25 of 25 GraphQL Jobs in Central London

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 ...

applications Building and maintaining high‐performance APIs and distributed microservices Solving problems around scalability, reliability, security, and automation Working with modern API protocols including GraphQL and gRPC Enhancing the platform that connects both traditional and on‐chain financial services Must‐have experience: Strong backend engineering background with deep coding experience ...

Behavior Driven Development (BDD) and Waterfall) Knowledge of any or all of the following technologies is desired: Kafka, Postgres, Golang, Git, gRPC, Docker, GraphQL Experienced in continuous integration (CI), continuous deployment (CD) and continuous testing (CT), including tools such as Jenkins, Rally and/or JIRA and version control such ...

well-tested, and well-documented code. Must‐Have Technical Skills Expert-level Node.js development experience (TypeScript/Javascript). Professional Golang development experience. Strong GraphQL experience, including schemas, resolvers, and high-volume queries. Deep knowledge of PostgreSQL, including performance tuning and relational design. Hands-on experience with Redis for caching ...

deploy using AWS cloud infrastructure Skills & Experience Required Strong commercial experience with ReactJS Solid understanding of Node.js Experience with Rest API's and GraphQL Familiarity with testing - A/B Testing/Web Testing/Web Performance Proficient with Playwright/Cypress/Jest If the above is of interest ...

architecture, and performance optimization. Key Responsibilities Backend Development Develop and maintain scalable backend services using Go (Golang). Design and implement RESTful APIs and GraphQL endpoints. Build APIs for data ingestion and service-to-service communication. Write clean, maintainable, and efficient production-level code. Implement authentication and security best practices ...

real momentum Technical skills required: Strong TypeScript across both frontend and backend (Node.js) Modern frontend framework experience (React or similar) RESTful and/or GraphQL API design and development Database design and querying (SQL and/or NoSQL) Experience in regulated or data-sensitive industries a strong advantage (healthcare ...

software development lifecycle Write clean, maintainable, and high-quality code following best practices What We Need From You Strong experience with React, React Native, GraphQL, and REST APIs Solid understanding of web and mobile platforms, including performance optimization Knowledge of modern JavaScript (ES6+) and revision control systems Team player with ...

interfaces (20% of your time will be web-focused). Strong knowledge of JavaScript/TypeScript, ECMAScript standards, and modern frontend patterns. Experience with GraphQL and REST integrations. Understanding of web fundamentals (DOM, browser storage, CORS, performance). Comfortable working in cross‐functional teams with strong communication and delivery focus. ...

aligned with best practices Contribute to performance optimisation and secure coding standards Requirements Strong experience with React and/or React Native Experience with GraphQL and RESTful APIs Solid understanding of web fundamentals (DOM, CORS, browser storage, request/response lifecycle) Strong knowledge of mobile platforms, including native modules ...

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 ...

product design and technical decisions What You Need to Bring Strong experience with React, JavaScript (ES6+), HTML, and CSS Familiarity with REST APIs/GraphQL Experience in startup or early-stage product environments Strong problem-solving skills and attention to detail Looking forward to connecting! Caila ...

fast-moving environment. This is a role for someone who is comfortable building without perfect specs and takes initiative naturally. Requirements Strong Node.js and GraphQL (NestJS) experience PostgreSQL, Prisma, and solid data structures/OOP fundamentals Experience building high-concurrency, event-driven systems GCP experience (Terraform desirable) Experience working with ...

Alongside QE Manager, deliver automation strategy within a product area Write high-quality automation code (Python or TypeScript) Work across backend APIs (REST, ideally GraphQL exposure) Line manage 3 - 4 QAs (light-touch mentoring & performance reviews) Partner with Product & Engineering to improve release quality Build tools or frameworks where gaps ...

Android applications. Proficient in Kotlin (and familiar with Java), with a solid grasp of Android fundamentals and app lifecycle. Comfortable working with REST/GraphQL APIs, client/server patterns, and modern Android tooling (e.g., Jetpack, Compose). Intentional about building high‐quality, performant, and accessible Android user experiences. Thoughtful ...

applications. Proficient in Swift, SwiftUI and familiar with common iOS patterns (e.g., MVC, MVVM, MVI) and Apple’s tooling. Comfortable working with REST/GraphQL APIs, client/server architectures, and modern iOS development practices. Intentional about building high‐quality, performant, and accessible iOS user experiences. Thoughtful about using ...

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 ...

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 ...

About the Company At AudienceProject, we're on a mission to bring transparency and certainty to advertising measurement. We empower brands, agencies, and publishers across the globe with tools to measure, target, and optimize their ...

modern JavaScript (ES6+). Proven experience with state‐management libraries (e.g., Redux, Zustand). Solid experience integrating front‐end apps with RESTful APIs, (GraphQL is a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ( Git ), modern build tools … side rendering or static site generation (Next.js). Exposure to AI/ML integrations or advanced analytics in a front‐end context. Familiarity with GraphQL or micro‐frontend architectures or enterprise‐grade front‐end tooling. What We Offer Salary: £70,000 – £75,000 + equity participation. Hybrid working model ...

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 ...

Grade Architecture Standardised patterns from intake → build → QA → deploy → measure Secure-by-default engineering GDPR-safe, compliance-ready systems Workflow Automation at Scale Scalable GraphQL APIs Event-driven systems with strong reliability guarantees Monitoring, logging, error handling & documentation that scales What You’ll Build High-concurrency APIs with retries, idempotency … asset management) Reporting and dashboard surfaces that remain consistent under load Systems designed to scale confidently from 10 → 10,000+ users Tech Stack NodeJS GraphQL (NestJS) PostgreSQL Prisma GCP Terraform AI/LLM integrations (including Gemini) What They’re Looking For Strong fundamentals: data structures, OOP, and complexity analysis Experience ...

based). Preference for candidates based in North London , but flexible across the UK Start: ASAP Are you a technically strong Hasura and GraphQL specialist ready to lead the integration layer of a major HR systems programme? Our client is seeking a Hasura DDN Integration Engineer to design and deliver … centralised integration platform connecting a core HR system with several external services. The project requires expertise in Hasura, GraphQL, and microservices-based architectures, with a focus on building scalable and event-driven integrations across multiple systems. This is a hands-on contract role, ideally suited to a senior integration engineer ...

What you’ll be doing: Design and build scalable, production-grade backend systems Develop high-performance APIs and event-driven architectures Work with GraphQL and modern backend frameworks to power core product features Ensure reliability through monitoring, logging and resilient system design Collaborate closely with product, frontend and design teams … platform scales Support AI and LLM-driven functionality within the product What you’ll need: Strong commercial experience with NodeJS Experience with GraphQL, ideally within a structured backend framework Solid understanding of PostgreSQL and data modelling Strong system design skills and understanding of scalable architecture Experience building secure, enterprise-ready ...