls under our Cross Border line of business and is located in London. In this role, you will contribute to the design and development of our eMoney and FX payment systems. You will report directly to the Engineering Manager and collaborate closely with Product, Design … will set you up for success by providing: Assigned workspace or home office setup Company-issued equipment Role Responsibilities Provide significant contribution to the design, development, and maintenance of secure and scalable payment systems. Collaborate with engineering managers, designers, and product teams to gather and analyse requirements, implement technical ...

influence technical strategy Work within a senior, AI-first engineering environment KEY POINTS Senior technical leadership role with significant architectural ownership Leading the design and development of a modern platform rebuild Strong focus on Node.js, TypeScript, React and cloud technologies Opportunity to shape engineering standards, architecture and AI adoption … role where you'll help shape the future of a modern, large-scale platform whilst remaining hands-on with development. You'll lead the design and delivery of scalable backend services, APIs, integrations and data flows, whilst providing architectural guidance across the wider engineering team. Although the role ...

distributed video recording systems and advanced reporting/analytics applications. In this role, you will be deeply involved in hands‐on development, architectural design, and cross‐studio collaboration to advance our internal ecosystem. Key Responsibilities Design & Implementation: Architect and develop robust backend solutions to meet the fast‐paced … challenges of global game development. Technical Leadership: Contribute to the team’s software design guidelines, coding standards, and architectural blueprints. Global Collaboration: Partner and collaborate with other Rockstar technology teams across our worldwide studios. Continuous Innovation: Develop a deep understanding of existing systems while researching and adopting new technologies ...

Essential Strong full-stack experience: comfortable building production frontends (React or similar, TypeScript) and production backend services (Go, Python, Node.js, or similar). Solid API design experience, both REST and event-driven, with an understanding of where each fits. Practical experience with message brokers, streaming, or pub/ ...

client data will be sourced, validated, and integrated into Mondra, leveraging where possible our existing Import and Export APIs and identifying where custom API development may be required for fulfil Mondra’s data requirements. You will also contribute to the client contracting process, ensuring technical commitments are clearly defined … including mapping data sources, transformation logic, and validation processes. Identify the client’s BI requirements, and define data export strategies (preferably via existing Mondra API). Identify the authentication/authorisation capabilities of the client, and promote the integration with Mondra’s Identity Provider via Single Sign On. Leverage ...

role, with strong backend expertise in Typescript and Node and front capability in React Proficiency in SQL, Redux, cloud services (AWS or GCP), RESTful API design and GraphQL Strong analytical skills with the ability to design, optimise, and troubleshoot complex UIs Excellent communication and leadership skills; ability ...

assisted development workflows. ● Agile Experience: Proven track record working within Agile teams and participating in iterative delivery. ● Core Engineering: Proficiency in Git, REST API design, and modern CI/CD practices This is a great opportunity to work for an exciting organisation and to start ASAP. The role ...

systems problems. Skills and experience Strong expertise in Python and modern backend frameworks Deep knowledge of relational databases, particularly PostgreSQL Strong understanding of RESTful API design and microservices patterns Experience working with cloud platforms and containerised environments (Docker, Kubernetes) If you are looking for a new challenge, then ...

LangChain or LangGraph (agent memory, tool calling, state management) Dagster in production (assets, sensors, partitions) or equivalent pipeline orchestration Strong backend fundamentals including API design, async programming, and database modelling You've built systems that had to work reliably at scale, not just pass a demo Experience 5+ ...

products (e.g., Concierge an agentic AI workflow tool, Prism a Mercer knowledge fabric for scheme data, and similar initiatives), from problem framing and design through build, release, and support. Translate risk advisory/consulting needs into clear technical requirements, user stories, and solution designs; partner with stakeholders through … Proven experience as a Tech Lead/Lead Engineer delivering production software, including hands-on coding and code review ownership. Strong backend engineering skills (API design, data modelling, performance) and experience building secure, role-based applications. Experience working directly with business stakeholders in a financial firm, with ...

improving APIs that support critical platform functionality Investigating production issues and tracing problems across distributed systems Working with product and engineering teams to design scalable solutions Improving reliability, observability and performance across existing services Reviewing code, sharing knowledge and helping raise engineering standards across the team Tackling real-world … APIs used by customers or internal teams Other Skills Needed: Solid backend engineering experience in C#, Java, or Go, with a strong grasp of API design and architecture. Hands-on experience managing and debugging production systems across cloud and self-managed infrastructure. Proven ability to navigate complex third ...

develop new features, enhance existing systems, and ensure our platform remains stable and efficient. Your deep understanding of Rails architecture, PostgreSQL optimisation, and API design will be essential as you contribute to ongoing development projects. If you enjoy collaborating in Agile/Scrum environments, value clean code ...

evolution of core Ruby on Rails operational platforms. Optimise PostgreSQL performance and Sidekiq background job efficiency. Manage secure third-party integrations and RESTful API design. Partner with Platform teams on AWS and CI/CD reliability. The Person: Deep experience with Ruby on Rails and OOP. Expert in PostgreSQL ...

modernising a complex service-oriented architecture environment. This is a hands‐on architectural leadership role requiring strong stakeholder engagement, technical analysis, and strategic design capability. The successful candidate will play a key role in assessing the current architecture, defining future‐state technical direction, and guiding development teams through scalable … Architect within complex enterprise environments Strong background in service-oriented and distributed system architecture Experience designing scalable, resilient, and maintainable platforms Strong understanding of API design and service communication protocols Experience with messaging technologies and event-driven architectures Knowledge of data integration, data flows, and system interoperability Experience ...

/Linux Software Developer for an initial 6 month contract Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Rate: Negotiable Essential Skills Experience developing application code … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

skilled developers. Essential skills & experience Strong technical understanding of business platforms Strong knowledge of .NET/SQL & Oracle Solid experience with enterprise integration patterns, API design, asynchronous messaging and data synchronisation Proven experience providing technical leadership across onshore and offshore teams, including line management responsibility Track record … live service Strong ability to review designs, identify risks and ensure solutions meet clear quality standards Good understanding of DevOps, CI/CD, secure design and modern delivery practices Experience working in blended delivery environments including permanent teams, contractors and System Integrators Core responsibilities Define and maintain engineering standards ...

contract Solution Architect for a 3 month project (Outside IR35.) You will work closely with senior stakeholders and the wider team to provide architecture design and the integration approach between front end and backend systems. You will provide technical leadership and guidance throughout the project lifecycle, ensuring solutions … solutions. Strong background in front and backend technologies for 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. ...

production AI/ML feature development Understanding of anomaly detection or predictive analytics Proficiency in Python and TypeScript/JavaScript Experience with REST API design and MCP integration patterns Knowledge of MLOps practices Understanding of graph-based dependency or impact analysis (desirable) Experience with AI features in compliance ...