Senior JavaScript Engineer

Company: Immediate
Apply for the Senior JavaScript Engineer
Location: London
Job Description:

Senior Javascript Engineer (up to £76,000 per annum)

About the role

You’ll be working on Fabric, our digital publishing platform, to design and build scalable APIs and AI‑powered text, audio and video content services that integrate internal systems with third‑party platforms.

Reporting to the Lead UI Developer, the Senior JavaScript Engineer will be expected to develop, maintain, and support our digital products in accordance with the business and technology objectives.

Responsibilities

  • Immerse yourself in our technical ecosystem
  • Develop and test new features, and support existing ones
  • Build reusable code, packages and libraries for future use
  • Optimise code for maximum speed and scalability against an agreed performance budget
  • Use testing frameworks to ensure automated test coverage for platform functionality
  • Collaborate with other team members, Delivery Manager and Product Owner to help plan new functionality or major enhancements
  • Write and improve technical documentation when necessary

Required skills

JavaScript

Required languages: English

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Posted: May 26th, 2026