401 to 425 of 1,087 API Design Jobs in England

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Job Description Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

People, Process, and Technology for... Job Title: MuleSoft Architect Contract Location: Plymouth, MA Experience: 12+ years Role Summary: We are looking for an experienced MuleSoft Architect to lead the design and delivery of API integration solutions. This role involves architecting and implementing secure, scalable, and reusable integrations using MuleSoft, aligning with 15-factor principles and enterprise API strategies. Key Responsibilities: Define and own the API integration architecture using MuleSoft Anypoint Platform or similar iPaaS tools. Lead design and implementation of integrations with third-party APIs (REST/SOAP), regardless of backend technology (.NET, Java Spring Boot, Node.js, etc.). Implement token-based authentication, authorization, and enforce API gateway policies. Establish best practices for … API lifecycle management using Swagger/OpenAPI specifications. Design and manage sandbox environments with mock/test data for parallel system testing. Solve integration edge cases and performance bottlenecks proactively. Implement and promote 15-factor app principles for highly scalable APIs and integrations. Work closely with security teams to ensure APIs are compliant with OWASP and API More ❯

value of technology and build a more sustainable, more inclusive world. Your Role We are seeking passionate and experienced Senior Kotlin Developer with strong backgrounds in Spring Boot and API design. The ideal candidates are forward-thinking individuals with a senior developer's mindset, capable of driving complex features end-to-end and collaborating with cross-functional teams to … deliver impactful solutions Key Responsibilities Drive the design and implementation of complex features from inception to deployment. Define technical solutions aligned with business objectives and ensure scalability, security, and maintainability. Create robust, efficient, and scalable APIs for frontend integration. Promote best practices in RESTful API design, documentation, and implementation. Work closely with technical and product stakeholders to … clear communication across teams Proactively identify and address technical challenges, driving continuous improvement in the codebase and processes. Stay updated with the latest trends in Kotlin, Spring Boot, and API design. Work closely with Mobile and Web FE team to build Backend for Frontend that enables faster scalable FE development Your Profile Proficiency in Kotlin and Spring Boot with More ❯

providing consulting expertise in solution architecture, software development, integration, and business processes. Key Responsibilities: Architect robust, secure, and scalable solutions across digital banking and financial platforms. Define and implement API strategies, including governance, gateway management, and lifecycle design. Work with stakeholders to translate complex business requirements into end-to-end architecture solutions. Lead solution design workshops and technical … teams and third-party vendors. Ensure solutions meet industry regulatory requirements (e.g., PSD2, Open Banking, GDPR). Document architecture blueprints, integration patterns, and solution roadmaps. Support development teams through design validation, implementation, and deployment. Promote architectural standards, best practices, and continuous improvement. Qualifications: Minimum 10 years of IT experience, with 5+ years in solution architecture roles. Strong background in … banking or financial services, including knowledge of core banking, payments, and digital channels. Expert-level skills in API design (REST, SOAP, OpenAPI) and integration architectures. Experience with API management platforms (e.g., Apigee, MuleSoft, Kong, WSO2). Understanding of cloud services (AWS, Azure, GCP), microservices, and containerization. Familiarity with regulatory frameworks in financial services (PSD2, Open Banking, GDPR More ❯

a project management/agile delivery methodology to ensure timely and high-quality delivery of software applications. Technical Ownership: Take technical ownership of a product or software solution, covering design, estimation, shaping, and user story/requirement creation. Solution Documentation: Document solutions, including architecture, configuration, release, and support handover. Stakeholder Collaboration: Collaborate and liaise with other stakeholders/end … Deep understanding of coding best practices and modern architectural patterns, including microservices and message-driven architectures. Non-Functional Requirements: Experience developing applications with non-functional requirements in mind. Application Design: Experience in application/digital services design. Software Engineering Practices: Proficiency in software engineering practices like code reviews, CI/CD pipelines, and SOLID/DRY principles. Technical Skills … experience with the following technologies: Frontend: JavaScript/TypeScript, Angular, React, Node. Backend: Java, Spring Boot, Hibernate. Desirable Kotlin. Estimation and Sizing: Experience in estimation and sizing. Integration and API Design: Experience in integration and API design. Cloud Experience: Proficiency in cloud technologies. Emerging Technologies: Appetite to work with emerging AI technologies. Security Clearance: SC Eligible. This More ❯

the estate. You’ll be working closely with infrastructure, architecture, and infosec teams to support high-availability production systems. The role also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# … Comfortable working with legacy systems and large enterprise environments Confident leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices Greenfield REST API design including HATEOAS implementation Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join More ❯

the estate. You’ll be working closely with infrastructure, architecture, and infosec teams to support high-availability production systems. The role also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# … Comfortable working with legacy systems and large enterprise environments Confident leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices Greenfield REST API design including HATEOAS implementation Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join More ❯

effective systems in record time. Leverage tooling and automated testing to deliver quality software at speed. Contribute to the core architecture of our systems, improving database performance, data integrity, API design, and distributed system reliability. Your experience with software resilience will help us build systems that gracefully handle unexpected scenarios. Must-have Strong 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 ( Node.js preferred). Understanding of distributed systems concepts - if you've built reliable microservices or dealt with API synchronization, you already have relevant experience. Experience working with databases (PostgreSQL and Prisma or similar ORM experience … creating intuitive interfaces to manage it. Ability to work effectively in cross-functional teams. Strong communication skills and customer empathy. At least one of these areas Product thinking and design mentality : Experience working closely with users, translating complex requirements into simple interfaces, and making scope decisions based on customer value. Deep distributed systems expertise : You bring a deep experience More ❯

detail and a focus on low-latency rendering. This role requires a deep understanding of modern React architecture, structured coding principles, and UI/UX best practices. Key Responsibilities Design and implement complex, real-time dashboards and interactive UIs for mission-critical financial applications Optimize front-end performance to achieve microsecond-level responsiveness in data visualization components Develop reusable … optimization techniques (virtualization, memoization, code splitting) Experience with state management solutions (Redux, MobX, Recoil, or similar) Proficiency with WebSockets or other real-time data protocols Strong knowledge of responsive design and cross-browser compatibility Experience with testing frameworks (Jest, React Testing Library, Cypress) Excellent understanding of clean code principles and component architecture Strong system design skills with experience … of financial domain concepts (for trading/banking applications) Experience with data visualization libraries (D3.js, HighCharts, etc.) Familiarity with micro-frontend architecture Experience with GraphQL and/or REST API design CI/CD pipeline experience and deployment automation Experience with performance monitoring tools Education Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent More ❯

APIs, and multi-language client libraries. Key Responsibilities: Build cloud-based, distributed data solutions. Understand and prioritize investment data needs. Collaborate with users and team members to refine requirements. Design high-performance data ingestion and delivery systems. Technical Skills: 7+ years with Python, Rust is a bonus Strong expertise in distributed systems Experience with event streaming platforms like Kafka … . Familiarity with DevOps , CI/CD , and infrastructure-as-code . API design experience; front-end experience with React is a plus. Cloud experience (especially AWS ) is highly valued. Additional Requirements: Experience working within the data space within a Hedge Fund Environment Happy to work onsite 4 days a week in central London Educated to Degree Level More ❯

APIs, and multi-language client libraries. Key Responsibilities: Build cloud-based, distributed data solutions. Understand and prioritize investment data needs. Collaborate with users and team members to refine requirements. Design high-performance data ingestion and delivery systems. Technical Skills: 7+ years with Python, Rust is a bonus Strong expertise in distributed systems Experience with event streaming platforms like Kafka … . Familiarity with DevOps , CI/CD , and infrastructure-as-code . API design experience; front-end experience with React is a plus. Cloud experience (especially AWS ) is highly valued. Additional Requirements: Experience working within the data space within a Hedge Fund Environment Happy to work onsite 4 days a week in central London Educated to Degree Level More ❯

Tech Leadership Recruiter - Founder at BlackCode Software Developer - Java/Python, Reading, Hybrid, Perm. Newly created Software Developer opportunity due to growth; you will collaborate with project partners to design and implement SaaS solutions for a large, high profile, European programme. This role is crucial in advancing standards and protocols for long-term digital strategy and contributing to the … adopters to validate and refine models and tools. Essential Skills and Experience Proficiency in programming in Java (and/or Python). Experience with developing cloud hosted software solutions. Design, development and use of REST APIs. Familiarity with containerization such as Docker and k8s. Experience of tools and techniques for data and metadata transformation, mapping, packaging and exchange, especially … make contact for full details and immediate consideration. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Information Technology, Analyst, and Design Industries IT System Custom Software Development, Software Development, and Technology, Information and Media Referrals increase your chances of interviewing at BlackCode by 2x Sign in to set job alerts More ❯

APIs, and multi-language client libraries. Key Responsibilities: Build cloud-based, distributed data solutions. Understand and prioritize investment data needs. Collaborate with users and team members to refine requirements. Design high-performance data ingestion and delivery systems. Technical Skills: 7+ years with Python, Rust is a bonus Strong expertise in distributed systems Experience with event streaming platforms like Kafka … . Familiarity with DevOps , CI/CD , and infrastructure-as-code . API design experience; front-end experience with React is a plus. Cloud experience (especially AWS ) is highly valued. Additional Requirements: Experience working within the data space within a Hedge Fund Environment Happy to work onsite 4 days a week in central London Educated to Degree Level More ❯

About Us At Chamber, we’re redefining virtual spaces. Blending cutting-edge immersive tech with human-centered design, we craft vibrant and intuitive environments where people collaborate, create, and engage effortlessly. The Opportunity We're seeking a Senior Fullstack Engineer with strong web engineering expertise to help build our platform with rock-solid, production-grade code that meets world … strong backend fundamentals. In this role, you'll collaborate with cross-functional teams to implement robust, maintainable features that scale with our growing user base. What You'll Do Design and implement high-quality, well-tested frontend and backend systems with a focus on web performance and accessibility Build scalable, responsive interfaces that deliver exceptional user experiences across devices … Collaborate with design and product teams to refine requirements and translate designs into precise implementations Maintain and improve our frontend architecture, ensuring clean separation of concerns and adherence to best practices Write clean, maintainable code with comprehensive test coverage and documentation Participate in code reviews to ensure quality, share knowledge, and maintain consistency Contribute to architectural decisions, technical standards More ❯

APIs, and multi-language client libraries. Key Responsibilities: Build cloud-based, distributed data solutions. Understand and prioritize investment data needs. Collaborate with users and team members to refine requirements. Design high-performance data ingestion and delivery systems. Technical Skills: 7+ years with Python, Rust is a bonus Strong expertise in distributed systems Experience with event streaming platforms like Kafka … . Familiarity with DevOps , CI/CD , and infrastructure-as-code . API design experience; front-end experience with React is a plus. Cloud experience (especially AWS ) is highly valued. Additional Requirements: Experience working within the data space within a Hedge Fund Environment Happy to work onsite 4 days a week in central London Educated to Degree Level More ❯

APIs, and multi-language client libraries. Key Responsibilities: Build cloud-based, distributed data solutions. Understand and prioritize investment data needs. Collaborate with users and team members to refine requirements. Design high-performance data ingestion and delivery systems. Technical Skills: 7+ years with Python, Rust is a bonus Experience with event streaming platforms like Kafka . Familiarity with DevOps , CI …/CD , and infrastructure-as-code . API design experience; front-end experience with React is a plus. Cloud experience (especially AWS ) is highly valued. Additional Requirements: Experience working within the data space within a Hedge Fund Environment Happy to work onsite 4 days a week in central London Educated to Degree Level, ideally Computer Science or similar. More ❯

FinTech companies. Requirements: At least 5 years of professional Rust software development experience Strong understanding of Rust, memory management, STL containers, and algorithms Good knowledge of OOAD, architecture and design patterns, API design principles Hands-on experience with low-latency, multithreading, including race conditions, deadlocks, etc. Experience with PostgreSQL, particularly in handling large-scale datasets and optimizing … tools such as CMake/Make Experience with containers (Docker, Kubernetes) Responsibilities: Write clear, understandable and highly optimized Rust code according to best practices Develop new features including the design of interfaces and implementation to support reusability, testability, modularity in accordance with the agreed plans and quality standards Enhance existing features and improve the quality of the libraries and … meets client expectations Provide time estimates and time/performance/quality trade-offs to management and other teams Participate in technical discussions to find the right architecture/design solution Contribute to architectural planning and refactoring Defect analysis and fixing Report the status, results and roadblocks Conduct an interviews Collaborate effectively with engineers and other team members, transfer More ❯

FinTech companies. Requirements: At least 5 years of professional Rust software development experience Strong understanding of Rust, memory management, STL containers, and algorithms Good knowledge of OOAD, architecture and design patterns, API design principles Hands-on experience with low-latency, multithreading, including race conditions, deadlocks, etc. Experience with PostgreSQL, particularly in handling large-scale datasets and optimizing … tools such as CMake/Make Experience with containers (Docker, Kubernetes) Responsibilities: Write clear, understandable and highly optimized Rust code according to best practices Develop new features including the design of interfaces and implementation to support reusability, testability, modularity in accordance with the agreed plans and quality standards Enhance existing features and improve the quality of the libraries and … meets client expectations Provide time estimates and time/performance/quality trade-offs to management and other teams Participate in technical discussions to find the right architecture/design solution Contribute to architectural planning and refactoring Defect analysis and fixing Report the status, results and roadblocks Conduct an interviews Collaborate effectively with engineers and other team members, transfer More ❯

FinTech companies. Requirements: At least 5 years of professional Rust software development experience Strong understanding of Rust, memory management, STL containers, and algorithms Good knowledge of OOAD, architecture and design patterns, API design principles Hands-on experience with low-latency, multithreading, including race conditions, deadlocks, etc. Experience with PostgreSQL, particularly in handling large-scale datasets and optimizing … tools such as CMake/Make Experience with containers (Docker, Kubernetes) Responsibilities: Write clear, understandable and highly optimized Rust code according to best practices Develop new features including the design of interfaces and implementation to support reusability, testability, modularity in accordance with the agreed plans and quality standards Enhance existing features and improve the quality of the libraries and … meets client expectations Provide time estimates and time/performance/quality trade-offs to management and other teams Participate in technical discussions to find the right architecture/design solution Contribute to architectural planning and refactoring Defect analysis and fixing Report the status, results and roadblocks Conduct an interviews Collaborate effectively with engineers and other team members, transfer More ❯

FinTech companies. Requirements: At least 5 years of professional Rust software development experience Strong understanding of Rust, memory management, STL containers, and algorithms Good knowledge of OOAD, architecture and design patterns, API design principles Hands-on experience with low-latency, multithreading, including race conditions, deadlocks, etc. Experience with PostgreSQL, particularly in handling large-scale datasets and optimizing … tools such as CMake/Make Experience with containers (Docker, Kubernetes) Responsibilities: Write clear, understandable and highly optimized Rust code according to best practices Develop new features including the design of interfaces and implementation to support reusability, testability, modularity in accordance with the agreed plans and quality standards Enhance existing features and improve the quality of the libraries and … meets client expectations Provide time estimates and time/performance/quality trade-offs to management and other teams Participate in technical discussions to find the right architecture/design solution Contribute to architectural planning and refactoring Defect analysis and fixing Report the status, results and roadblocks Conduct an interviews Collaborate effectively with engineers and other team members, transfer More ❯