1 to 25 of 87 API Design Jobs in the Thames Valley

Type: full-time Job Title: Java Full stack Software Engineer Job Description: Opportunity for talented Full Stack Software Engineer to join collaborative engineering team. This role will focus on design, architecture, and implementation of software components as well as the overall solution, utilizing concepts, and best engineering practices of microservices architecture. As Full Stack Software Engineer you play an … in delivering new products and improvements to provide our customers and partners future proof, flexible and scalable solutions, while maintaining high quality standards. You will be responsible for analysis, design, automation, engineering, research and development, implementation, following and implementing design patterns and principles, utilizing concepts of clean architecture and clean code. Primary Responsibilities: Develop and maintain server-side … and client-side applications using React, TypeScript, Java, Spring Boot, ensuring code quality, efficiency, and adherence to best practices. Design and implement scalable and efficient data structures and algorithms to optimize application performance. Ensure seamless integration of front-end and back-end components to deliver fully functional systems. Collaborate with UI/UX designers to create user-friendly interfaces More ❯

You'll Do: Build & Optimize Applications - Develop robust, scalable, and efficient web apps. Work Across the Stack - Frontend (React, Vue, or Angular) & Backend (Node.js, Python, Java, .NET). Database & API Development - Design and maintain SQL & NoSQL databases and RESTful APIs. Deploy & Maintain - Use Docker, Kubernetes, AWS, or Azure for scalable deployments. Collaborate - Work closely with product teams to More ❯

Visa. Job Description Visa is seeking a Senior Software Engineer specializing in APIs to join our Visa Recurring Payment Monitor team. This role will be primarily responsible for the design, development, documentation, testing, and release of various API components using open-source technologies. The successful candidate will collaborate closely with other Visa teams including Architecture, Operations & Infrastructure, Application … Support, Configuration Management, Client Services, and other Product Development teams. Responsibilities: Develop high-quality API code deliverables following the team’s development process and adhering to the team’s definition of done/completion. Implement best practices and Visa standards in secure coding and overall delivery processes. Review code created by other software engineers and help clear blockers to … enhance team performance. Actively participate in the agile software development process and contribute to its continuous improvement. Contribute towards functional, application, infrastructure architecture & design creation. Work closely with product owners to identify & review requirements, translate them into application design and reflect them in epics and stories. Contribute to release management, code configuration management, and continuous delivery pipeline processes. More ❯

own the strategic architectural direction and implementation, ensuring our platform is scalable, secure, and aligned with the rapidly evolving AI landscape. Key Responsibilities Provide visionary architectural leadership for the design, development, and delivery of a new generation AI-driven SaaS platform. Lead, mentor, and manage a team of Senior Full-Stack Developers and engineers, fostering a culture of technical … of commercial software development experience, with at least 3 years in a senior or technical lead role. Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding and practical application of … experience integrating AI tools, APIs, or platforms into software solutions. Domain experience in Recruitment Technology, HRTech, or closely related fields is a must. Proficient in software architecture, microservices, RESTful API design, and cloud-native development (AWS, Azure, or GCP preferred). Experience with CI/CD pipelines, automated testing, and DevOps practices. Solid grasp of security best practices More ❯

server environment, contributing to both backend and frontend development while leveraging modern cloud technologies. Key Responsibilities Develop and maintain full-stack web applications using PHP and modern frontend technologies Design and implement scalable solutions in multi-server environments Work with AWS cloud services to build robust, distributed systems Optimize database performance and design efficient data structures Implement and … making Required Skills & ExperienceBackend Development 5+ years of PHP development experience Expert-level Laravel framework knowledge Strong understanding of full HTTP workflow in multi-server environments Experience with RESTful API design and implementation Proficiency in both MySQL and PostgreSQL databases System Administration & Infrastructure Working knowledge of Linux systems (command line, file permissions, process management) Hands-on experience with … CDN implementation Experience with containerization (Docker) and orchestration tools Frontend Development Proficiency in modern JavaScript (ES6+) Experience with frontend frameworks (React, Vue.js, or similar) Strong HTML5, CSS3, and responsive design skills Understanding of build tools and asset compilation General Requirements Strong problem-solving and analytical skills Experience with version control systems (Git) Knowledge of testing frameworks (PHPUnit, Jest, etc. More ❯

server environment, contributing to both backend and frontend development while leveraging modern cloud technologies. Key Responsibilities Develop and maintain full-stack web applications using PHP and modern frontend technologies Design and implement scalable solutions in multi-server environments Work with AWS cloud services to build robust, distributed systems Optimize database performance and design efficient data structures Implement and … making Required Skills & ExperienceBackend Development 5+ years of PHP development experience Expert-level Laravel framework knowledge Strong understanding of full HTTP workflow in multi-server environments Experience with RESTful API design and implementation Proficiency in both MySQL and PostgreSQL databases System Administration & Infrastructure Working knowledge of Linux systems (command line, file permissions, process management) Hands-on experience with … CDN implementation Experience with containerization (Docker) and orchestration tools Frontend Development Proficiency in modern JavaScript (ES6+) Experience with frontend frameworks (React, Vue.js, or similar) Strong HTML5, CSS3, and responsive design skills Understanding of build tools and asset compilation General Requirements Strong problem-solving and analytical skills Experience with version control systems (Git) Knowledge of testing frameworks (PHPUnit, Jest, etc. More ❯

AWS, Azure, GCP) Proficiency in front end e.g., React, Angular, Vue.js and frameworks such as e.g., Node.js or FastAPI. Experience with databases such as MongoDB and MySQL. Familiarity with API design and development, including serverless technologies, e.g. AWS ECS/API Gateway/Lambda. A passion for space technology and a genuine interest in the space sector More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

December 2025 (Possibility of extension) Industry: Power and Gas Role Overview: Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … back-office functionalities with an emphasis on physical trading. What you will do: Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. Thought leader in respective domain, will be … the key advisor to delivery and design reviews. Handling business changes and managing stakeholder expectations Manage communication across multiple teams, vendors, and consulting staff Knowledge of deal lifecycle What you will have: Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge of Options modelling and More ❯

possibility of extension Working hours: 40 hrs/week Role Overview: Work directly with subject matter experts, product owners, designers, technical leads, and other architects to re-architect and design the next-generation Gas and Power trading platform using modern technologies, aligned with business and technology strategies. Deep knowledge of energy trading and risk management processes across front, middle … and back-office functionalities, with an emphasis on physical trading. Responsibilities: Design the architecture of modern, bespoke energy trading systems, including documenting and agreeing on key design decisions and trade-offs with stakeholders. Gather requirements, analyze, and design across functional, non-functional, technical, and operational domains. Act as a thought leader and key advisor in design … and dependency graphs. Experience with data modeling for transactional and analytic use cases, real-time reporting, data migration, and reconciliation. Familiarity with MongoDB. Hands-on experience with architecture and design patterns, including documentation of design trade-offs for commodity trading systems. Familiarity with AWS services, C#/Java, Docker, OpenShift, Kubernetes, React, and Infrastructure as Code (Terraform). More ❯

have the opportunity to work across a modern engineering environment, collaborate with agile product teams, and contribute to a high-traffic platform used by millions of customers. Key Responsibilities: Design, build, and maintain scalable, high-performance services using Kotlin or Java Provide technical leadership and mentoring to other engineers in the team Contribute to solution architecture and strategic technical … Skills & Experience 5+ years of back-end development experience using Kotlin or modern Java Expertise in microservice architectures and frameworks like Spring Boot or http4k Deep understanding of RESTful API design and integration Proven experience mentoring engineers and contributing to high-performing teams Familiarity with Agile (Scrum or Kanban), TDD, and pair programming practices Experience with CI/ More ❯

external partners. Reporting to James David (Head of Cloud and Site Reliability Engineering); you’ll take ownership of development projects — setting priorities, managing dependencies, and seeing work through from design to deployment. You’ll be; Driving forward development standards and prioritizing best coding practices including promotion of “Software Craftmanship” at OQC Gather requirements, propose solutions, build and test prototypes … through to production. Design approaches that weigh trade-offs between performance, maintainability, and scalability. Ensure your work is robust, documented, and ready for others to use and build upon. Operate within Agile frameworks like Scrum, actively collaborating, reviewing, and delivering. Stay current with industry trends in security, QA, and tooling, and share recommendations. Mentor teammates through pair programming, knowledge … We value engineering expertise and adaptability just as much as specific language skills. You’ll be confident writing modern, maintainable code with a solid grasp of data structures and design patterns. You’ll also have experience developing and testing software using contemporary practices like TDD, BDD, and contract testing, and running it in production using containers (e.g. Docker, Kubernetes More ❯

Oxa's SDLC. Conduct root cause analysis from Oxa's Shield Perception deployments and actively support the team in developing solutions that address them. Develop and contribute to the design of Safety Performance Indicators for in-use monitoring of the shield components. Work collaboratively alongside other shield perception, control, and safety engineers to address novel engineering problems that arise … Oxa's SDLC. Conduct root cause analysis from Oxa's Shield Perception deployments and actively support the team in developing solutions that address them. Develop and contribute to the design of Safety Performance Indicators for in-use monitoring of the shield components. Work collaboratively alongside other shield perception, control, and safety engineers to address novel engineering problems that arise … United Kingdom 1 week ago Reading, England, United Kingdom 6 days ago Banbury, England, United Kingdom 6 days ago Senior Embedded Software Engineer (ENG012) Lead Software Engineer (Scalability and API Design) - 95% Remote - £85k - ID41216 Reading, England, United Kingdom 1 week ago Reading, England, United Kingdom 1 week ago Newbury, England, United Kingdom 3 weeks ago Oxford, England More ❯

role supports hybrid working with 2 days being required onsite in Oxford and 3 days WFH. Ideally starting on the 1st Jan if not before. You will lead the design and implementation of enterprise integration, orchestration, and event-driven architecture solutions within cloud infrastructure. This role demands expertise in cloud architecture (particularly AWS), API design and development … SOAP APIs, GraphQL, and webhooks for integration purposes. Expertise in designing and implementing enterprise-level integration and orchestration solutions in AWS using services like EventBridge, Lambda, SNS/SQS, API Gateway, Transfer Family, AppFlow, Glue, Step Function, S3, Kinesis, MQ, and DynamoDB Streams. Expertise in designing and implementing data integration workflows using AWS services such as AWS Glue, Amazon … continuous delivery of integration solutions. Ability to manage third-party integrations, including working with external vendors and partners to ensure successful data and system integration. Key Duties of Role Design and implement enterprise integration solutions: Architect integration frameworks that connect disparate systems, ensuring smooth and reliable flow between applications and services. Design and implement enterprise orchestration solutions: Develop More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, product owners, designers, technical leads, and other architects to re-architect and design the needs of the next-generation Gas and Power trading platform using modern technologies, aligned with business and technology strategies. Deep knowledge of energy trading and risk management processes … front, middle, and back-office functionalities, with an emphasis on physical trading. Expert in designing the architecture of modern, bespoke energy trading systems, including documenting and agreeing on key design decisions and trade-offs across diverse stakeholders. Perform requirement gathering, analysis, and design across functional, non-functional, technical, and operational domains. Be a thought leader in the domain … advising on delivery and design reviews. Handle business changes and manage stakeholder expectations. Manage communication across multiple teams, vendors, and consulting staff. Have knowledge of deal lifecycle. Qualifications Key Skills Strong functional understanding of physical trading, preferably Gas and/or Power, including complex contract optionality, portfolio, and schedule optimization. Knowledge of options modeling and dependency graphs. Demonstrated capability 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 ❯

focus spans across multi-domain advancements, initially targeting the medical, education, and legal sectors. We specialize in turning innovation into impact. We are seeking an experienced Solution Architect to design and own the solution architecture for our scalable SaaS and custom products . The ideal candidate will align with the product roadmap, purpose, and feature use cases to define … role demands a strong focus on Microservices Architecture , ensuring that our solutions are scalable, configurable, and cloud-agnostic, with seamless integrations across various systems. Key Responsibilities: Microservices Focus : Architect, design, and implement a robust microservices-based solution, enabling agility, scalability, and independent service deployments. Define and own the solution architecture for the product, ensuring scalability, configurability, and cloud-agnostic … capabilities. Develop HLD (High-Level Design) and LLD (Low-Level Design) documents for the product. Create and maintain the deployment architecture , ensuring efficient and resilient deployment strategies. Design the integration architecture , including APIs, microservices, and third-party integrations. Technical Leadership: Guide engineering teams in implementing the architecture while ensuring best practices in software design, performance, and More ❯

You will be joining a friendly, dynamic and supportive team who encourage collaboration, fostering a culture of innovation. In this position you will play a key role in the design, development and testing of software applications and tools for both internal and external stakeholders. You will be assisting the Engineering Team and Product Owners in turning project requirements into … working practices and the adoption of tools that improve the efficiency and quality of development within the team. You will use your previous experience to assist in the delivery, design, implementation, configuration and testing of large and complex modules within a product. You will also seek opportunities to share your knowledge and experience with Junior Developers. The Role Will … efficiencies Work with Project and Process Owners to extend the application into new functional areas Collaborate with Business Analysts to enrich and expand requirements as well as driving product design Break down Epics into individual Stories that can be assigned to other team members About You You will be technically competent and highly experienced in software development and trouble More ❯

Software Engineer with strong Java backend experience, DevOps awareness, and proven technical leadership capabilities to join our Client’s London team. This is a high-impact role involving the design, development, and deployment of backend services that power our client’s security platform. You’ll work on systems at significant scale, leading both engineering efforts and mentoring team members … while collaborating with globally distributed teams in the US, Ireland and India. Responsibilities: Design, develop, and maintain Java-based backend services using Spring Boot , REST/GraphQL , Kafka , PostgreSQL , and RabbitMQ . Contribute to infrastructure modernisation efforts, working closely with DevOps teams on Kubernetes , CI/CD pipelines , and legacy system migrations. Innovate across the stack, taking ownership of … Requirements: 7–10+ years of professional experience in software engineering, with a strong focus on Java backend development . Solid understanding of Spring Boot , Kafka , RabbitMQ , PostgreSQL , and modern API design patterns. Hands-on experience or familiarity with DevOps tools and concepts – e.g. Kubernetes , Git-based CI/CD , cloud infrastructure (AWS/GCP/Azure). Bonus 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 ❯

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 ❯

measure and optimize their digital business card interactions. As part of this role, you’ll help migrate our backend from Flask to Django , ensuring a scalable and well-structured API design. Responsibilities Design and develop analytics and reporting tools , providing insights into user engagement and marketing performance. Build and optimize data pipelines for tracking and processing user interactions. … building analytics and marketing tools (e.g., dashboards, tracking systems, attribution models). Strong experience with Django (or Flask) and PostgreSQL . Solid understanding of data pipelines, event tracking, and API integrations . Proficiency in React, TypeScript, and frontend visualization frameworks (e.g., D3.js, Chart.js, Recharts) . Hands-on experience with AWS services (EC2, S3, CloudFormation, ECS). Experience with CI More ❯

including digital marketplace, inventory management, vehicle servicing, merchandising, and fleet ownership. Collaborative Environment: Work closely with engineering, product, technology, transformation, and business partners across the UK and Europe to design next-generation, customer-facing, software-as-a-service applications. What You'll Do: Lead and Innovate: Drive collaborative solutioning efforts to understand business needs, define target state architecture, and … and Implement: Define cloud-native architecture solutions and collaborate with Product and Engineering teams for their implementation. Guide and Mentor: Lead teams of experienced architects and delivery leaders, facilitating design discussions, driving technical design reviews, and ensuring successful delivery. Communicate and Influence: Articulate solution designs to all levels of the organization and drive successful delivery throughout discovery, development … or relevant industry experience. Technical Expertise: Strong software engineering background with hands-on experience in .NET, AWS, SQL & No-SQL databases, and event-driven systems. Proficiency in coding, REST API design, microservice implementation, and container technologies like Docker and Kubernetes. Interpersonal Skills: Excellent communication skills, both verbal and written, with the ability to work with technical and non More ❯