Software Engineer - UI

HartleyCo

Full-time Other-General
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Location
petrópolis, estado do rio de janeiro, Brazil
Posted
June 04, 2026

Job Description

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 engi...