Senior JavaScript Engineer

{ “@context”: “http://schema.org”, “@type”: “JobPosting”, “title”: “Senior JavaScript Engineer”, “description”: “

Overview

Hiring: Full Stack JS Software Engineer (GraphQL APIs | TypeScript | Cloud-Native)

Expert level in GraphQL

West London HQ | Hybrid (1–2 days on site) | Outside IR35 | 6-month initial contract (extensions likely)

Responsibilities

  • 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.

What you bring

  • 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.

Nice to have

  • YAML/Helm expertise or large-scale SaaS platform experience.

Application

If this sounds like you, send your CV, day rate, and availability to james.kirk@staffworx.co.uk

Start

ASAP

Rate

Market rates

Eligibility

UK-based, able to be on site 1–2 days/week in West London.

Tags

#fullstack #fullstackjobs #graphQL #nodejs #awslambda #serverless #typescriptjobs #staffworx #talentpartner #hiring #contractjobs

Seniority level

  • Mid-Senior level

Employment type

  • Contract

Job function

  • Engineering, Information Technology, and Analyst

Industries

  • IT Services and IT Consulting, IT System Custom Software Development, and Technology, Information and Media
#J-18808-Ljbffr”, “datePosted”: “2026-05-20”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Staffworx”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__436842353__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=15282” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “Hounslow” } } }
Company: Staffworx
Apply for the Senior JavaScript Engineer
Location: Hounslow
Job Description:

Overview

Hiring: Full Stack JS Software Engineer (GraphQL APIs | TypeScript | Cloud-Native)

Expert level in GraphQL

West London HQ | Hybrid (1–2 days on site) | Outside IR35 | 6-month initial contract (extensions likely)

Responsibilities

  • 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.

What you bring

  • 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.

Nice to have

  • YAML/Helm expertise or large-scale SaaS platform experience.

Application

If this sounds like you, send your CV, day rate, and availability to james.kirk@staffworx.co.uk

Start

ASAP

Rate

Market rates

Eligibility

UK-based, able to be on site 1–2 days/week in West London.

Tags

#fullstack #fullstackjobs #graphQL #nodejs #awslambda #serverless #typescriptjobs #staffworx #talentpartner #hiring #contractjobs

Seniority level

  • Mid-Senior level

Employment type

  • Contract

Job function

  • Engineering, Information Technology, and Analyst

Industries

  • IT Services and IT Consulting, IT System Custom Software Development, and Technology, Information and Media

#J-18808-Ljbffr…

Posted: May 20th, 2026