Senior JavaScript Engineer

Staffworx Ltd
Hounslow, UK
10 days ago
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Role details

Contract type
Temporary contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Working hours
Regular working hours

Tech stack

JavaScript (Programming Language) Agile Methodology Cloud Engineering Node.Js TypeScript DevOps Tools - Open-source Concourse Kubernetes Playwright Codebase Graphql JestJS
+2 more
Docker Jenkins

Job description

  • Designing & TypeScript/Node.js services and GraphQL APIs for real-world applications.
  • Writing clean, maintainable, well-tested code.
  • Shaping infrastructure with Docker, Helm, Kubernetes, and modern CI/CD pipelines (Jenkins, Concourse).
  • Driving technical direction within Agile teams and mentoring junior engineers.
  • Ensuring systems are secure, observable, and performant at scale.

Requirements

  • Strong production experience with TypeScript and Node.js.
  • Solid understanding of GraphQL (schema design, integration, evolution).
  • Experience with Vitest, Playwright, and DevOps tooling.
  • Knowledge of cloud-native architectures & infrastructure-as-code.
  • Track record of improving codebases and influencing technical direction.

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

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Approaching live pair programming with stranger teammates

Jonathan Tang · Coffee With Developers

2:07 min

Inspecting default bridge architectures and custom Docker networks

Oliver Seitz Oliver Seitz · World Congress 2025

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Working securely with Node.js path application programming interfaces

Sonya Moisset · World Congress 2023

2:14 min

Exploring frontend development choices beyond standard JavaScript frameworks

Stacy Cashmore · World Congress 2022

2:34 min

Docker sandbox architecture and microVM environment integration

Manuel de la Peña Manuel de la Peña · World Congress 2026 Europe

3:55 min

Identifying underlying Node.js runtime vulnerabilities using fuzzing tools

Sonya Moisset · World Congress 2023

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