1 to 25 of 41 GraphQL Jobs in London

Nest.js, Express.js, or FastAPI . Database Mastery – Strong SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) expertise. API Development & Security – Experience in building RESTful & GraphQL APIs , JWT authentication, OAuth, and cryptographic security. Scalability & Optimization Skills – Ability to optimize database queries, caching strategies, and event-driven architectures (Kafka, RabbitMQ) . Cloud & DevOps ...

engineering organisation. Key Responsibilities Design, develop, and maintain high-quality Java applications using Spring Boot. Build and optimise RESTful APIs and contribute to GraphQL service development. Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. Contribute to microservices architecture, event-driven systems ...

Tech environment - Not set in Stone Frontend: React, Next.js, TypeScript (or similar) Backend: Node.js (Express, NestJS) or Python (FastAPI, Django) (or similar) APIs: REST, GraphQL (or similar) Databases: PostgreSQL, MongoDB (or similar) AI/Data: Experience integrating AI/ML features via APIs (e.g. OpenAI, Anthropic or similar) Exposure ...

backend. What You Bring to the Table React Node/TypeScript/JavaScript Cloud: AWS, Azure, or GCP. APIs: API design and integration (REST & GraphQL). AI Tooling: Confident using AI-boosted environments to ensure quality (Claude or similar). The Cherry on Top If you’ve dabbled in Infrastructure ...

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 ...

without prior trading/finance experience. Experience with writing unit and integration tests and maintaining CI/CD pipelines. Preferred Qualifications & Experience Experience with GraphQL or REST API development. Knowledge of asynchronous programming, message queues, or real-time streaming architectures. Familiarity with cloud platforms (AWS, GCP, Azure) and container orchestration ...

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 ...

product and engineering team building the systems that power our ability to revolutionize the electric car leasing industry. Our tech stack is Python with GraphQL, React with , PostgreSQL and noSQL databases, running on AWS. What you'll do... Work within a dedicated cross-functional team on key products ...

week in London 🌍 Perks: Remote working, £1k annual flexible benefit, 30 days "work from abroad" p/a 🛠 Tech Stack: Python, FastAPI, gRPC, GraphQL, AWS (EKS), Microservices The Mission 🎯 This scale-up is transforming the insurance landscape through real-time data and telematics. By leveraging smart technology, they reward safe ...

projects simultaneously. "Even Better" If You Have... Experience with CI/CD with an emphasis on a well-maintained testing pyramid. Experience with Federated GraphQL , Kafka , or other event-driven architectures. Experience with Protobuf and gRPC for defining service interfaces and efficiently serializing structured data. Experience with NoSQL data stores ...

optimisation, SEO principles, and rendering approaches (SSR/SSG) Experience building static sites and working within headless architectures Comfortable working with APIs (REST/GraphQL) and Headless CMS platforms Proficient with TailwindCSS or similar styling approaches Familiar with modern tooling, Git workflows, and component-driven development Exposure to AI-assisted ...

video) What they’re looking for: Strong Staff/Principal level engineering experience Deep expertise across but not limited too: JavaScript, React.js, Node.js, TypeScript, GraphQL, AWS, Docker, CI/CD Experience working in startup/scale-up environments Comfortable operating with ambiguity and pace Able to challenge founders, shape direction ...

maintain cross-platform mobile apps using React Native - Build reusable components and maintain a shared mobile design system - Integrate mobile apps with RESTful and GraphQL backend services - Optimize app performance, reduce bundle size, and improve startup time - Handle platform-specific behaviors across iOS and Android environments - Coordinate app releases, versioning ...

supporting infrastructure: git, microservices, containers, etc. Comfortable working with numbers and data, with or without prior trading/finance experience. Preferred Qualifications & Experience GraphQL/Apollo Client. Experience building Single Page Applications (SPAs). Reactive mobile UI development experience. Experience with Material UI or similar component libraries. Familiarity with WebSockets ...

Query Apollo Client Testing Jest React Native Testing Library strong requirement many test files UI Styled Components 6, Reanimated, Gesture Handler, Lottie, Skia APIs GraphQL with codegen, REST with React Query Thirdparty Sentry, NewRelic, Optimizely, Braze, Auth0, Contentful Agile Work Experience ...

maintain web applications using modern JavaScript frameworks - Develop and maintain server-side logic using Node.js where applicable - Integrate frontend components with REST and GraphQL API layers - Write clean, modular, well-documented JavaScript and ES6+ code - Ensure web performance, accessibility, and cross-browser compatibility - Collaborate with product and design on iterative ...

right questions, and making reasonable bets. Bonus Experience with IoT/telemetry, energy data, or time-series workloads Familiarity with event-driven architectures, GraphQL, Airflow, or Python Personal interest in energy, climate tech, or automation Track record of owning complex systems end-to-end 5+ years of experience This role ...

/11) with a desire to transition • 7+ years working across JVM-based backend development • Strong experience with Spring Boot and building RESTful or GraphQL services • Solid understanding of relational databases such as PostgreSQL or MySQL • Experience working within BDD or TDD environments, alongside CI/CD tooling such ...

Responsibilities: - Design and build high-quality iOS applications using Swift - Implement responsive, accessible UI/UX aligned with Apple HIG standards - Integrate RESTful and GraphQL APIs into mobile features - Write unit and UI tests to maintain app stability and regression coverage - Optimize app performance, startup time, and memory footprint - Collaborate ...

ingestion pipelines Architect PostGIS spatial schemas and queries Lead migration from legacy systems into graph architecture Expose data via high-performance APIs (REST/GraphQL) Apply AI tools to accelerate development while maintaining data quality Requirements Strong Neo4j + Cypher experience (production optimisation) Solid PostGIS/spatial SQL expertise Experience ...

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 ...

ensure smooth knowledge transfer Must-Have Skills Strong Terraform Deep AWS serverless experience Python for production workloads Solid DynamoDB knowledge Nice to Have GraphQL/AppSync Node.js or Python API background Cognito or similar auth experience Contract Details 3 months contract with the view of going permanent thereafter once ...

ensure smooth knowledge transfer Must-Have Skills Strong Terraform Deep AWS serverless experience Python for production workloads Solid DynamoDB knowledge Nice to Have GraphQL/AppSync Node.js or Python API background Cognito or similar auth experience Contract Details 3 months contract with the view of going permanent thereafter once ...

technical and non-technical teams. Experience working in agile environments with cross-functional teams. Bonus points for Experience with API-first content delivery and GraphQL . Knowledge of personalization engines and dynamic content rendering. Background in semantic content modeling and linked data principles . If this sounds like it could ...

backend Integrating Claude AI (Anthropic API) to deliver features such as document summarisation, semantic search, and conversational assistants Designing and building RESTful and GraphQL APIs to support real-time, dynamic user experiences Creating responsive, accessible UI components using modern React patterns (hooks, context, server components) Implementing secure authentication and authorisation … environment Owning CI/CD pipelines and cloud infrastructure across AWS and Vercel Tech Stack Frontend: React, Next.js, TypeScript Backend: Node.js, Express APIs: REST, GraphQL Data: PostgreSQL, Redis Cloud/Infra: AWS (Lambda, S3), Vercel, Docker AI: Claude (Anthropic API) Auth: JWT, OAuth What we’re looking for Strong experience ...