Senior GraphQL Engineer (GraphQL Federation) 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 is an ideal contract for a GraphQL specialist who loves clean schemas, resilient services, and production-grade delivery. The Role (Key Responsibilities) Own end-to-end GraphQL API delivery : schema design through to production integration, focusing on performance, maintainability, security, and scalability .

GraphQL Federation expertise : 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).

Required Experience (Skills & Tech) 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: Prometheus, Grafana, OpenTelemetry, Datadog, 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 / coaching engineers is a plus. xehkeey

Location: West London (Hybrid 2 days/week on-site) Contract: 6 months initial (extensions highly likely)

A variety of soft skills and experience may be required for the following role Please ensure you check the overview below carefully. Start: ASAP Eligibility: UK-based candidates only Rate: Market rates (Outside IR35) Please send your latest CV , confirming: Availability / start date

Outside IR35 day rate

Staffworx Limited are a UK-based recruitment consultancy supporting the global digital, e-commerce, software, and business consulting sectors.