51 to 75 of 78 API Design Jobs in England

backend expertise with Kotlin and Spring Boot (ESSENTIAL) Skilled in designing and maintaining microservices architectures . Confident working with SQL databases (PostgreSQL, MySQL or equivalent). Understanding of RESTful API design and third-party integrations. Experience with testing frameworks , debugging, and performance optimisation. Familiarity with AWS, Docker/Kubernetes and CI/CD pipelines (desirable) Key Responsibilities: Develop … and microservices . Build and optimise SQL schemas and queries for performance and scalability. Integrate APIs and third-party services into core systems. Collaborate with cross-functional teams to design scalable, maintainable software solutions . Participate in code reviews , contributing to team standards and documentation. Support production deployments, monitoring, and issue resolution. Continuously improve application performance, reliability, and user More ❯

across engineering, product, security, professional services and customer facing teams Highly advantageous experience includes: regulated environments, multi cloud operations, AI or ML integration, multi region deployments, education sector systems, API first platforms, legacy to modern engineering uplift Responsibilities for Head of Engineering: Lead and develop engineering managers and technical leads, embedding a culture of quality, innovation and customer focus … CTO and wider business teams to ensure delivery aligns with strategic priorities Collaborate with sales, customer experience, professional services and implementation teams to support customer transitions Embed security by design in collaboration with information security and compliance teams Provide architectural direction for SaaS migration, cloud native evolution, microservices, API design and AI engineering methodologies Guide the introduction More ❯

across engineering, product, security, professional services and customer facing teams Highly advantageous experience includes: regulated environments, multi cloud operations, AI or ML integration, multi region deployments, education sector systems, API first platforms, legacy to modern engineering uplift Responsibilities for Head of Engineering: Lead and develop engineering managers and technical leads, embedding a culture of quality, innovation and customer focus … CTO and wider business teams to ensure delivery aligns with strategic priorities Collaborate with sales, customer experience, professional services and implementation teams to support customer transitions Embed security by design in collaboration with information security and compliance teams Provide architectural direction for SaaS migration, cloud native evolution, microservices, API design and AI engineering methodologies Guide the introduction More ❯

intelligent, connected life-safety products. This isn't just about writing code, you'll help define the digital backbone of an entirely new product line. What You'll Do Design and develop backend services using Node.js and Go Build modern, responsive UIs with Svelte Develop scalable APIs and cloud-native services that interface with embedded devices in the field … years full-stack development experience Proficiency in Node.js and Golang Experience using C for systems-level tasks Proficiency with modern front-end frameworks (Svelte strongly preferred) Experience with microservices, API design, and cloud hosting platforms Good understanding of SQL or NoSQL databases Strong architectural mindset with ability to influence product design Nice to Have: Bachelor's degree More ❯

ASAP What we're looking for: 4+ years' experience in software engineering (SaaS or start-up background preferred) Strong proficiency in Python and C#, with hands-on experience in API design and cloud architecture (Azure). Experience with Excel add-ins or Office JavaScript APIs is highly desirable. Exposure to vectorization, RAG (Retrieval-Augmented Generation), or AI-driven … Background or interest in commercial real estate technology. Self-starter with excellent communication skills and the ability to operate autonomously in a dynamic, growing business. What you'll do: Design & Develop: Build and maintain robust back-end services and APIs powering the company's automation suite. Integrate Smartly: Enhance and expand integrations across Microsoft 365 applications (Excel, Word, PowerPoint … . Architect Systems: Help design scalable, secure, and high-performance data infrastructure. Collaborate: Partner closely with the founding team and business stakeholders to translate complex workflows into elegant technical solutions. Lead by Example: Take control of the project, uphold code quality, and drive best practices across the stack. Shape the Future: Contribute to the long-term technical roadmap and More ❯

solutions for both public and private sector programmes - and we're looking for an Integration Engineer to join our growing Software & Integration team. As an Integration Engineer, you'll design, build, and document integrations across multiple cloud platforms, enabling seamless data flow between critical systems. You'll collaborate with a diverse team of software engineers, cloud architects, business analysts … and QA specialists to deliver scalable, secure, and maintainable integration solutions that drive real-world impac t. Design, develop, and implement integrations in AWS and Azure , including low-code environments. Hands-on experience with low-code/no-code integration platforms (AWS, Azure, Power Automate, or MuleSoft Composer). Strong understanding of cloud architectures in AWS and/or … Azure. Familiarity with API design , REST/SOAP services , and event-driven architectures . Proven ability to document technical solutions and data flows. Good knowledge of DevOps principles , CI/CD , and version control . Experience integrating systems such as ServiceNow, SAP, Salesforce, or Pega .If you're passionate about Integration - this is a project you'll want More ❯

Solutions Architect (Software) £75,000 per annum Remote VIQU have partnered with a leading financial services organisation who are seeking a Solutions Architect to lead the design of a greenfield system due to their on going company growth. This individual must have experience designing high volume transactional systems (payment networks, IoT, banking, energy systems ect.), designing microservices architecture, have … Architect, ideally focusing on high volume transactional systems, and system integrations. Experience with either case management or workflow automation tools. Strong background with cloud microservices architecture. Deep understanding of API design, microservices, and event-driven architectures. Must be able to pivot across varied contexts & multitask effective Excellent stakeholder management and communication skills, with experience of working with C … skills, able to work under pressure and overcome challenges. Experience with Pega case management tools would be a nice to have. Job Duties of the Solutions Architect: Lead solution design across core software systems. Work closely with senior (Head of to C-suite) to shape the technical direction of the platform. Produce high-quality documentation that serves both technical More ❯

in the Cloud, and our IoT devices that interface with Mytos hardware to manufacture cells. You'll contribute across a variety of technologies and paradigms, leaning how to research, design, implement, maintain, and evolve product functionality giving users powerful tools to customise and monitor cell growth protocols. Your work will directly impact how quickly and effectively new therapies and … on the nuances of stem cells, to the basics of fluid mechanics. Be given a lot of autonomy, responsibility, and ownership of product problems and the technical solutions you design and deliver to address customer needs. What We're Looking For (depending on experience level) Are early in your software career and want to join an environment that gives … for customers and colleagues. Experience with full-stack web development using TypeScript or other typed languages. Experience with modern frontend frameworks (React preferred). Experience with backend development and API design preferred). Experience working with databases (PostgreSQL and Prisma or similar ORM experience ideal). Our technologies Frontend (Netlify): React, TypeScript, GraphQL, Storybook Backend (AWS & Heroku): NodeJS More ❯

fast to take things to the next level. Youll join as a Senior Backend Engineer , taking ownership of complex Python/Django services that power enterprise decarbonisation. Expect to design elegant APIs, tackle data-heavy challenges, and collaborate closely with sustainability experts and product teams. What makes this special? High-performance engineering team smart, passionate, and collaborative Big mission …/CD, and plenty of greenfield challenges Youll be a great fit if you bring: 7+ years backend experience (Python expertise essential) Strong knowledge of Django (or similar) and API design Experience scaling apps, with an eye for performance and reliability A proactive, problem-solving mindset and love for collaboration Enjoy a collaborative, chic, and modern office environment More ❯

Manchester) Up to £160,000 + benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40s) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You'll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯

Manchester)Up to £160,000 + benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You'll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯

you are allocated a group: Common languages/frameworks (e.g. Go, React, Kotlin, Java etc) Platforms, Tools and/or Databases (e.g. AWS, Docker, PostgreSQL) Test-Driven Development REST API Design Leadership, Communication and Management (in the context of software teams). You'll need to be able to give nuanced answers to difficult questions, give relevant examples More ❯

experiences. Your role is to make that ecosystem work seamlessly on iOS and Android, using React Native with TypeScript. You'll work directly with backend and product engineers to design predictable APIs, shared types, and flows that stay consistent across all delivery layers. You'll care as much about state coherence and background behavior as you do about pixels. … AI endpoints through stable data contracts. Implement authentication, real-time updates, offline handling, and caching consistent with the web app. Collaborate with product and backend teams on schema evolution, API design, and feature rollouts. Ensure strong telemetry, error handling, and performance monitoring (Sentry, RudderStack). Own build, deployment, and OTA release processes for both iOS and Android. Translate … You think in sync; one product across multiple surfaces. You value predictability, not just polish. You treat mobile as part of a living architecture, not an isolated app. You design flows that stay resilient under real usage, not just happy paths. You take ownership of quality from data handling to user experience. AI at Work We actively use AI More ❯

join a high-calibre engineering culture where innovation, scale, and impact are core. Role: As an Software Engineer you will join the Agent Engineering team , owning end-to-end design, development, deployment and iteration of intelligent AI agents used by millions of users. You will work with a world-class engineering team, collaborate directly with customers (in domains such … hospitality), and shape the evolution of the agent platform. This is a hands-on role with both deep technical challenge and real business impact. In this role you will: Design, build and ship AI-agents and agent workflows that automate complex customer-facing interactions across multiple channels (chat, email, voice). Dive into the underlying systems: asynchronous architectures, multi … software engineering experience in a production setting. Strong proficiency in Python and TypeScript and experience with asynchronous programming and large-scale systems. Good understanding of modern software engineering practices: API design, modular architecture, testing, observability, continuous deployment. Comfortable diagnosing failures in deep technology stacks, using a variety of tools, logs, trace systems, metrics, etc. Preferred/Bonus Qualifications More ❯

Brief: Own the C++ microservice layer powering imaging, AI, and database capabilities for a new Windows-first (Linux-capable) platform. Responsibilities Design and implement performant C++ microservices for imaging, visualization, and AI workflows. Build APIs and integrate services with the front-end (React/Node/TypeScript). Optimise system performance across Windows and Linux environments. Requirements Expert-level … C++ with experience building microservices or high-performance systems. Background in imaging, computer vision, or AI integration. Familiarity with databases, API design, and cross-platform development. More ❯

data-heavy workloads while influencing product strategy. Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy More ❯

and data-heavy workloads while influencing product strategy.Requirements: Strong foundations in algorithms, data structures, and distributed systems Experience building and operating large-scale backend systems Expertise in system and API design, scalability, and performance tuning Proficiency in a modern backend language (Java preferred) Knowledge of cloud-native architectures, containers, and CI/CD Proven leadership in technical strategy More ❯

ready software solutions Deep technical expertise across the software stack including firmware/embedded systems, device drivers, OS-level programming (Linux, RTOS), hardware abstraction layers, system software, SDK development, API design, application software, and software tools/utilities Experience with high-speed interface technologies (PCIe, CXL, NVMe, Ethernet, or similar protocols) and system-level integration in data center More ❯

Developer to help deliver fast, intuitive, and reliable app experiences that drive conversion, engagement, and customer loyalty. Role Overview As a Senior iOS Developer, you’ll collaborate with product, design, and engineering teams to build new features, optimise performance, and ensure our apps stay ahead of Apple’s latest platform updates. You’ll work across modern Swift and legacy … latest iOS platform updates? Write clean, testable, maintainable Swift and Objective-C code? Refactor legacy components to improve performance and stability? Debug and enhance existing functionality? Contribute to scalable API design? Set up and run A/B tests to validate UX and product decisions? Manage the full release cycle via App Store and TestFlight Must-Have Skills … Nice to Have A/B testing tools (e.g., Firebase)? StoreKit, in-app purchases, payment integrations? Familiarity with Apple HIG? Experience with performance optimisation and profiling? Exposure to scalable API development Eligo Recruitment is acting as an Employment Business in relation to this vacancy. Eligo is proud to be an equal opportunity employer dedicated to fostering diversity and creating More ❯

testing activities. Key Responsibilities: Lead requirements analysis and documentation for complex digital projects. Write clear, detailed user stories for development and test teams. Specify and model data requirements, including API documentation. Facilitate workshops with stakeholders to capture business needs. Collaborate with Agile teams to ensure alignment with delivery goals. Maintain awareness of emerging technologies, including generative AI. Essential Skills … modelling. Demonstrated ability to write user stories for large development teams. Experience working in high-performing Agile or Scrum environments. Desirable Skills: Knowledge of digital transformation programmes. Familiarity with API design and documentation. Awareness of generative AI concepts. Professional certifications (e.g., BCS, IIBA) desirable but not mandatory. Please submit a copy of your CV for more information on More ❯

/Nuxt 3, Tailwind and Laravel. Expertise in Typescript and frontend testing frameworks (Cypress, Vite). Comfortable working across the stack, but love creating smooth, user-friendly interfaces. RESTful API design and can build performant endpoints. Ability to thrive in a fast-paced, startup environment where your work has visible impact. Proficiency in version control systems (Git, GitHub … What you’ll be doing You’ll be part of a team of 6-7 developers maintaining and enhancing existing software products using Vue/Nuxt.js and RESTful Laravel API’s. As Full-Stack Engineer with a definite front-end lean, you will be writing performant, testable and maintainable code. They will look for you to collaborate with UX More ❯

Linux tuning, performance profiling Background in designing high-performance architectures and distributed systems Strong grasp of FX pricing, risk, and trading workflows Solid engineering fundamentals: testing, CI/CD, API design, automation Why join? Work on mission-critical systems powering global trading Highly technical culture with genuine ownership and impact Flexibility in working hours and hybrid setup More ❯

their potential applications. Develop clear and effective data models and supporting documentation. Write and maintain user stories for large development and testing teams. Define and document data requirements and API specifications . Collaborate closely with cross-functional teams in an Agile/Scrum environment to ensure successful delivery. Essential Skills & Experience Strong core business analysis capabilities, including requirements definition … and stakeholder management. Demonstrated experience in data modelling , API documentation , and digital service delivery . Proven success working within Agile/Scrum frameworks and contributing to high-performing agile teams . Proficiency with Jira and other agile delivery tools. Prior experience working within the public sector (central or local government). Solid understanding of digital delivery practices in government … or similar settings. Desirable Knowledge Awareness of Generative AI tools and their potential applications. Experience defining and managing data requirements across large-scale systems. Familiarity with API design and documentation standards. If you're an experienced Business Analyst looking to make an impact within a digital transformation environment, we'd love to hear from you. More ❯

full stack engineer in London. Tasks Ship polished, accessible UIs in React 18 + TypeScript with Tailwind and Radix UI/shadcn. Own end-to-end feature delivery: discovery → design collaboration → implementation → release. Model complex client state with MobX/MobX State Tree and drive migrations where needed. Integrate APIs and third-party services using React Query, Axios, and … server-side TS utilities. Build reusable component patterns and enforce design-system consistency and a11y. Keep things fast: performance profiling, bundle budgets, and Vite build pipeline improvements. Raise the quality bar with tests (Vitest, Playwright/Cypress/Jest), code reviews, and observability. Improve DX: ESLint/Prettier configs, CI feedback loops, Storybook-style workflows. Requirements 2+ years building … web apps with React + TypeScript. Proven track record shipping complex UI flows with modern component libraries (Radix UI, shadcn/ui, or similar). Comfortable across the stack: API design, data contracts, and backend collaboration. Real-world state management experience (MobX, Redux, Zustand, etc.), including async workflows. Strong testing discipline (unit, integration, E2E) and solid Git-based More ❯

Have deep familiarity with Python data ecosystem Understanding of Jupyter notebooks Exposure to machine learning libraries like PyTorch, XGBoost and JAX Understanding of crypto or traditional financial markets Strong API design and documentation skills What do you get in return? Up to 250k base (depending on experience) 3 days in their new central London office Pension scheme More ❯