1 to 25 of 55 GraphQL Jobs in London

Principal Software Engineer

Hiring Organisation
Collinson Group
Location
London, UK
Employment Type
Full-time
most critical pillars in our Engineering organisation, our API platform, driving innovation across synchronous and asynchronous services built with REST, GraphQL, Kafka, and cloud-native technologies. You'll work hands-on with modern engineering tools and practices, partnering with talented squads to solve complex distributed systems challenges at scale. From ...

Senior Forward Deployed Engineer

Hiring Organisation
Uniphore
Location
London, UK
Employment Type
Full-time
/Vue) and DevOps experience (Docker, K8s, CI/CD). Expertise in building data pipelines and integrating with enterprise systems (REST, Python, SQL, GraphQL, Webhooks etc). Solid understanding of LLMs, Prompt engineering/tuning, Vector DBs (AstraDB, Pinecone, Weaviate etc), RAG pipelines (LlamaIndex, Haystack) and Agent/Workflow ...

Senior Fullstack Developer

Hiring Organisation
Version 1
Location
London, UK
Employment Type
Full-time
design, build, and support of scalable and secure full-stack web applications using FastAPI. Experience in Unit Testing with Jest Experience with GraphQL with React for efficient data fetching and state management is preferred. Consume and integrate RESTful APIs to efficiently connect frontend applications with backend services. Work with business ...

Senior Software Engineer - UK

Hiring Organisation
DISCO
Location
London, UK
Employment Type
Full-time
service running in production is the direct responsibility of the team behind it.ð Our Stack: AWS, PostgreSQL, Redis, Docker, Kafka, Temporal, Datadog, Terraform, gRPC, GraphQL, Kotlinð You should apply if you:have strong demonstrable experience and passion for backend developmentlike working together in multidisciplinary teams to deliver solutions for customersare ...

Principal Engineer (Gen AI and MACH Architecture)

Hiring Organisation
Akqa
Location
London, UK
Employment Type
Full-time
Microsoft Azure; infrastructure design, security and operational ownership, and the ability to draw parallels across cloud providers. API design: RESTful and GraphQL APIs, contract-first design, versioning, gateway patterns and integration across SaaS, CMS, DXP and MarTech stacks. Distributed systems and event-driven architecture: messaging, async workflows, resilience patterns, idempotency ...

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 ...

Senior Software Engineer - Agentic Workflows

Hiring Organisation
Causaly
Location
London, UK
Employment Type
Full-time
expect experience with all of it, but you should be comfortable learning the parts you have not used. Languages: TypeScript, Node.js, PythonBackend: Apollo GraphQL, Zod, fp-ts, FastAPIFrontend: ReactWorkflow & messaging: Restate, Redis Streams, Cloud TasksData: PostgreSQL, Elasticsearch, Redis, MongoDBGenAI: LangGraph, OpenAIObservability: OpenTelemetry, Langfuse, DatadogCloud & infrastructure: Google Cloud, Azure, Kubernetes, Terraform ...

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 ...

Staff Software Engineer - Agentic Workflows

Hiring Organisation
Causaly
Location
London, UK
Employment Type
Full-time
expect experience with all of it, but you should be comfortable learning the parts you have not used. Languages: TypeScript, Node.js, PythonBackend: Apollo GraphQL, Zod, fp-ts, FastAPIFrontend: ReactWorkflow & messaging: Restate, Redis Streams, Cloud TasksData: PostgreSQL, Elasticsearch, Redis, MongoDBGenAI: LangGraph, OpenAIObservability: OpenTelemetry, Langfuse, DatadogCloud & infrastructure: Google Cloud, Azure, Kubernetes, Terraform ...

Principal Engineer

Hiring Organisation
Formula Recruitment Limited
Location
London, UK
Employment Type
Full-time
into everyday engineering workflows~Key Requirements: A strong track record delivering large-scale distributed systems in cloud environmentsDeep knowledge of API design - REST and GraphQL, and substantial hands-on experience with Kafka in a production environmentSolid cloud platform experience, particularly AWS, and comfort with containerised infrastructureProficiency in TypeScript across ...

Staff Quality Engineer - Mobile

Hiring Organisation
Lendable
Location
London, UK
Employment Type
Full-time
.API and contract testing experience, with a point of view on test data and environment strategy. Our tech stackMobile: TypeScript, React Native, Expo, EAS, GraphQL, Relay, Jest, React Testing Library, Maestro. Backend: Kotlin, PHP 8 (Symfony), AWS, Postgres, RabbitMQ, Docker, Kubernetes. Tooling and observability: GitHub, GitHub Actions, Jira, Confluence, Datadog ...

Software Engineer

Hiring Organisation
LinuxRecruit
Location
London, UK
Employment Type
Full-time
Python, Node, Scala, or Go, and have experience with microservices, APIs, and all stages of web development. Bonus points if you have experience with GraphQL, Neo4j, Event Driven Architecture, React or AngularJS, Serverless Frameworks, or IoT. As a member of the team, you will benefit from a tailored learning ...

Full Stack .net Core Developer - Fintech50- Bath

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Core Developer must have: Good knowledge and technical skills in the .NET Core 2/3Strong C#NET WebAPIDocument oriented databases (MongoDB, DocumentDB or others)GraphQL experience (Frontend/backend)Strong React/TypeScriptSingle Page ApplicationBDD/TDDESTful API design and developmentKnowledge and experience with Git and GithubCloud experience will ...

Software Engineer - Android

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
development Exposure to iOS development using Swift Familiarity with end-to-end testing tools such as Detox, Appium, or similar frameworks Experience working with GraphQL APIs Hands-on exposure to CI/CD pipelines and automated mobile application delivery Experience with design systems and component libraries, implementing consistent user interface ...

Software Engineer III - Android - Chase UK

Hiring Organisation
JP Morgan Chase
Location
London, UK
Employment Type
Full-time
cross-platform mobile developmentExposure to iOS development using SwiftFamiliarity with end-to-end testing tools such as Detox, Appium, or similar frameworksExperience working with GraphQL APIsHands-on exposure to CI/CD pipelines and automated mobile application deliveryExperience with design systems and component libraries, implementing consistent user interface and experience ...

Senior Lead Software Engineer - Mobile Engineering

Hiring Organisation
JP Morgan Chase
Location
London, UK
Employment Type
Full-time
storage. Strong engineering practices: writing clean, testable code; effective code reviews; pragmatic documentation; and continuous improvement. Strong experience with API-driven apps (primarily REST, GraphQL) and collaboration with backend teams on contracts and integration patterns. Track record of raising the bar on quality engineering: test strategy, automation, code review discipline ...

Tech Lead (Python, JavaScript)

Hiring Organisation
RedCat Digital
Location
London, UK
Employment Type
Full-time
APIs, Cloud-based ETL pipelines, customer UIs and end-to-end data processing solutionsStakeholder management skillsTech Stack: JavaScript/TypeScript, React, Node, Python, AWS, GraphQL, BaaS, React Native ...

ITap Group Developer Vacancy - Full Stack Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
vanilla JavaScript) Working knowledge of MongoDB (or a similar NoSQL document database) Comfortable with Linux (daily usage and system administration) Desirable: Exposure to Meteor.js GraphQL (Apollo) MySQL Exposure to NativeScript or React Native Angular (v4+) Nice to havePHP AngularJS (1.x)Ideally we are looking for a bright junior ...

Technical Lead

Hiring Organisation
RedCat Digital
Location
London, UK
Employment Type
Full-time
/architecting, including data engineering and data management. Experience in stakeholder management is also essential. Tech stack: JavaScript/TypeScript, React, Node, Python, AWS, GraphQL, BaaS, React Native, and GCP.Package: They are offering up to 120,000 + Benefits: New MacBook Pro OR HP Laptop upon joining (It's yours ...

Lead Mobile Engineer

Hiring Organisation
Collinson Group
Location
London, UK
Employment Type
Full-time
everyday workflows (e.g. code generation, testing, debugging, performance analysis, or automation).Hands-on experience integrating mobile apps with backend APIs (REST and/or GraphQL) and cloud-based services. Strong focus on testing and quality, with experience using mobile testing frameworks and automated testing approaches. Experience owning mobile CI/ ...

Principal - Cloud Data Architect

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
concepts such as cloud services (e.g., AWS, Azure, GCP), real-time data distribution (e.g., Kafka, Kinesis, DataFlow, Airflow), NoSQL (e.g., MongoDB, DynamoDB, HBase, CosmosDB), GraphQL and modern data warehouse tools including Snowflake and DataBricksAbility to think strategically and relate architectural decisions and recommendations to customer needs. Ability to assess traditional ...

Software Engineer II (Android)

Hiring Organisation
TripAdvisor
Location
London, UK
Employment Type
Full-time
learn, we'll support you on the job and help you grow your skills. Our tech stack includes Kotlin, Coroutines, Jetpack Compose, Cursor and GraphQL in a modular layout that follows the clean-architecture concept with MVVM.Code! Our engineers focus on doing what they enjoy most and do best, writing ...

Forward Deployed Engineer (AI Solutions) - UKI Market

Hiring Organisation
Aircall
Location
London, UK
Employment Type
Full-time
technical consulting, solutions engineering, or integration-focused project management. Client facing experience requiredTechnical skills: Strong command of APIs, webhooks, and data structures (JSON, REST, GraphQL) — able to design and troubleshoot integrations confidently. Even better if you have experience with MCP Servers. Practical understanding of AI workflow configuration, including prompt engineering ...

Product Engineer

Hiring Organisation
LinuxRecruit
Location
London, UK
Employment Type
Full-time
finish, the whole software development lifecycle. TypeScript is the language of choice, with a variety of frameworks in play: Node, React, Nest Next etc. GraphQL for APIs and AWS for the cloud. Hybrid work, for better collaboration with an easily accessible central London office. You would be rewarded with ...

Frontend Developer

Hiring Organisation
LinuxRecruit
Location
London, UK
Employment Type
Full-time
helping with customer launches, and build a complex and constantly evolving UI and deliver performance improvement. You have worked heavily with TypeScript, React and GraphQL but have an attitude that using the right tool for the job is the best way to develop. In addition to the cutting-edge technology ...