176 to 200 of 271 API Design Jobs in the UK

as it underpins much of the interactive, modern front-end experience our users rely on. You will also work with Nest.js or Node.js for backend development, contributing to the design of APIs, data integrations, and overall system architecture. What you will be doing • Creating responsive, maintainable user interfaces using Next.js and related modern frameworks • Designing and implementing backend services … and TypeScript across front-end and back-end development • Proven expertise in building and maintaining applications with Next.js • Experience with Nest.js or Node.js for backend services • Proficiency in RESTful API design and integration • A solid understanding of both SQL and NoSQL databases • Experience with cloud platforms such as AWS or Azure • Familiarity with Git and CI/CD More ❯

a single intelligent platform. We’ve been doing this since 2002, and today we’re driving forward a major migration to Azure, combining legacy .NET applications with new Blazor, API and data-driven solutions. The Role We’re looking for a skilled .NET Developer to join our small, senior-led team. This is a hands-on role where you … ll be involved in everything from legacy migration to greenfield product development. You’ll work closely with our Technical Director and senior developers to design, build, and deploy robust applications that power personalised customer communications across the travel sector. Key Responsibilities Develop and maintain applications in C#, .NET, SQL Server, and Blazor Migrate older Web Forms systems into modern … Azure-based solutions Design and consume APIs using Entity Framework Core Work across front-end and back-end components (HTML, CSS, JavaScript) Collaborate on architecture, planning and continuous deployment pipelines Contribute to R&D projects, driving new innovation About You You’re a self-sufficient, full-stack developer who loves to solve problems, modernise systems, and build high-quality More ❯

Solution Architect (Software) £75,000 per annum Remote VIQU have partnered with a leading financial services organisation who are seeking a Solution Architect to lead the design of an Azure-based platform, integrating data and processes from three separate systems. The position will play a key part in designing scalable, secure, and occasionally bespoke systems that support critical business … Working closely with development teams and senior stakeholders, the role will shape the technical direction of the organisation's core systems. Job Duties of the Solution Architect: Lead solution design across multiple core systems and applications focused on transactional, financial & case management. Work closely with senior (Head of to C-suite) to shape the technical direction of the platform. … using APIs, microservices, and event-driven patterns (Kafka). Manage multiple projects simultaneously. Produced well-articulated documentation. Ensure architectural governance, scalability, and security across all projects. Champion modern software design practices within Agile delivery teams. Balance new technology adoption with legacy system integration. Key Requirements of the Solution Architect: Proven experience as a Solution Architect, ideally focusing on case More ❯

We believe in the power of ingenuity to build a positive human future. We challenge where it matters and own the outcome. We combine strategic thinking, customer-centric service design, and agile engineering practices to accelerate innovation in a tech-driven world. Why consider joining our Digital & Data community? Join our Digital & Data team working alongside product, design … work with the following technologies to ensure scalable, high-performance applications: .NET (including Entity Framework 6 and Core, ASP.NET MVC and MVC Core) CSS, HTML, JavaScript/Typescript REST API design Microsoft SQL Server, MySQL, Postgres AWS What you can expect Work to agile best practices and cross-functionally with multiple teams and stakeholders. You'll be using More ❯

As Solutions Architect, you’ll act as a bridge between engineering, business, and clients, blending deep technical expertise with a sharp understanding of customer needs. Expect to lead solution design, drive proof-of-concepts, and collaborate directly with senior stakeholders on high-impact projects. Key skills as a Solutions Architect: Proven background in software engineering with a strong grasp … of API design, cloud architecture, and scalable system design. Hands-on coding experience with modern technologies including Typescript (Node.js/React), AWS, Kubernetes, GraphQL, Kafka. Track record of working directly with clients on technical solutions, RFPs, and complex integrations. Ability to build prototypes and proof-of-concepts that validate ideas and showcase value. Expertise in CRMs, e-commerce More ❯

As Solutions Architect, you’ll act as a bridge between engineering, business, and clients, blending deep technical expertise with a sharp understanding of customer needs. Expect to lead solution design, drive proof-of-concepts, and collaborate directly with senior stakeholders on high-impact projects. Key skills as a Solutions Architect: Proven background in software engineering with a strong grasp … of API design, cloud architecture, and scalable system design. Hands-on coding experience with modern technologies including Typescript (Node.js/React), AWS, Kubernetes, GraphQL, Kafka. Track record of working directly with clients on technical solutions, RFPs, and complex integrations. Ability to build prototypes and proof-of-concepts that validate ideas and showcase value. Expertise in CRMs, e-commerce More ❯

As Solutions Architect, you’ll act as a bridge between engineering, business, and clients, blending deep technical expertise with a sharp understanding of customer needs. Expect to lead solution design, drive proof-of-concepts, and collaborate directly with senior stakeholders on high-impact projects. Key skills as a Solutions Architect: Proven background in software engineering with a strong grasp … of API design, cloud architecture, and scalable system design. Hands-on coding experience with modern technologies including Typescript (Node.js/React), AWS, Kubernetes, GraphQL, Kafka. Track record of working directly with clients on technical solutions, RFPs, and complex integrations. Ability to build prototypes and proof-of-concepts that validate ideas and showcase value. Expertise in CRMs, e-commerce More ❯

As Solutions Architect, you’ll act as a bridge between engineering, business, and clients, blending deep technical expertise with a sharp understanding of customer needs. Expect to lead solution design, drive proof-of-concepts, and collaborate directly with senior stakeholders on high-impact projects. Key skills as a Solutions Architect: Proven background in software engineering with a strong grasp … of API design, cloud architecture, and scalable system design. Hands-on coding experience with modern technologies including Typescript (Node.js/React), AWS, Kubernetes, GraphQL, Kafka. Track record of working directly with clients on technical solutions, RFPs, and complex integrations. Ability to build prototypes and proof-of-concepts that validate ideas and showcase value. Expertise in CRMs, e-commerce More ❯

Stack or Backend Developer to play a key role in shaping the backend of our next-generation B2C platform. You’ll work closely with our front-end team to design and deliver robust, scalable APIs and infrastructure that power our consumer experience. What You’ll Do: Develop and maintain production-grade APIs and backend systems using Node.js. Leverage AI … and security for scale. Collaborate with front-end engineers to integrate APIs seamlessly. What We’re Looking For: Extensive experience building high-traffic consumer applications. Strong understanding of RESTful API design, database optimization, and security. Proven AI-assisted development workflow. Ability to work autonomously within established technical frameworks. Nice to Have: React/Next.js, Azure, Payload CMS, microservices More ❯

developing cutting-edge wearable and connected health technology thats transforming how specific physiological conditions are monitored and managed. Their intelligent devices are redefining possibilities in patient care, blending innovative design with real-world impact. As part of their continued growth, they are now seeking a highly skilled Full Stack Developer to join their growing team. This is a fantastic … opportunity for an experienced engineer who enjoys working across the stack, contributing to the design, development, and deployment of innovative web and mobile applications that support next-generation connected medical systems. Youll work closely with technical and clinical teams to translate complex requirements into scalable, user-focused solutions while helping to shape the companys software architecture and development practices. … Key Responsibilities: Design, develop, and maintain scalable and secure web and mobile applications using Nuxt, Vue, and Ionic/Vue. Build and integrate APIs across mobile, web, and cloud platforms. Ensure performance, scalability, and security of deployed applications. Collaborate with firmware, hardware, and data teams to deliver end-to-end solutions. Write clean, testable, and well-documented code following More ❯

finding and taking on a feature or project simply because that problem needs to be solved and shipped. But that individual must work together with different engineering teams, UI design, product teams, and business leadership to make things happen, which means that engineers succeed here because they can maintain that independent spirit and motivation within a deeply collaborative environment. … OpenGL, DirectX, or any other graphics APIs Experience writing functional and integration tests Good understanding of Core OS concepts like memory management and multi-threading A good understanding of API design, considerations and trade-offs Consumer electronics experience building Media/Content and/or Ad product Strong verbal and written communication skills (this role involves frequent communication More ❯

team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯

team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯

team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯

vision. Other Highly Desirable, But Not Essential Skills Are Background in Software development, data science, or data engineering. Exposure to cloud platforms (e.g., AWS, Azure, GCP). Understanding of API design, microservices architecture, or event-driven systems. Experience in B2B enterprise software environments with complex stakeholder landscapes. Product management certification (e.g., CSPO, Pragmatic Institute, AIPMM). Degree-educated More ❯

Strong ability to integrate with REST APIs, manage secure authentication flows, and handle offline scenarios Basic understanding of backend systems (e.g. Node.js, AWS) to debug issues and contribute to API design discussions Proficient in Git, with best practices for branching, tagging, and changelogs Comfortable using tools like Jira, TestRail, and writing technical documentation Experience working in cross-functional 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 ❯

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 ❯

mass manufacturing system. This is a unique opportunity to contribute to the future of additive manufacturing. The Role As a Software Engineer, you’ll work across the stack to design and deliver high-performance systems used in production environments worldwide. You’ll collaborate with hardware, R&D, and product teams to build operator-facing UIs, scalable back-end services … ideas and feedback to the technical roadmap About You Background as a full-stack engineer, ideally in an industrial or product-led environment Experience delivering complex software systems from design through deployment Hands-on expertise in TypeScript, Node.js, and a front-end framework (ideally Angular) Understanding of API design and operator-facing UI development Strong debugging, problem … solving, and system design skills Excellent communication and collaboration skills with R&D and hardware teams What’s on Offer Salary: £60,000 – £65,000 DOE Enhanced pension contribution 24+ days holiday entitlement Electric vehicle and cycle schemes with free on-site charging Free on-site gym access State-of-the-art 3D printing and prototyping facilities A collaborative More ❯

mass manufacturing system. This is a unique opportunity to contribute to the future of additive manufacturing. The Role As a Software Engineer, you’ll work across the stack to design and deliver high-performance systems used in production environments worldwide. You’ll collaborate with hardware, R&D, and product teams to build operator-facing UIs, scalable back-end services … ideas and feedback to the technical roadmap About You Background as a full-stack engineer, ideally in an industrial or product-led environment Experience delivering complex software systems from design through deployment Hands-on expertise in TypeScript, Node.js, and a front-end framework (ideally Angular) Understanding of API design and operator-facing UI development Strong debugging, problem … solving, and system design skills Excellent communication and collaboration skills with R&D and hardware teams What’s on Offer Salary: £60,000 – £65,000 DOE Enhanced pension contribution 24+ days holiday entitlement Electric vehicle and cycle schemes with free on-site charging Free on-site gym access State-of-the-art 3D printing and prototyping facilities A collaborative More ❯

mass manufacturing system. This is a unique opportunity to contribute to the future of additive manufacturing. The Role As a Software Engineer, you’ll work across the stack to design and deliver high-performance systems used in production environments worldwide. You’ll collaborate with hardware, R&D, and product teams to build operator-facing UIs, scalable back-end services … ideas and feedback to the technical roadmap About You Background as a full-stack engineer, ideally in an industrial or product-led environment Experience delivering complex software systems from design through deployment Hands-on expertise in TypeScript, Node.js, and a front-end framework (ideally Angular) Understanding of API design and operator-facing UI development Strong debugging, problem … solving, and system design skills Excellent communication and collaboration skills with R&D and hardware teams What’s on Offer Salary: £60,000 – £65,000 DOE Enhanced pension contribution 24+ days holiday entitlement Electric vehicle and cycle schemes with free on-site charging Free on-site gym access State-of-the-art 3D printing and prototyping facilities A collaborative More ❯

role in our success. Your Role: Bridging Development & Customer Success As a Firmware Support Engineer, you will be responsible for the end-to-end lifecycle of our firmware, from design and development to post-deployment support. Your expertise in Modbus RTU/TCP and M-Bus will be critical. Key Responsibilities: Design & Development: Create, develop, and test firmware … Customer-Facing Support: Act as the primary technical contact for customers, providing clear, expert support on our products and protocols. Hardware Collaboration: Work with hardware teams; knowledge of PCB design and assembly is a plus for effective troubleshooting. Full Lifecycle Involvement: Participate in requirements definition, unit testing, API design, and maintaining documentation in Confluence. What We're … debugging complex system issues. Strong communication skills, with the ability to explain technical concepts clearly to customers and colleagues. Desirable Skills: Experience with IoT device development. Familiarity with PCB design, assembly, and troubleshooting. Knowledge of test automation frameworks. What We Offer You: Competitive Salary: A competitive package of up to £50,000, dependent on your experience. Specialist Role: Become More ❯

environments, enjoy mentoring engineers, and have a solution-focused mindset? Were partnering with a leading global consulting and technology firm to find a Technical Architect who will: Lead the design and delivery of backend services and APIs Mentor and manage a team of 3+ junior engineers Drive best practices in CI/CD, DevOps, and observability Collaborate across product … frontend, and data teams to deliver end-to-end solutions What were looking for: Strong backend experience: .NET, Java, Node.js, or Python Proven API design, database, and cloud platform skills Hands-on leadership and team management experience Experience in startup or high-growth environments is a big plus Why this role? Join a global consulting & technology leader Be More ❯

enjoy mentoring engineers, and have a solution-focused mindset? We’re partnering with a leading global consulting and technology firm to find a Technical Architect who will: Lead the design and delivery of backend services and APIs Mentor and manage a team of 3+ junior engineers Drive best practices in CI/CD, DevOps, and observability Collaborate across product … frontend, and data teams to deliver end-to-end solutions What we’re looking for: Strong backend experience: .NET, Java, Node.js, or Python Proven API design, database, and cloud platform skills Hands-on leadership and team management experience Experience in startup or high-growth environments is a big plus Why this role? Join a global consulting & technology leader More ❯

financial services. We're looking for an experienced eFX Software Engineer to build secure, high-performance trading systems in a collaborative, inclusive, and agile environment. What you'll do: Design and develop low-latency, fault-tolerant trading architectures Lead complex software initiatives using modern Java patterns (low-GC, lock-free) Collaborate across teams to deliver robust trading platforms and … optimisation, and CPU/memory management In-depth knowledge of networking protocols (TCP, UDP, Multicast, FIX) Experience in electronic/algorithmic trading and FX products Background in automated testing, API design, and DevOps workflows Ability to translate business needs into scalable technical solutions Flexible working options available. This is your chance to work on impactful projects and shape More ❯