51 to 75 of 133 API Design Jobs in England

seasoned Solution Architect with deep expertise in Point of Sale (POS) to drive architecture for next-generation retail systems. This role will lead the design of store systems within an omnichannel ecosystem, ensuring seamless integration across POS, eCommerce, CRM, ERP, and payment platforms. You will play a key role … secure POS solutions across global retail environments. Key Responsibilities : Lead end-to-end solution architecture for POS platforms across store and retail ecosystems. Design scalable architectures covering store systems, mPOS, self-checkout, and backend services. Define integration frameworks between POS, ERP, CRM, OMS, inventory, and payment gateways. Collaborate with ...

offered as a remote full-time contract with potential for extension depending on performance and project needs. Project Overview You will contribute to the design and development of a scalable CRM platform used to: Manage customer lifecycle and engagement Store and process customer and organisation data Automate workflows … Support internal operational tools for teams The platform is built using modern TypeScript-based full-stack technologies , microservices architecture, and cloud infrastructure. Key Responsibilities Design, develop, and maintain CRM platform features across the full stack Build scalable backend services using Node.js and TypeScript Develop modern user interfaces using React ...

with an award-winning digital product studio known for building beautifully crafted, human-centred digital products for global clients. With a strong reputation across design, product and engineering, they deliver impactful work across the full product lifecycle — from early discovery through to large-scale builds. They’re now looking … Role This is a hands-on technical leadership position , combining full-stack development with ownership of technical direction across projects. You’ll: Lead the design, development and delivery of scalable digital products (frontend, backend & infrastructure) Drive technical direction , ensuring solutions are robust, secure and performant Stay close ...

shape architecture, lead complex initiatives across teams, and mentor engineers while remaining technically deep. Key Responsibilities Define and drive backend technical strategy and architecture Design scalable, fault-tolerant, event-driven, and cloud-native systems Lead multi-team engineering initiatives and complex system designs Build and optimise Java (Java 17+ … backend services using Spring Boot or Micronaut Design RESTful APIs, messaging systems, and microservices Own performance, reliability, security, monitoring, and observability Lead system design sessions, architecture reviews, and technical decision-making Champion engineering standards, CI/CD, testing, automation, and DevEx Mentor engineers and collaborate with Product, DevOps ...

code quality, and conduct structured code reviews across the delivery team. Work directly with the BA to translate business requirements into sound technical design and produce low-level design documentation. Make architecture decisions, present options clearly to non-technical stakeholders, and govern integration standards across the programme. Support … roles, with strong hands-on .NET/C# delivery. Demonstrable experience leading architecture decisions on production-grade systems, not just contributing to them. REST API design and integration experience at scale, including defining and governing integration standards. Microsoft SQL Server: schema design, query optimisation, and working knowledge ...

engineers and help elevate the overall technical capability of the team. What youll be doing Youll be working across the full stack, leading the design and delivery of new features while ensuring performance, scalability, and reliability. The role requires someone who can take high-level requirements and translate them … development, paired with strong backend experience in Java and the Spring Boot ecosystem (including Data, Security, and MVC). A solid understanding of RESTful API design, SQL/database design, CI/CD pipelines, and AWS is essential. What were looking for Were looking for someone with ...

where you'll engineer cloud-native solutions that directly support mission-critical capabilities. In this role, you will work within empowered DevOps teams to design, build, deploy and maintain applications and services on AWS. You'll collaborate closely with end-users, experiment with new technologies, and influence architectural decisions. … solving skills Experience working within agile delivery environments Desirable Experience of the Cloud DevOps Engineer AWS Associate-level certification (Architect, Developer, DevOps) Microservices and API design knowledge Experience with Docker, Kubernetes, ECS, EKS Understanding of monitoring, observability and FinOps in cloud environments CI/CD experience (Jenkins, Bamboo ...

could be the role for you! What You'll Have the Opportunity to Do: • Develop and execute AWS workloads using cutting-edge cloud patterns • Design expandable application solutions in sync with best practice for performance, resilience and cost • Set up and manage CI/CD pipelines and apply cloud … security principles • Work alongside different clients and multi-functional teams to deliver solutions • Produce premium design documentation • Build and tune system architectures to ensure reliable, scalable and maintainable solutions About The Candidate The right candidate for the role of AWS Architect will have/gain the following experience: • Appropriate ...

with an award-winning digital product studio known for building beautifully crafted, human centred digital products for global clients. With a strong reputation across design, product and engineering, they deliver impactful work across the full product lifecycle — from early discovery through to large-scale builds. They’re now looking … Role This is a hands-on technical leadership position, combining full-stack development with ownership of technical direction across projects. You’ll: Lead the design, development and delivery of scalable digital products (frontend, backend & infrastructure) Drive technical direction, ensuring solutions are robust, secure and performant Stay close ...

looking for two experienced Senior Full Stack Software Engineers to join a high-performing engineering team. You will play a senior role in the design and delivery of modern, scalable web applications, bringing strong full stack expertise across Next.js, TypeScript, and AWS in a programme delivering meaningful impact across … services nationwide. KEY RESPONSIBILITIES Design and build high-quality, scalable full stack applications using Next.js and TypeScript Develop and maintain cloud-native solutions on AWS, following well-architected and security best practices Design, build, and consume RESTful APIs, ensuring performance, reliability, and security standards are met Write ...

looking for two experienced Senior Full Stack Software Engineers to join a high-performing engineering team. You will play a senior role in the design and delivery of modern, scalable web applications, bringing strong full stack expertise across Next.js, TypeScript, and AWS in a programme delivering meaningful impact across … services nationwide. KEY RESPONSIBILITIES Design and build high-quality, scalable full stack applications using Next.js and TypeScript Develop and maintain cloud-native solutions on AWS, following well-architected and security best practices Design, build, and consume RESTful APIs, ensuring performance, reliability, and security standards are met Write ...

build. The team is small, collaborative, and deliberately high calibre. Engineers are trusted to take ownership, contribute to product direction, and work closely with design and commercial teams to shape what gets built. What you will be doing Building end to end features across backend and frontend, from API … design through to UI Working closely with product and design to turn ideas into well thought through functionality Improving performance, usability, and reliability of a live product used by real customers Contributing to technical decisions as the platform evolves and scales Owning meaningful parts of the product rather ...

roles, with a track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal ...

roles, with a track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal ...

roles, with a track record of building solutions end-to-end Experience deploying applications in cloud environments, preferably Microsoft Azure Strong experience in REST API design and OpenAPI standards Extensive experience working with databases, data platforms, and analytical tools Ability to research, propose, and implement solutions with minimal ...

exciting opportunity to work on challenging projects, influence architecture decisions, and help shape the future of our software solutions. What Youll Do Design, develop, and maintain high-quality C# applications across our platform Work on AI-enabled solutions and integrate machine learning capabilities where relevant Ensure applications are secure … design and adhere to best practices in cybersecurity Collaborate with cross-functional teams including product, QA, and DevOps Participate in code reviews, mentoring junior developers, and promoting best practices Solve complex technical problems and contribute to the overall architecture strategy What Were Looking For Essential: Strong experience with C# ...

fast-growing, award-winning software company that delivers end-to-end cloud solutions for practices and businesses. They are looking for an API Engineer to join the team, where you'll be building API infrastructure that enables their product, third party integrations, their users and AI services … interact with their established product portfolio. Key Responsibilities: Design and implement RESTful APIs that expose product capabilities to AI services and third-party integrations Build production-grade APIs using C# .NET, SQL, and Azure services Implement authentication and authorization using OAuth and modern security patterns Write clean, maintainable, well ...

systems that are safer, smarter, and dramatically more environmentally responsible. Location: London or Porto The Role We’re seeking a Senior Software Engineer to design, build, and maintain backend containerised services that power our scalable edge‐compute platforms. You’ll work closely with a Software Team Lead and collaborate … leadership while remaining hands‐on with complex systems. What You’ll Do Build production‐grade software using .NET C#, Python , and modern backend technologies Design and prototype services using containerised microservices Apply and challenge engineering best practices to continuously improve quality Make sound technical decisions in high‐impact areas ...

agility with the backing of a well-established business. The Senior Back End Developer will... take ownership of backend engineering for a new API-first data intelligence platform. Role Highlights Design and build scalable backend systems from a true greenfield starting point Define architecture, balancing rapid delivery with … long-term scalability Develop API-first services for data-heavy, enterprise-grade applications Embed observability, metrics, and performance tracking from day one Collaborate within a small, high-autonomy team shaping a new product You Will Need Extensive backend development experience within data-driven B2B environments Strong programming skills ...

Senior Applied AI Engineer (.NET) Were looking for a Senior Applied AI Engineer to design and deliver production-grade AI-powered features within a modern .NET product environment. This is a hands-on engineering role focused on applying AI in real systems not training models. Youll work with commercial … role suits someone who has already successfully integrated AI into production products and can bring proven patterns into a growing team. What Youll Do Design and build AI-powered product features within a C#/.NET ecosystem Integrate commercial AI APIs into production systems with a focus on reliability ...

Experience You must have commercial experience or strong hands-on exposure to: Java (17+) Spring Framework Microservices architecture & REST APIs OpenAPI/Swagger for API design and documentation Test-Driven Development (TDD) Desirable/Nice-to-Have Skills Experience or familiarity with any of the following would … Redis Monitoring & observability tools ( Grafana, Prometheus, Kibana ) The Ideal Candidate Junior to early mid-level backend developer Happy working under guidance rather than leading design decisions Comfortable contributing to existing codebases Looking for stable contract work within the public sector ...

large, ambitious commercial environment. THE ROLE: You will take ownership of designing and delivering backend services within a modern MACH-based digital platform (Microservices, API-first, Cloud-Native and Headless). Working closely with product, frontend and platform teams. Key responsibilities include: Designing, developing and maintaining scalable microservices using … practices across the team YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: TypeScript and Node.js development Microservices-based architectures GraphQL and REST API design Working with SQL and NoSQL databases Modern software development practices, including CI/CD, testing and automation THE BENEFITS: You will receive ...

with strong LLM experience ( Claude preferred). Key Responsibilities: Develop and maintain backend services using Java, with a strong focus on server-side engineering Design and implement scalable, secure, and high-performance APIs Lead backend development initiatives and enforce best coding practices Contribute to the React frontend, ensuring seamless … code reviews, architecture discussions, and performance optimization Requirements : Strong backend development experience with Java (preferably Spring Boot) Deep expertise in server-side architecture and API design/development Proficiency in React for frontend development Hands-on experience with LLM/AI tools (e.g., Claude or similar) and integrating ...

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 ...

.NET systems (roughly 70/30 split), including macro and microservices Contribute to architecture and technical strategy, driving decisions on technology, frameworks, and system design Work with SQL Server and Cosmos DB backends, ensuring high performance and maintainability Support teams using .NET 8–10, Blazor, MVC and modern front … productivity Who you are: Advanced experience in C# and .NET (backend or full-stack) Comfortable with legacy and modern .NET systems Knowledge of microservices, API design, and distributed systems Familiarity with Blazor is a plus Hands-on with cloud environments (Azure), containerization, CI/CD pipelines Strong problem ...