226 to 250 of 1,028 API Design Jobs in the UK

implementing, and optimizing UI applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software development lifecycle, including estimation, design, coding, test automation, code reviews, deployment, and support. Teams are responsible for specific services or products. Our solutions help airlines manage safe and high-performance flight operations. The Frontend … on, but not limited to, the skills and tech stack for Software Development around: Web and Mobile Frontends Vue.js, TypeScript HTML, CSS/SASS SPA, Micro frontends UX, Responsive Design, Accessibility Design Systems Unit testing, Functional testing Responsibilities: Extend existing infrastructure/architecture or propose new infrastructure/architecture to support new features Propose architecture design changes … to ease implementation/improve product behavior Coding, testing, documenting and debugging assigned development tasks to meet acceptance criteria Set standards for team members code submissions Propose changes at design level to make product testable Guides unit/feature testing creation on existing functions as well as new code Implement product features with limited specifications through engagement with stakeholders More ❯

We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations. This is a hybrid role working from our London office 2 days per week. As a Lead Java Developer at Waracle, you won't just … with the Spring Framework (Spring Boot, MVC, Security, Data JPA). Solid understanding of relational databases (e.g., PostgreSQL, MySQL) and ORM frameworks (e.g., Hibernate, JPA). Expertise in RESTful API design and development. Proficiency with version control systems (Git) and build tools like Maven or Gradle. Digital Consultancy background is preferred, with expertise in translating complex client requirements More ❯

and stay up-to-date with emerging trends in back-end development. Key Responsibilities: Develop and maintain robust, scalable, and high-performance back-end services using Node.js and Express.js. Design and implement RESTful APIs and microservices, ensuring security, efficiency, and maintainability. Collaborate with front-end developers to provide seamless integration between back-end and front-end components. Conduct thorough … or GitLab CI. Work with DevOps to manage containerised environments using Docker. About You: Extensive experience with Node.js, Express.js, and back-end development best practices. Strong knowledge of RESTful API design and microservices architecture. Proficiency in working with both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases. Experience with CI/CD pipelines and DevOps practices, including automated testing More ❯

our agentic AI products. This role involves bringing our agentic workers to a diverse user base across the procurement and supply chain industry. You’ll own everything from infrastructure design and automated delivery pipelines to observability and security, ensuring our systems are resilient, scalable, and cost-efficient for the world’s largest supply-chain organisations. Tasks In this role … you will: Design and evolve our multi-cloud platform (Azure and AWS) using infrastructure-as-code and GitOps best practices. Build and maintain high-throughput Kubernetes clusters (EKS) with secure networking, service mesh, policy enforcement, and self-service tooling for application teams. Craft robust CI/CD pipelines that deliver containerised services from commit to production with automated testing … in Python, Go, or Java with clean code principles, test coverage, and performance awareness. Service Architecture : experience building and operating high-availability, distributed systems (microservices and event-driven). API Design : REST and gRPC, with versioning, throttling, auth, and schema validation (OpenAPI, Pydantic, Protobuf). Datastores : deep knowledge of RDBMS (PostgreSQL/MySQL), NoSQL (DynamoDB, Redis, Cassandra), and More ❯

role combines deep software engineering leadership with a strong understanding of regulated environments, particularly as we evolve towards Software as a Medical Device (SaMD). You will oversee the design, architecture, and delivery of a highly scalable, secure, and compliant cloud-based solution that empowers researchers, clinicians, and bioinformaticians. This is a mission-critical leadership position that will influence … needs into scalable features Navigate a dynamic environment, balancing short-term priorities with long-term vision Manage trade-offs between scope, quality, and timelines Cross-Functional Collaboration Align engineering, design, and product teams on shared goals Communicate effectively with stakeholders to gather input and share progress Ensure timely, high-quality feature delivery Technical Oversight Maintain high standards in architecture … Azure, GCP, Oracle), Kubernetes and IaC with Terraform Strong grasp of data privacy and security frameworks, including role-based access control (RBAC), encryption at rest and in transit, secure API design, and identity/auth protocols (e.g., OAuth2, OpenID) Outstanding communication and collaboration skills, capable of influencing stakeholders, external partners, and non-technical contributors Understanding of the software More ❯

delivering immersive experiences for live sports audiences. We're pushing the limits to redefine the future of athletics. About the Role We’re seeking a Lead Solution Architect to design and implement a scalable, high-performance architecture. You will play a key role in defining the technical strategy, ensuring efficient data processing, storage, and analytics capabilities. You will collaborate … emerging technologies to enhance system performance and efficiency. Optimize Data Processing for large-scale data ingestion, transformation, and analysis. Implement Best Practices for distributed systems, event-driven architectures, and API design. Collaborate Cross-Functionally with product, DevOps, and data teams to refine requirements and drive technical excellence. Ensure Reliability & Security by designing high-availability, fault-tolerant, and secure systems. More ❯

Expertise in Java and experience with tools like IntelliJ IDEA, Kubernetes, Docker, and AWS. Ability to learn new technologies quickly and adapt to different programming stacks. Experience with SQL, API design and JavaScript is beneficial, but not required. Strong collaboration and communication skills, with a focus on problem-solving as a team. Desire to continually grow and evolve More ❯

programming as well as familiarity with functional concepts Experience working with version control systems Experience writing testable code Good to have Technical Skills: Understanding of web application architecture and api design Understanding of event driven architecture including use of message brokers (eg. Apache Kafka, RabbitMQ, SQS etc) Understanding of micro service architecture Understanding of CI/CD, containerisation More ❯

of best in-class security solutions Requirements 5+ years as a Node.js/JavaScript developer, ideally, with background in monitoring & supporting large scale production systems Deep understanding of REST API design and WebSockets Familiar with cloud services such as AWS and GCP Experience in large-scaled distributed environments Good command of Linux environment Clear, logical communicator in English More ❯

+ Next.js, Tailwind, Prisma, tRPC PostgreSQL, MongoDB, Redis Serverless, AWS, Google Cloud, Github Actions DBT, BigQuery Terraform Python Requirements Strong Python experience in building scalable backend systems. Familiarity with API design & distributed systems architecture. Experience working with event-driven architectures (e.g. Kafka, Pub/Sub, AWS Step Functions, etc.). Comfortable optimising performance & scaling distributed AI workloads. Experience More ❯

large complex code bases Proven experience as a full stack developer including extensive knowledge and experience working in Java or C# and React/Typescript Basic UI/UX design knowledge REST APIs design and implementation Git Code reviews/Good coding practices SQL Ability to work independently Strong communication and interpersonal skills Desire to collaborate and to More ❯

large complex code bases Proven experience as a full stack developer including extensive knowledge and experience working in Java or C# and React/Typescript Basic UI/UX design knowledge REST APIs design and implementation Git Code reviews/Good coding practices SQL Ability to work independently Strong communication and interpersonal skills Desire to collaborate and to More ❯

Integration Engineer – SQL Server/Web & API Development 📍 Location: UK Remote 📅 Contract Length: Initial 6 months + extensions 💷 SDS: Inside IR35 🚀 Start Date: ASAP We're hiring an experienced Integration Engineer to support a large-scale enterprise transformation project, working across data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who … thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures, and transformation logic • Build and consume RESTful and SOAP APIs • Work with XML, XSL, and JSON formats for data … to the continuous improvement of integration workflows What You’ll Bring: • Proven experience as an Integration Engineer, Software Developer, or Backend Engineer • Strong SQL Server skills (procedures, views, table design, indexing, optimisation) • Solid background in .NET Framework/.NET Core for API and backend development • Understanding of JavaScript and modern web service architectures • Familiar with both REST and More ❯

Integration Engineer SQL Server/Web & API Development ?? Location: UK Remote ?? Contract Length: Initial 6 months + extensions ?? SDS: Inside IR35 ?? Start Date: ASAP We're hiring an experienced Integration Engineer to support a large-scale enterprise transformation project, working across data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who … thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms Develop and optimise SQL queries, stored procedures, and transformation logic Build and consume RESTful and SOAP APIs Work with XML, XSL, and JSON formats for data … contribute to the continuous improvement of integration workflows What Youll Bring: Proven experience as an Integration Engineer, Software Developer, or Backend Engineer Strong SQL Server skills (procedures, views, table design, indexing, optimisation) Solid background in .NET Framework/.NET Core for API and backend development Understanding of JavaScript and modern web service architectures Familiar with both REST and More ❯

Integration Engineer – SQL Server/Web & API Development Location: UK Remote Contract Length: Initial 6 months + extensions SDS: Inside IR35 Start Date: ASAP We're hiring an experienced Integration Engineer to support a large-scale enterprise transformation project, working across data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who … thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures, and transformation logic • Build and consume RESTful and SOAP APIs • Work with XML, XSL, and JSON formats for data … to the continuous improvement of integration workflows What You’ll Bring: • Proven experience as an Integration Engineer, Software Developer, or Backend Engineer • Strong SQL Server skills (procedures, views, table design, indexing, optimisation) • Solid background in .NET Framework/.NET Core for API and backend development • Understanding of JavaScript and modern web service architectures • Familiar with both REST and More ❯

Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI … Knowledge of CI/CD tools (e.g., GitHub Actions, Jenkins, CodePipeline) Familiarity with Docker and containerized deployments Strong understanding of software design patterns , clean code practices, and Agile methodologies More ❯

Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI … Knowledge of CI/CD tools (e.g., GitHub Actions, Jenkins, CodePipeline) Familiarity with Docker and containerized deployments Strong understanding of software design patterns , clean code practices, and Agile methodologies More ❯

candidate will be responsible for designing, developing, and maintaining scalable backend systems, ensuring high performance and responsiveness to requests from front-end applications and third-party systems. Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage … serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end developers, DevOps, and product teams to deliver high-quality software Ensure code quality through unit testing , integration testing , and code reviews Automate deployments using CI/CD pipelines and Infrastructure as Code (IaC … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI More ❯

candidate will be responsible for designing, developing, and maintaining scalable backend systems, ensuring high performance and responsiveness to requests from front-end applications and third-party systems. Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage … serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end developers, DevOps, and product teams to deliver high-quality software Ensure code quality through unit testing , integration testing , and code reviews Automate deployments using CI/CD pipelines and Infrastructure as Code (IaC … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI More ❯

candidate will be responsible for designing, developing, and maintaining scalable backend systems, ensuring high performance and responsiveness to requests from front-end applications and third-party systems. Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage … serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end developers, DevOps, and product teams to deliver high-quality software Ensure code quality through unit testing , integration testing , and code reviews Automate deployments using CI/CD pipelines and Infrastructure as Code (IaC … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI More ❯

strategy. Technical Evangelism: Serve as a champion for technology, architecture, and best practices in product development. Hands-on Development: Actively contribute to product development using the Microsoft tech stack. Design & Implementation: Participate in the design and implementation of highly available, cloud-grade production services. Strategic Partnership: Collaborate with Product Management on solution feasibility and effort estimation. Technology Adoption … and framework improvements based on trends and best practices. What You'll Bring: Experience: 5+ years in engineering leadership roles for product development, with 9+ years in software application design, development, and maintenance within a product environment. Microsoft Tech Stack Expertise: Expert proficiency in .NET, C#, ASP.NET MVC, and enterprise-scale Microsoft SQL Server (design, development, performance tuning … DevOps automation. Proficiency with Microsoft Visual Studio IDE and Azure DevOps. Architecture & Scalability: Working experience with scaled software architecture and domain concepts like performance, redundancy, failover, and vertical scaling. API Expertise: Proficient in API design, development, and production operations. Problem-Solving & Communication: Strong analytical, problem-solving, and communication skills, with the ability to translate technical concepts and More ❯

an intelligence that feels, interprets, and eventually responds to the material world. Apoha sits at the cutting edge of biophysics, ML, and materials science, producing unique datasets to help design and formulate materials. At Apoha, software engineering isn’t just about writing code — it’s about creating the foundation for a breakthrough technology to thrive. As an engineer here … as they are by collaborating with scientists to bring a fundamentally new technology to life. What You’ll Do Own and drive major parts of our software stack — from design and architecture to implementing scalable solutions across the tech stack. Lead the design and implementation of a novel data analysis platform that brings together cutting-edge analytics, ML … is absolutely essential — you care deeply about both the what and the how. Proven expertise in at least a few of the following areas: designing scalable services, cloud infrastructure, API design and implementation, database design, and front-end frameworks. Ability to design and implement features end-to-end, with an eye for shipping fast, iterating often More ❯

to announce we’re recruiting for a talented Senior Java Back End Developer to join our excellent team, based in Bank, London. The Senior Java Back End Developer will design, develop, test and support capabilities in our digital experience platform to create competitive advantage for SThree, as part of a small software development team. About us SThree is the … markets: Recruiting highly skilled professionals and discovering life-changing jobs for the unsung heroes who will positively shape our future. What are the day-to-day tasks? Hands-on design, development and testing of solutions, adhering to SThree’s architectural principles, policies, and guidelines. Work with business stakeholders to understand opportunities and to design solutions that deliver the … required outcomes. Work with other technology teams to design and deliver end-to-end capabilities. Integrate solutions with other systems in SThree’s technology landscape, for example CRM and ERP systems. Provide support to users and resolve systems issues. Maintain infrastructure-as-code to build environments and applications. Focus on automation across infrastructure, testing, deployment, operations, and security. Coach More ❯

the estate. You’ll be working closely with infrastructure, architecture, and infosec teams to support high-availability production systems. The role also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# … Comfortable working with legacy systems and large enterprise environments Confident leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices Greenfield REST API design including HATEOAS implementation Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join More ❯

Collaborate with designers to implement responsive and user-friendly interfaces Integrate UI components with APIs and databases Gather and refine specifications and requirements based on technical requirements or UX design Debug errors, troubleshoot issues, and perform routine performance optimizations Implement and maintain database structures and queries Ensure the security and integrity of the full stack systems Stay updated on … 5+ years of experience in full-stack development. Experience with React, Angular, or Vue.js. Familiarity with Django, Spring Boot, or Express.js. Knowledge of SQL and NoSQL databases. Understanding of API design and development. Experience with version control (e.g., Git) and cloud platforms (AWS, Azure, Google Cloud). Expertise and experience in implementing AI tools Nice to Have Proficiency … flexible hours Dedicated Focus Hours : Uninterrupted work time Competitive Salary : Adjusted based on your region Performance Bonuses : Rewarding excellence Global Projects : Work with leading brands FUTURESIGHT is a digital design studio, digital marketing agency, and co-founder of a fast-growing international digital group that associates with hundreds of experts worldwide. Our passion for great user experiences and viable More ❯