24 of 24 GraphQL Jobs in London

collaboration Back-end Experience with some of the following, or a strong willingness to learn: Node.js – building scalable, maintainable services APIs – RESTful design (GraphQL a plus), authentication, validation, rate limiting Databases – PostgreSQL/MySQL, schema design, indexing, query optimisation ORMs – Sequelize or similar (migrations, associations, transactions) Business logic – handling payments ...

blockchain with web apps (wallets, APIs, indexing services). Strong understanding of security, scalability, and distributed systems. Technical Competencies TypeScript/JavaScript, REST/GraphQL APIs CI/CD pipelines and DevOps tooling Cloud security, identity, and access management Blockchain tooling (Hardhat, Foundry, Web3.js/Ethers.js or similar) Nice ...

high-quality React Native application. Architect scalable mobile solutions that meet the demands of financial applications (security, performance, reliability). Integrate with RESTful and GraphQL APIs and collaborate closely with backend teams. Optimize app performance, including memory usage, load times, and smooth UI interactions. Implement high-security standards such ...

Senior GraphQL Engineer (GraphQL Federation) to design, build and scale high-performance GraphQL APIs in a modern TypeScript/Node.js stack, deployed to Kubernetes in a cloud-native environment. This is an ideal contract for a GraphQL specialist who loves clean schemas, resilient services, and production-grade delivery.The Role … Responsibilities) Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. GraphQL Federation expertise: design and implement supergraphs, subgraphs, resolvers, and governance patterns (versioning, evolution, backward compatibility). Build and maintain TypeScript + Node.js backend services, integrating with modern frontends ...

evolution of our mobile technology stack. What You'll Do Build and maintain a high-quality React Native application. Integrate with RESTful and GraphQL APIs. Diagnose, debug, and resolve issues across the mobile stack, ensuring a smooth and reliable user experience. Participate in code reviews, offering constructive feedback and helping ...

systems supporting Rates & FX platforms. Key Skills Required: Strong C#/.NET Core expertise Experience with distributed, event-driven, cloud-native architectures REST/GraphQL API development AWS or Azure cloud deployment Relational databases (MSSQL/MySQL) Proven experience leading engineering teams in Agile environments Exposure to trading systems ...

Agile environment Strong expertise in C# and modern .NET/.NET Core Experience building distributed, event-driven systems API design and development (REST, GraphQL) Relational databases (SQL Server, MySQL, or similar) Cloud platforms such as AWS or Azure Solid understanding of the full software development lifecycle Pragmatic, delivery-focused approach ...

authentication flows, with the ability to assess design options and advise teams on integration approaches rather than implementing directly * Familiarity with RESTful and GraphQL API consumption and integration, including security considerations and cloud-native architectures (Azure preferred) * Working knowledge of architecture patterns, performance optimisation strategies, and security best practices * Awareness ...

pipelines and DataDog monitoring. Your responsibilities include improving infrastructure performance and reliability, driving modernization and cost optimization, developing shared components (i.e. auth systems, GraphQL gateways), enhancing developer experience, maintaining E2E testing systems, and creating internal tooling. This is an opportunity to solve challenging scale problems while shaping the technical foundation ...

culture, encouraging peer to peer feedback and evolving healthy, curious and humble teams. Tech Stack: Python, Javascript/Typescript, React/React Native, AWS, GraphQL, Snowflake, Airflow, DDD. This is an incredible opportunity for a Senior Software Engineer to join a unique company as they embark on a period ...

stateless, SPA and others Advanced knowledge of React and React Native Eco system and AWS technology stack. Strong API/integration experience: REST/GraphQL, auth flows, contract design and resilience patterns Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools to enforce ...

broader team to align on priorities You're not alone, but trusted to drive things forward The stack (high level) Backend: Node.js, PostgreSQL, GraphQL, TypeScript Frontend: SolidJS, TypeScript Infrastructure: AWS, Terraform Tools: Cursor, Linear, Notion, GitHub Preferred: TypeScript & Node.js experience But not mandatory: We care more about good engineering judgment ...

Mobile architecture approaches and design patterns including micro front ends, module federation, stateless, SPA and others Strong API/integration experience: REST/GraphQL, auth flows, contract design and resilience patterns Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools to enforce quality ...

understanding of frontend security, MFA implementation, and secure-by-design tooling. Solid understanding of how front-end clients interact with back-end services (REST, GraphQL, auth flows, tokens, caching etc.). Comfortable defining linting, formatting, and project setup from scratch. experience in building modern, clean, and performance-oriented interfaces. Nice ...

supporting the hiring of two senior fullstack engineers (70% ish front end) You'll: Lead development of high-performance Next.js applications Design scalable APIs (GraphQL a plus) Own code across the stack, with a strong focus on frontend (Don't worry if backend is not your biggest strength they work ...

Javascript/Web Components Tailwind (or familiarity with CSS frameworks) HTML (with best practices and accessibility in mind) Webpack/Vite REST/GraphQL APIs Shopify CLI Git Shopify Functions Checkout Extensibility Bonus Experience: Shopify App Development How to Apply: Interested? Great! Send a brief covering letter (email) along with ...

Technical skills Youre an experienced Fullstack developer with exceptional proficiency in PHP-based CMSes, such as Drupal, and Frontend technologies, including React/Next.js, GraphQL and Storybook You are comfortable working with both monolithic and decoupled architectures You are familiar with the component based approach to build and deliver projects ...

performant, accessible, secure, and compliant with relevant standards and regulations. Platform & Integration Lead the integration of front-end platforms with backend services using GraphQL APIs, and third-party systems to deliver seamless end-to-end user experiences. Collaborate with backend, platform, and DevOps teams to ensure well-designed interfaces … using version control effectively, and working within modern development workflows. Solid understanding of secure API integration , authentication and authorisation flows , and modern UI architecture (GraphQL experience preferred). Comfortable leading design implementation and collaborating closely with Product and Design teams, using tools such as Figma to translate concepts into high ...

performance, reliability, and security of backend systems. Key Responsibilities: Develop and maintain backend services using Java, Spring Boot, AWS Build and optimize REST and GraphQL APIs Ensure code quality through testing, refactoring, and best practices Own services end-to-end, including deployment, monitoring, and production support Handle production incidents, perform ...

willing to improve your work with like-minded colleagues. Responsibilities: Design, develop, and execute on our product roadmap. Create products on top of our GraphQL API alongside frontend engineers. Architect well-monitored and well-tested backend services. Find and assess web3 technologies and know when to build using ...

cross-functional stakeholders Respond to incidents Requirements 3 years of experience as an engineer Strong technical background building API Technical background in Python, GraphQL and MongoDB Comfort moving across techstacks Benefits Medical , Dental and Vision insurance Flexible time off policy New Macbook Pro Equity options If you are interested, please ...

applications are performant, accessible, secure, and compliant with relevant standards and regulations. Platform & Integration Lead the integration of mobile platforms with backend services using GraphQL APIs, and third-party systems to deliver seamless end-to-end user experiences. Collaborate with backend, platform, and DevOps teams to ensure well-designed interfaces … React Native is essential , with a strong grasp of front-end design patterns and best practices in mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands-on software ...

areas: Enterprise-grade architecture Standardised patterns from intake → build → QA → deploy → measure. Secure by default, GDPR-safe, compliance-ready. Full-stack workflow automation Scalable GraphQL APIs, integrations, event-driven systems, monitoring/logging, error handling, and documentation that scales beyond you. What you’ll build (real scope) High-concurrency APIs … sacrificing reliability. You communicate crisply async (short Looms, diagrams, notes). You enjoy building enterprise systems that teams can depend on. Must-haves NodeJS GraphQL (NestJS) PostgresSQL Data structures OOP principles Understanding of complexity principles and correct approaches Experience with AI and LLMs (including but not limited to Gemini) Strong ...

areas: Enterprise-grade architecture Standardised patterns from intake → build → QA → deploy → measure. Secure by default, GDPR-safe, compliance-ready. Full-stack workflow automation Scalable GraphQL APIs, integrations, event-driven systems, monitoring/logging, error handling, and documentation that scales beyond you. What you’ll build (real scope) High-concurrency APIs … bring a strong point of view on how AI should reshape the engineering workflow, raising speed and quality without sacrificing correctness. Must-haves NodeJS, GraphQL (NestJS), PostgresSQL Data structures OOP principles Understanding of complexity principles and correct approaches Experience with AI and LLMs (including but not limited to Gemini) Strong ...