Software Developer in Test (Typescript)

  • La Fosse Associates
  • Mar 30, 2026
Full time I.T. & Communications

Job Description

SDET - Contract - £650 Inside IR35 - 3 days per week London - Typescript/JavaScript experience

This role requires 3 days per week onsite in Central London - Please note you must have previously worked within a financial services role.

La Fosse have partnered with an established London based asset management client who are looking to bring in an experienced SDET to support a high-performing engineering team.

This is a hands on contract role focused on building and enhancing automated test frameworks, improving test coverage, and embedding quality best practices across a fast paced delivery environment.

You will be working in a fast paced agile software engineering team and must have strong knowledge of agile processes and software development practices.

Key Requirements:
  • Strong experience working within an SDET role
  • Experience with TypeScript/Javascript
  • Test automation experience using Playwright
  • Strong understanding of CI/CD pipelines
  • Previous experience within financial services (asset management or trading experience highly desirable)
  • Must have thorough/demonstrable understanding of agile software engineering practices (i.e 3 amigos)
Desirable not essential experience:
  • C# experience
Contract Details:
  • £650 per day (Inside IR35)
  • 3 days per week onsite in London