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Software Engineer - UI

Company: HartleyCo

Location: remote, London

Posted: June 04, 2026

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Position Details

Most frontend roles are just building screens.

This isn’t one of them.

This is a chance to own a real-time, collaborative, AI-native product surface - the part of the system where users actually work, make decisions, and rely on the output.

Think Notion or Google Docs-style interaction design, applied to a high-stakes domain where correctness and usability matter.

Why this role is interesting:

  • You’ll own state-heavy, collaborative UI systems , not just components
  • You’ll work on real-time multi-user editing and syncing problems
  • You’ll integrate AI directly into the product experience , not as a bolt-on
  • You’ll join a small, high-performing team with real product traction
  • You’ll have direct influence over product direction and UX standards

This is one of the highest-priority engineering hires on the team right ...