26 to 50 of 163 GraphQL Jobs in London

Senior Python Developer

Hiring Organisation
Tech 4
Location
City of London, London, United Kingdom
Employment Type
Permanent
using modern tooling to improve reliability and evolve architecture pragmatically. Strong system design fundamentals across scalability, performance, and distributed systems, including API design (REST, GraphQL). Hands-on experience with observability tooling (Datadog, Grafana, or similar) and a data-informed approach to system health and reliability. Solid SQL and data ...

Backend Developer - AWS/Typescript/Serverless Architecture/AWS Lambda

Location
Greater London, England, United Kingdom
with Infrastructure as Code , particularly AWS CDK, CloudFormation or Terraform. Experience with Node.js and the wider TypeScript ecosystem. Experience designing and developing RESTful or GraphQL APIs. Experience with relational and/or NoSQL databases. Experience with CI/CD pipelines and automated deployment processes. Experience with containerisation and Docker. Experience ...

Backend Engineering and Architecture Lead

Location
Greater London, England, United Kingdom
Experience working with technologies such as Django, Flask, PostgreSQL, DynamoDB, Redis, Docker, Kubernetes and Terraform. Experience with event-driven architecture, REST and GraphQL APIs, messaging services and cloud-native infrastructure. A background in observability, automated testing and incident management, using tools such as PyTest, CloudWatch, New Relic or Sentry. Experience ...

Forward Deployed Solution Engineer – Applied AI FDE

Location
Greater London, England, United Kingdom
design and implement AI-native software in production environments Engineering depth: Strength in backend (Python, Node.js, Java), frontend (React, Angular), APIs (REST/GraphQL) LLM tooling: Familiarity with LangChain, Semantic Kernel, prompt chaining, vector search, and context management Performance & observability: Skilled in debugging distributed systems, tuning for latency, and implementing ...

Senior Software Engineer I (Growth)

Location
Greater London, England, United Kingdom
optimisation teams. Experience with analytics and experimentation tooling to support A/B tests. Our Tech Stack Frontend: React Native (iOS and Android) Typescript GraphQL (Apollo Client) Fastlane SwiftUI (Apple Watch) Maestro E2E tests Backend: Serverless (AWS) Lambdas (NodeJS & Python) AWS AppSync DynamoDB, S3, SQS, SNS, EventBridge, SageMaker Snowflake ...

Backend Developer

Location
Greater London, England, United Kingdom
application logic using modern backend languages (Node.js/Python/Go or equivalent modern stacks). Build out high-performance, well-documented RESTful and GraphQL API pipelines to serve responsive mobile and desktop client interfaces. Database & Data Infrastructure: Architect, index, and optimize relational and non-relational database layers (e.g., PostgreSQL ...

Senior Product Engineer

Location
Greater London, England, United Kingdom
Experience building LLM-powered product features: retrieval, tool use, agent workflows, evaluation and observability of model output. Familiarity with Ruby/Rails, React, Federated GraphQL, Kafka, Kubernetes, Docker, microservices, and NetSuite. Experience in logistics, supply chain, marketplace, or other operations-heavy products. Design sensibility: comfortable making reasonable UI decisions without ...

Staff Software Engineer, Liquidity Management (C#/.NET) New London, UK

Location
Greater London, England, United Kingdom
Server ideally), including query optimization, indexing strategies, and data modeling Experience building and maintaining RESTful APIs and understanding when to use alternative patterns (GraphQL, gRPC, webhooks) WHO WE ARE: Do Your Best Work The opportunity to build in a fast-paced start-up environment with experienced industry leaders A learning ...

Senior AWS Cloud Engineer - Remote & DevOps Expert

Location
Greater London, England, United Kingdom
native apps on AWS, managing multi-tenant EKS clusters and IaC workflows. You will build web apps with React/TypeScript, implement REST and GraphQL APIs, and contribute to microservices and event-driven architectures. Ideal candidates have strong DevSecOps experience, automated CI/CD via GitHub Actions, and a track ...

Backend Developer (Python)

Location
Greater London, England, United Kingdom
Azure) Nice to Have Experience with NoSQL databases (MongoDB, Redis) Knowledge of message queues (RabbitMQ, Kafka) Understanding of containerization (Docker, Kubernetes) Experience with GraphQL Knowledge of data processing frameworks Familiarity with machine learning concepts Experience with monitoring and logging tools Understanding of security best practices Technical Skills Python Django Redis ...

Senior Software Engineer (Fullstack, AI and CMS)

Location
Greater London, England, United Kingdom
communicating clearly and helping shape pragmatic technical approaches and the future roadmap. We’d love to talk to you if you: Have experience with GraphQL and REST, and are comfortable working across modern web applications and APIs. Have experience with AWS, S3, CloudFront and Terraform, with a strong understanding ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
understanding what needs to be built, to getting it into the hands of customers, to making sure it stays running. Our stack: AWS, MongoDB, GraphQL, React, TypeScript, Python, Terraform. We have strong DORA metrics, we pair program, we deliver value in small increments and observe change. The tooling and process ...

Senior Software Engineer - London

Location
Greater London, England, United Kingdom
distributed systems on Kubernetes in a public cloud. AWS experience helps most. Have built and shipped systems end to end, including APIs (REST or GraphQL) and integrations with outside services. Know relational and non-relational databases, and message queues such as SQS, RabbitMQ or Kafka. Instrument what you build, with ...

Senior Frontend Developer

Hiring Organisation
Rullion Managed Services
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
React Query SWR Apollo Client UI & Design Systems Tailwind CSS Styled Components Material UI (MUI) Radix UI Framer Motion Custom Design Systems APIs & Data GraphQL REST APIs Contentful CMS React Hook Form Zod Testing Vitest Jest Testing Library Playwright Storybook MSW Axe/Pa11y DevOps & Infrastructure AWS Terraform GitLab ...

Full Stack Software Engineer

Location
City Of London, England, United Kingdom
Analytics Services development API development Web development Mobile development Security Performance optimisations Tech stack Infrastructure - AWS Backend Database - PostgreSQL Backend Application - Django, Python, GraphQL Frontend Web - React, TypeScript Frontend Mobile - React Native, TypeScript 🤸🏽♂️ Benefits & Perks Competitive Salary & Options 25 days holiday Unlimited holistic health days Enhanced parental policies Pension scheme ...

Senior Software Engineer II (Full-Stack)

Location
Greater London, England, United Kingdom
without prior experience in one or more of the above, and we'll get you fully ramped up during onboarding. Frontend: React Native, TypeScript, GraphQL Backend: serverless on AWS, Node.js/Python, DynamoDB, Snowflake Tooling (continuously re-evaluated): Claude Code, Cursor, Linear with agents, Github with GHA Nice to have ...

Agentforce Operations FDE

Location
Greater London, England, United Kingdom
vector databases, search indexes, and knowledge bases to supply agents with accurate enterprise context. Enterprise Integration & API Management: Develop and maintain custom APIs (REST, GraphQL, webhooks) and integration pipelines connecting AFO/Agentforce to Salesforce Data Cloud (Data 360), cloud warehouses (Snowflake, Databricks), and core ERPs (SAP, Oracle, NetSuite ...

Lead Software Engineer - Frontend Engineering - React Native

Location
Greater London, England, United Kingdom
React framework Building applications usingReact Nativein TypeScript or JavaScript Native application development across Android/iOS inKotlin/Swift Understanding of REST APIsand GraphQL Comfortable working with projects partially or fully usingTypeScript Using latestReact featuressuch as Suspense and Hooks End to end testing applications withDetox/Appium/WebdriverIO/ ...

AI Engineer, London

Location
Greater London, England, United Kingdom
enterprise AI environments. You have a sharp eye for UI/UX design and have built intuitive, AI-driven interfaces. You have experience with GraphQL, WebSockets, or real-time data streaming. You’ve contributed to open-source projects or have built developer tools for AI. #J-18808-Ljbffr ...

Software Engineer - Product Team

Location
Greater London, England, United Kingdom
understanding what needs to be built, to getting it into the hands of customers, to making sure it stays running. Our stack: AWS, MongoDB, GraphQL, React, TypeScript, Python, Terraform. We have strong DORA metrics, we pair program, we deliver value in small increments and observe change. The tooling and process ...

Software Engineer III- React

Location
Greater London, England, United Kingdom
proficient applied experience Ability to write testable, clean JavaScript code Proficiency in React framework Familiarity with writing unit tests Understanding of REST APIsand GraphQL Ability to work in a dynamic, agile environment within a geographically distributed team Ability to focus on promptly addressing customer needs Excellent written and verbal communication ...

Senior Software Engineer (BackEnd)

Location
Greater London, England, United Kingdom
product and engineering team building the systems that power our ability to revolutionise the electric car leasing industry. Our tech stack is Python with GraphQL, PostgreSQL and NoSQL databases, running on AWS, with a React/Next.js frontend. What you'll do... Work within a dedicated cross-functional team ...

Staff Software Engineer

Location
Greater London, England, United Kingdom
record of leading complex initiatives that cross team lines. Deep expertise in TypeScript/JavaScript and Node.js, including architecting REST and/or GraphQL APIs and distributed systems. Comfort outside your home language and stack. We expect Staff engineers to be T‐shaped. Strong relational database, data modelling ...

Technical Lead (AI & MACH)

Location
City Of London, England, United Kingdom
Advanced Python programming AI frameworks such as AutoGen, Langflow, Tensorflow Knowledge of Infrastructure as Code, CI/CD Use of Middleware and RESTful or GraphQL APIs Microservices and MACH Architectures. HTML, CSS, Javascript frameworks such as React, or Mobile technologies such as SwiftUI, Kotlin, Flutter or React‐native CMS, DXPs ...

Software Engineering Manager

Location
Greater London, England, United Kingdom
backend and full-stack software development, with Node.js/TypeScript and C#/.NET used within Moonpig. Exact stack experience isn’t required. React, GraphQL and .NET Core across our wider web and API environment. AWS and serverless cloud technologies. Terraform for infrastructure as code. GitHub/GitLab ...