101 to 125 of 128 API Design Jobs in the UK

a strong focus on performance, scalability, and reliability. You'll lead technical discussions, mentor junior engineers, and collaborate across teams to deliver robust, secure, and efficient solutions. Key Responsibilities Design, build, and maintain high-performance backend services using Go. Develop and optimise RESTful APIs that power the platform and integrations. Lead architecture and implementation strategy discussions. Optimise system and … database performance (schema design, query tuning, etc.). Ensure backend services meet security, compliance, and reliability standards. Mentor junior engineers and contribute to best practices and documentation. Collaborate with QA, DevOps, Product, and Technical Services teams. Stay current with emerging technologies and industry trends. What We're Looking For 5+ years of backend engineering experience, including 3+ years with … Go. Strong experience with RESTful API design and distributed systems. Solid understanding of SQL/NoSQL databases and performance optimisation. Experience with RBAC, auditing, and secure system design. Familiarity with Agile/Scrum methodologies and Linux-based environments. Excellent communication, problem-solving, and mentoring skills. Bonus: Knowledge of virtualization, storage systems, or networking protocols. Why Join? Fully remote 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 ❯

Experience working closely with product teams and designing for real users Strong frontend skills (JavaScript/Typescript, React/Angular, HTML) and backend expertise (Node.js, Python) Proven experience in API design and system integration Proficiency with Microsoft Azure and familiarity with databases, IAM, containers, and deployment tools Comfortable with rapid prototyping tools (e.g., Figma) Solid understanding of the … platforms Support low-code solutions, especially within Power Platform Agile & Iterative Development Work within a modern agile framework Participate in backlog grooming, technical scoping, and story writing Engage in design sessions, code reviews, and retrospectives Security, Quality & Operations Ensure compliance with security, privacy, and operational standards Monitor and improve the health of production code Enhance testing and deployment pipelines More ❯

commercial experience with PHP MVC-based frameworks (Laravel, Zend, or Symfony) SQL/NoSQL Version control (Git) HTML5, CSS3 JavaScript Strong communicator (both written and verbal) Linux Shell (Bash) API design/development AWS Docker The role is paying up to £65,000 (DOE) + benefits including annual bonus & private medical insurance, and will be a hybrid working More ❯

engines, planning systems, and orchestration platforms (e.g., LangChain, AutoGen, CrewAI). Strong grasp of DevOps, CI/CD, cloud platforms (Azure, AWS, GCP), and containerization. Knowledge of data architecture, API design, and integration patterns. Soft Skills Excellent communication and stakeholder management. Strategic thinker with a strong bias for execution. Ability to lead through influence and navigate complex organizational More ❯

engines, planning systems, and orchestration platforms (e.g., LangChain, AutoGen, CrewAI). Strong grasp of DevOps, CI/CD, cloud platforms (Azure, AWS, GCP), and containerization. Knowledge of data architecture, API design, and integration patterns. Soft Skills Excellent communication and stakeholder management. Strategic thinker with a strong bias for execution. Ability to lead through influence and navigate complex organizational More ❯

engines, planning systems, and orchestration platforms (e.g., LangChain, AutoGen, CrewAI). Strong grasp of DevOps, CI/CD, cloud platforms (Azure, AWS, GCP), and containerization. Knowledge of data architecture, API design, and integration patterns. Soft Skills Excellent communication and stakeholder management. Strategic thinker with a strong bias for execution. Ability to lead through influence and navigate complex organizational More ❯

engines, planning systems, and orchestration platforms (e.g., LangChain, AutoGen, CrewAI). Strong grasp of DevOps, CI/CD, cloud platforms (Azure, AWS, GCP), and containerization. Knowledge of data architecture, API design, and integration patterns. Soft Skills Excellent communication and stakeholder management. Strategic thinker with a strong bias for execution. Ability to lead through influence and navigate complex organizational More ❯

engines, planning systems, and orchestration platforms (e.g., LangChain, AutoGen, CrewAI). Strong grasp of DevOps, CI/CD, cloud platforms (Azure, AWS, GCP), and containerization. Knowledge of data architecture, API design, and integration patterns. Soft Skills Excellent communication and stakeholder management. Strategic thinker with a strong bias for execution. Ability to lead through influence and navigate complex organizational More ❯

should reach out. Come join us to build the next generation of great streaming players and TVs at a low cost for our customers. What you'll be doing Design and develop OS features in a multi-process environment that are fast, efficient and maximize platform flexibility Demonstrate excellence in C++ development and deliver high-performance, ultra-reliable software … optimisation, performance & memory. Implement features with the abstractions necessary to run on a variety of hardware Design for performance and ensure that your code is fast and resource efficient Demonstrate the ability to dig-deep to find solutions to new and challenging problems We're Excited If You Have 5+ years of experience developing Linux-based consumer electronic products … Excellent modern C++ programming skills Proven track record of success with embedded system development projects Experience in API design and developing portable code Deep understanding of multi-threaded development and concurrency management Experience with Linux IPC mechanisms Ability to architect, implement, and test systems for performance Bachelor's or Master's in Computer Science, or equivalent engineering experience More ❯

Backend Engineer (Python/Django) | Hybrid 1 | Full-time We're looking for a Mid-Level Backend Engineer to join a fast-growing tech team. You'll design, build, and maintain scalable Back End services and APIs, contributing to high-performing, secure, and user-friendly applications. What you'll bring: 3+ years Back End development in production Strong Python … Django (4+ years) SQL database expertise & optimisation skills REST API design experience CI/CD, Git, and testing familiarity Strong collaboration and time management skills Nice to have: Fintech, payments, E-commerce, or AI coding assistant experience. The company is a very successful payment platform that is recruiting because of growth. In addition to the base salary there … offer a good Bonus, Private Health care, Pension plan and 26 days holidays excluding Bank Holidays. Role responsibilities: Collaborate with all relevant departments to deliver end to end features Design, build and maintain scalable Back End services and APIs Using Git for version control and tracking code changes Write secure, maintainable and well documented code Diagnosing and resolving system More ❯

Backend Engineer (Python/Django) | Hybrid 1 | Full-time We're looking for a Mid-Level Backend Engineer to join a fast-growing tech team. You'll design, build, and maintain scalable Back End services and APIs, contributing to high-performing, secure, and user-friendly applications. What you'll bring: 3+ years Back End development in production Strong Python … Django (4+ years) SQL database expertise & optimisation skills REST API design experience CI/CD, Git, and testing familiarity Strong collaboration and time management skills Nice to have: Fintech, payments, E-commerce, or AI coding assistant experience. The company is a very successful payment platform that is recruiting because of growth. In addition to the base salary there … offer a good Bonus, Private Health care, Pension plan and 26 days holidays excluding Bank Holidays. Role responsibilities: Collaborate with all relevant departments to deliver end to end features Design, build and maintain scalable Back End services and APIs Using Git for version control and tracking code changes Write secure, maintainable and well documented code Diagnosing and resolving system More ❯

one or more of the following languages: C, C++, Rust. 4+ years of experience in embedded software development in C. Knowledge of Computer Science fundamentals in data structures, algorithm design, problem-solving, and complexity analysis. Strong grounding in embedded software architecture, with a focus on maintainability, modularity, fault-tolerance and testability. Confident and experienced with automated testing, including unit … integration and system tests, mocking and automation frameworks. An understanding of API design and the creation of clear, stable abstractions for hardware/firmware interaction. Skilled at debugging in constrained environments and using hardware/software debugging tools. A proven track record of innovation and quality software development throughout the entire software product lifecycle. Ability to solve complex More ❯

one or more of the following languages: C, C++, Rust. 4+ years of experience in embedded software development in C. Knowledge of Computer Science fundamentals in data structures, algorithm design, problem-solving, and complexity analysis. Strong grounding in embedded software architecture, with a focus on maintainability, modularity, fault-tolerance and testability. Confident and experienced with automated testing, including unit … integration and system tests, mocking and automation frameworks. An understanding of API design and the creation of clear, stable abstractions for hardware/firmware interaction. Skilled at debugging in constrained environments and using hardware/software debugging tools. A proven track record of innovation and quality software development throughout the entire software product lifecycle. Ability to solve complex More ❯

s APIs and SDKs, ensuring they empower customers to programmatically interact with our platform in scalable, secure, and developer-friendly ways. Shape the developer experience: Partner with engineering and design to ensure our APIs and SDKs are consistent, intuitive, well-documented, and performant. Interoperate with the modern data stack: Ensure first-class integration with data warehouses, lakes, and real … time streaming platforms Support enterprise scale: Design for performance, reliability, security, and compliance requirements of large enterprises. Engage with customers and partners: Gather feedback from data engineers, architects, and developers from both our customer base and partner ecosystem to ensure our APIs and SDKs solve real-world problems that fit naturally into enterprise data ecosystems. Establish success measures: Define … and track adoption metrics, usage analytics, and developer satisfaction scores to ensure continuous improvement. Stay ahead of industry trends: Monitor advancements in data integration, streaming, and SDK/API design to keep Ataccama competitive and developer-friendly. Is This You? Industry experience: Experience in B2B and SaaS product companies is a must Proven experience: 5-7+ years More ❯

PHP and Laravel. Strong knowledge of Azure Frontend: HTML, CSS JavaScript, jQuery, and GSAP. Backend: Expertise in PHP, Laravel, and MySQL/MariaDB. APIs: Experience with REST and SOAP API design and integration. Version Control: Strong GIT proficiency. Server Management SEO: Deep knowledge of on-page SEO principles. Proven success in fast-paced settings managing multiple projects in More ❯

PHP and Laravel. Strong knowledge of Azure Frontend: HTML, CSS JavaScript, jQuery, and GSAP. Backend: Expertise in PHP, Laravel, and MySQL/MariaDB. APIs: Experience with REST and SOAP API design and integration. Version Control: Strong GIT proficiency. Server Management SEO: Deep knowledge of on-page SEO principles. Proven success in fast-paced settings managing multiple projects in More ❯

PHP and Laravel. Strong knowledge of Azure Frontend: HTML, CSS JavaScript, jQuery, and GSAP. Backend: Expertise in PHP, Laravel, and MySQL/MariaDB. APIs: Experience with REST and SOAP API design and integration. Version Control: Strong GIT proficiency. Server Management SEO: Deep knowledge of on-page SEO principles. Proven success in fast-paced settings managing multiple projects in More ❯

or scale-up ( ideally from Seed to Series A) Hands-on expertise with OpenAI integrations or other LLM-based solutions Technical experience with Node.js, Python, and SQL Experience with API design and development for both internal and external use cases Experience designing and scaling data pipelines and working with large datasets Track record of building and managing teams More ❯

the office and two days at home (or pro-rata for part-time employees). This policy may be changed at the Company's discretion. What Will You Do? Design, implement, and manage cloud-based infrastructure solutions using AWS native services. Develop and maintain CI/CD pipelines to automate build, test, and deployment processes. Monitor system performance and … Architect) is a plus. Bachelor's degree preferred in Technology or a similar field (or equivalent experience). Strong understanding of software development principles, including object-oriented programming and design patterns. Proficiency in Python for developing automation scripts, tools, and applications. Experience with version control systems, particularly Git, and understanding of branching strategies. Familiarity with software testing methodologies and … frameworks, such as unit testing and integration testing. Ability to write clean, maintainable, and efficient code. Experience with code review processes and tools. Understanding of microservices architecture and RESTful API design. Knowledge of security best practices in software development and deployment. Experience with monitoring and logging tools to ensure application performance and reliability. Familiarity with Agile methodologies and experience More ❯

Responsible for the creation and development of software, including but not limited to: All aspects of the full software development life cycle, including requirements analysis, design, development, testing, documentation and training. Deliver robust, clean, high quality full stack applications. Creation of functional designs and specifications. Rigorous approach to testing, including writing unit and integration tests. Support the creation of … required quality standards. Experience and Qualifications Required Experience in full stack development. Experience in frontend development with React and Next.js. Experience in backend development with Node.js. Experience in database design with PostgreSQL. Strong architectural skills and understanding of RESTful API design. Good analytical and problem-solving ability. Attention to detail and a passion for producing high quality software More ❯

is fully remote. Qualifications & Skills required: 3+ years of experience in software development, with a strong focus on Go ( Golang ). Solid understanding of backend architecture, distributed systems and API design. Solid understanding of DevOps, CI/CD, infrastructure as code and cloud platforms. Excellent communication skills and a true team player Experience working with SaaS platforms or automation … a plus. Comfortable working in agile environments (Scrum or Kanban). Experience with microservices, event-driven systems, and containerisation (Docker, Kubernetes) - DESIRABLE Background in product management or user-centred design - DESIRABLE Familiarity with performance optimisation and data modelling - DESIRABLE What you'd be doing: Develop backend services and components using Go. Design and implement APIs, data models and More ❯

is fully remote. Qualifications & Skills required: 3+ years of experience in software development, with a strong focus on Go ( Golang ). Solid understanding of backend architecture, distributed systems and API design. Solid understanding of DevOps, CI/CD, infrastructure as code and cloud platforms. Excellent communication skills and a true team player Experience working with SaaS platforms or automation … a plus. Comfortable working in agile environments (Scrum or Kanban). Experience with microservices, event-driven systems, and containerisation (Docker, Kubernetes) - DESIRABLE Background in product management or user-centred design - DESIRABLE Familiarity with performance optimisation and data modelling - DESIRABLE What you'd be doing: Develop backend services and components using Go. Design and implement APIs, data models and More ❯

is fully remote. Qualifications & Skills required: 3+ years of experience in software development, with a strong focus on Go ( Golang ). Solid understanding of backend architecture, distributed systems and API design. Solid understanding of DevOps, CI/CD, infrastructure as code and cloud platforms. Excellent communication skills and a true team player Experience working with SaaS platforms or automation … a plus. Comfortable working in agile environments (Scrum or Kanban). Experience with microservices, event-driven systems, and containerisation (Docker, Kubernetes) - DESIRABLE Background in product management or user-centred design - DESIRABLE Familiarity with performance optimisation and data modelling - DESIRABLE What you'd be doing: Develop backend services and components using Go. Design and implement APIs, data models and More ❯

a full stack role where you will use C#, .NET, TypeScript, and React to build modern web applications while supporting existing desktop products. As a Software Engineer, you will: Design, develop, and maintain software using C#, .NET, TypeScript, and React. Turn user requirements into robust features, collaborating closely with the product owner. Maintain and improve existing desktop applications while … Software Engineer Requirements Strong experience with C#, .NET Experience working with TypeScript & React. Proficiency as a full stack Software Engineer, including front-end web development (CSS, HTML) and backend API design. Knowledge of SQL and database design. Familiarity with Git and agile methodologies. Desirable Skills Experience developing desktop applications (WPF, WinForms). Understanding of unit testing frameworks and continuous More ❯