Senior GraphQL Engineer (Federation)

Salary: £43,000 - 72,000 per year

Requirements

• Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution)
• Advanced TypeScript and Node.js backend development
• Testing experience with modern frameworks such as Vitest and Playwright (API end-to-end)
• Hands-on delivery with Kubernetes, Helm, Docker, and YAML (cloud-native deployments)
• Observability/telemetry experience with Prometheus, Grafana, OpenTelemetry, Datadog, and APM tools
• Good understanding of CI/CD, infrastructure-as-code concepts, and production support best practices
• Ability to improve existing codebases and influence architectural direction
• Experience mentoring or coaching engineers is a plus

Responsibilities

• Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability
• 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 and varied data sources
• Apply DevOps best practices: CI/CD pipelines (Jenkins, Concourse), Docker, Helm, Kubernetes, and YAML-based deployments
• Work in an Agile engineering environment: collaborate closely, review PRs, influence architecture, and continuously improve delivery
• Ensure APIs are observable and reliable in production using modern telemetry and APM tooling
• Champion GraphQL best practices and share knowledge across teams (mentoring/coaching desirable)

Technologies

• API
• Backend
• CI/CD
• Cloud
• Datadog
• DevOps
• Docker
• Grafana
• GraphQL
• Helm
• Support
• Jenkins
• Kubernetes
• OpenTelemetry
• Playwright
• Prometheus
• Security
• TypeScript
• NodeJS
• JavaScript

More

We are seeking a Senior GraphQL Engineer 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 position is perfect for a GraphQL specialist who values clean schemas, resilient services, and production-grade delivery. Our team operates in a hybrid model based in West London, working 2 days a week on-site. This contract is initially for 6 months with a high likelihood of extension. We offer market rates and are looking for UK-based candidates to start as soon as possible.

last updated 13 week of 2026