14 of 14 Permanent API Design Jobs in the Thames Valley

The Role As a Founding Backend Engineer, you'll be instrumental in shaping our technical infrastructure from the ground up. You'll take ownership of our existing product and design, build, and maintain the systems that power our next phase of growth, ensuring our platform is robust, secure, and scalable. This is a unique opportunity to make a significant … tools like Terraform to programmatically manage cloud resources. CI/CD Pipeline Management : Some experience setting up and maintaining automated testing and deployment workflows using GitHub Actions. Development and API Design Scaling Applications : Previous success scaling applications to handle growing user bases and increasing traffic loads. API Design : Strong knowledge of RESTful API design More ❯

establishing engineering best practices. You'll have the opportunity to make key architectural decisions and drive the technical vision for our product as we scale. Key Responsibilities: - Lead the design and development of complex features across our Next.js frontend and FastAPI backend - Architect scalable solutions at the forefront of robotics, AI, and web development - Manage and mentor a technical … team, providing code reviews, technical guidance, and career development support - Define and implement engineering standards, coding practices, and development workflows - Collaborate closely with product and design teams to translate requirements into technical specifications and delivery plans - Make key technical decisions regarding system architecture, technology choices, and infrastructure strategy - Drive technical initiatives from conception through delivery, ensuring quality and timely … technical projects or managing development teams - Deep expertise in React and Next.js with demonstrated ability to architect complex frontend applications - Strong backend development experience with Python and FastAPI, including API design at scale - Proven track record of making sound architectural decisions and technical trade-offs - Experience establishing engineering best practices, code quality standards, and team workflows - Strong understanding More ❯

Each Other The Role We are seeking a Full Stack Software Engineer with a strong focus on Java to join our growing engineering team. In this role, you’ll design, build, and maintain robust and scalable full-stack applications that power our automation and SaaS platforms. You’ll collaborate closely with product managers, designers, and fellow engineers to deliver … high-impact solutions that make automation smarter, faster, and more reliable. What You’ll Do Design, develop, and implement highly performant full-stack applications using Java and related technologies. Build and maintain scalable back-end services, APIs, and microservices. Develop responsive, intuitive front-end interfaces with modern frameworks. Translate product requirements into technical specifications. Participate in the full SDLC … planning, design, coding, testing, deployment, and support. Write clean, maintainable, well-documented code following best practices. Implement automated tests (unit, integration, and end-to-end) to ensure quality. Troubleshoot, debug, and resolve software defects and production issues. Contribute to architectural discussions to ensure scalability, security, and performance. Mentor junior engineers and foster a culture of continuous improvement. What You More ❯

Each Other The Role We are seeking a Full Stack Software Engineer with a strong focus on Java to join our growing engineering team. In this role, you’ll design, build, and maintain robust and scalable full-stack applications that power our automation and SaaS platforms. You’ll collaborate closely with product managers, designers, and fellow engineers to deliver … high-impact solutions that make automation smarter, faster, and more reliable. What You’ll Do Design, develop, and implement highly performant full-stack applications using Java and related technologies. Build and maintain scalable back-end services, APIs, and microservices. Develop responsive, intuitive front-end interfaces with modern frameworks. Translate product requirements into technical specifications. Participate in the full SDLC … planning, design, coding, testing, deployment, and support. Write clean, maintainable, well-documented code following best practices. Implement automated tests (unit, integration, and end-to-end) to ensure quality. Troubleshoot, debug, and resolve software defects and production issues. Contribute to architectural discussions to ensure scalability, security, and performance. Mentor junior engineers and foster a culture of continuous improvement. What You More ❯

Fullstack Engineer, you will be pivotal in both frontend and backend development, crafting responsive, scalable web applications. This role requires strong expertise across the stack — from UI/UX design principles to backend integrations. You will design and implement APIs using JavaScript, TypeScript, and React, ensuring seamless performance and scalability. We’re looking for a proactive and experienced … and enjoys leading complex projects from conception to delivery. You’ll be both a technical leader and a driver of innovation across the team. Key Responsibilities Data Pipeline Architecture Design and implement robust, scalable data pipelines. Optimise data flow between databases (MySQL, MongoDB) and applications. Fullstack Development Develop high-quality, scalable applications using Node.js, TypeScript, and React. Collaborate with … frameworks and state management libraries like Redux or Context API. Hands-on experience with cloud services (AWS or GCP), particularly for deploying and managing applications0. Strong understanding of RESTful API design (GraphQL experience a plus). Analytical mindset with the ability to design, optimise, and troubleshoot complex UIs and fullstack integrations. Excellent communication and leadership skills with More ❯

website maintenance job and you’ll be building the logic, architecture, and integrations that power core customer solutions. The Role Working within a small specialist backend team, you’ll design, implement, and deliver PHP-based product features and custom solutions. You’ll be involved from requirements capture through to design, build, test, and deployment — with the autonomy to … architecture Occasionally creating supporting UIs for complex functionality What We’re Looking For Deep expertise in object-oriented programming and backend architecture Strong understanding of software engineering principles and design patterns API design, development, and integration experience HTML, CSS, JavaScript Solid database knowledge (MySQL preferred) Comfortable owning projects end-to-end Linux, SaaS platforms, CRM systems The More ❯

reflects the great diversity of our real customers and users across the world. What You’ll Do Own our engineering stack from MVP to scale — backend, frontend, infra . Design architecture, choose tools, and set engineering standards. Work directly with early users to iterate quickly. Collaborate with the founding team on strategy, hiring, and scaling the tech team. Ship … high-quality, user-focused features (that change Oceans and planet) fast. What We’re Looking For 5+ years of backend expertise in Go including API design, microservices architecture, gRPC/REST services, and database design (PostgreSQL, Redis). Frontend proficiency with React/Next.js, responsive design, and modern JavaScript/TypeScript Cloud infrastructure knowledge including AWS … and opportunity. Expert in solving deep technical problems with customer outcomes top of mind. Ability to evaluate and make decisions based on a balanced assessment of key factors, including design, scalability, performance, technical debt and cost efficiency. Working highly collaboratively in a team environment. What We Offer Professional Impact & Growth Build a high-impact platform from emerging MVP to More ❯

Engineer will be responsible for both frontend and backend development, ensuring seamless integration and high performance of web applications. Responsibilities Lead technical initiatives and projects, ensuring high-quality delivery. Design and implement complex software applications, emphasizing robust and scalable solutions. Collaborate with cross-functional teams to define, design, and ship new features. Ensure code quality and maintainability through … code reviews and adherence to design patterns. Optimize the performance of web applications to ensure fast and efficient user experiences. Mentor junior engineers and promote a culture of continuous learning and improvement. Address and refactor legacy code, bringing it up to modern standards and practices. Drive changes in coding practices and standards to improve code quality and team efficiency. …/large-sized projects, particularly in single-page applications (SPA) or back-office systems. Experience in optimizing the performance of web applications. Strong knowledge of software engineering principles and design patterns. Understanding of backend technologies, including Node.js, Express, or similar frameworks. 5+ years preferred. Experience with RESTful API design and development. Familiarity with database management systems such More ❯

Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Opportunity: We’re partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients. You’ll work on the … platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS. This is a backend-first role where you’ll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High … Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments Architecting services with reliability and scalability as core principles Deploying containerised workloads in AWS via Kubernetes and Terraform Collaborating closely with DevOps, ML, and product teams to More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯

full-stack platform enabling sensitive data redaction and digital archiving. This is a chance to build innovative, scalable services that make a real-world impact across central government. Responsibilities: Design and develop secure, scalable full stack software solutions Work across 30% front-end development (React, TypeScript) and 70% back-end (Java, Spring Boot) Develop APIs, manage relational databases (PostgreSQL … documentation What we're looking for: 4+ years of experience in full stack development Expertise in Java, Spring Boot, and front-end technologies including React Strong skills in PostgreSQL, API design, and secure software deployment Comfortable working in hybrid environments using CI/CD, Docker, GitHub Actions Excellent problem-solving ability and communication skills Must be a British More ❯

right to close the advert earlier If we receive a high volume of applications. Fantastic opportunity to join our team of experienced Architects! Are you ready to lead architectural design for high-impact transformation programmes? At VWFS UK, we're on a mission to be The Key to Mobility - and we're looking for a Solution Architect to help … Digital Programme . You'll collaborate with UK and global teams to define, develop, and deliver innovative architecture solutions that drive real business outcomes. Responsibilities Lead solution architecture and design for a key business domain Develop high-level designs aligned with our architecture roadmaps and standards Define Solution Building Blocks that support our application and platform strategies Partner with … Technology, Security) Strong knowledge of enterprise integration, messaging models, and Agile/Lean architecture practices Experience with EA tools (LeanIX, Alfabet, Bizzdesign, Sparx EA) Cloud platform expertise (AWS, Azure), API design, event-driven and microservices architecture Understanding of SOAP, REST, and modern integration patterns Ability to produce high- and low-level technical designs for diverse audiences. Ideally, experience More ❯

products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services that scale globally. This is a fantastic opportunity to join a rapidly growing startup as we enter the next phase of expansion. … as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git) Strong problem-solving skills and attention to detail Comfortable working in a fast More ❯

within the organisation. Contract details: 700 DR Inside IR35 12 month contract ASAP start date Hybrid - as and when required in London (infrequent travel) Skillset: Background in Software Architecture API design (REST is preferable). ++ Designing for use with User Interfaces would be a plus. Event-driven architecture patterns Familiarity with AWS and Kubernetes (Containers) would be More ❯