Senior Frontend Systems Engineer (TypeScript) | UI Frameworks

techstack Recruitment

Full-time IT & Technology
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Location
london, england, United-Kingdom
Posted
May 27, 2026

Job Description

Senior Frontend Systems Engineer (TypeScript) – UI Frameworks | London

Β£150,000 – Β£200,000 + pension, private healthcare, gym membership, hardware budget

London (Hybrid – 2 days WFH)

Most frontend roles sit on top of frameworks.

This one builds them.

A high-growth software company is engineering a next-generation UI framework and data visualisation platform used in mission-critical environments by global enterprises, financial institutions, and technology companies.

Their products power applications used by millions of users every day.

What you’ll be doing

  • Solving complex problems around data structures, recursion, memory usage, and rendering performance
  • Building features end-to-end β€” from design through to release
  • Contributing to a product used by engineering teams globally

What they’re looking for

  • Background in C++, Java, or C# β€” or...