76 to 100 of 179 API Design Jobs

your primary front-end framework Deep knowledge of React (hooks, context, performance optimization) and JavaScript/TypeScript Strong Node.js back-end skills, including REST API design and authentication Proficiency with state management (Redux Toolkit, Zustand, React Query) Experience with testing frameworks (Jest, Cypress, Playwright) Cloud deployment and containerization ...

your primary front-end framework Deep knowledge of React (hooks, context, performance optimization) and JavaScript/TypeScript Strong Node.js back-end skills, including REST API design and authentication Proficiency with state management (Redux Toolkit, Zustand, React Query) Experience with testing frameworks (Jest, Cypress, Playwright) Cloud deployment and containerization ...

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 ...

Java or a similar language is required, with the expectation that Java will feature more prominently at certain stages of development. Key Responsibilities: - Design, build, and maintain high-quality frontend applications using Angular - Contribute to full-stack development across modern, scalable systems - Collaborate with backend engineers on API … design and integration - Work across the full software development lifecycle with a DevOps mindset - Apply best practices including CI/CD, automated testing, and clean code principles - Operate within an agile team, contributing to continuous improvement and technical decisions - Ensure solutions meet security, performance, and quality standards Skills Required ...

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# ...

Java or a similar language is required, with the expectation that Java will feature more prominently at certain stages of development. Key Responsibilities: Design, build, and maintain high-quality frontend applications using Angular Contribute to full-stack development across modern, scalable systems Collaborate with backend engineers on API … design and integration Work across the full software development lifecycle with a DevOps mindset Apply best practices including CI/CD, automated testing, and clean code principles Operate within an agile team, contributing to continuous improvement and technical decisions Ensure solutions meet security, performance, and quality standards Skills Required ...

services as the platform evolves. While Angular experience is beneficial, it is not essential, though similar modern JavaScript framework experience is required. Key Responsibilities: - Design, build, and maintain high-quality backend applications using Java - Contribute to full-stack development across modern, scalable systems - Collaborate with frontend engineers on API … design and integration - Work across the full software development lifecycle with a DevOps mindset - Apply best practices including CI/CD, automated testing, and clean code principles - Operate within an agile team, contributing to continuous improvement and technical decisions - Ensure solutions meet security, performance, and quality standards Skills Required ...

contributing to backend services as the platform evolves. While Java experience is beneficial, itis not essential, though similar backend experience is required. Key Responsibilities: - Design, build, and maintain high-quality frontend applications using Angular - Contribute to full-stack development across modern, scalable systems - Collaborate with backend engineers on API … design and integration - Work across the full software development lifecycle with a DevOps mindset - Apply best practices including CI/CD, automated testing, and clean code principles - Operate within an agile team, contributing to continuous improvement and technical decisions - Ensure solutions meet security, performance, and quality standards Skills Required ...

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 ...

Spring Boot, Oracle/SQL, and Kafka required - with the ability to evaluate and adopt AI/ML capabilities. What You'll Do Lead design and implementation of high-throughput distributed systems using Java and Spring Boot Own end-to-end technical architecture for cross-team initiatives (provisioning, billing … Kafka for real-time streaming and integration Evaluate and integrate AI/ML tools into engineering workflows and developer productivity Establish engineering standards, lead design reviews, and mentor senior engineers Partner with product and architecture teams to translate business needs into scalable solutions Lead production incident response, root cause ...

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 ...

that power these systems, working in a multinational, AI-first engineering team where quality, ownership, and long-term thinking matter. What You’ll Do Design, build, and maintain scalable backend services for Keepnet’s Human Risk Management platform. Build clean, modular APIs that integrate internal services and third-party … enable automation, reporting, and security workflows. Develop testable, maintainable codebases using principles such as Clean Architecture, DDD, and TDD. Own the full development lifecycle : design, implementation, CI/CD (Azure), and post-release monitoring. Work on distributed and asynchronous systems using message queues, background workers, and event-driven workflows. ...

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 ...

contribute to architectural decisions, champion engineering best practices, and help shape how the team builds and scales as the business grows. Key Responsibilities: Design, build, and maintain scalable, resilient backend services and APIs in Go Collaborate closely with product, engineering, and operations to deliver high-quality, well-tested software … consider engineers whose background is in Python provided they have practical Go experience Solid understanding of microservices architecture and REST and/or gRPC API design Comfortable working with AWS and Docker-based environments Experience with relational and/or NoSQL databases and event-driven systems Collaborative ...

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 ...