Design/Frontend Engineer (AI Assistant for Web Testing)

About the role:

• Refactor backend-frontend communication and state management. The current architecture was vibecoded – you'll make it ready for feature scaling.
• Establish a clean design system from existing components.
• Ship token-by-token LLM response streaming to improve perceived performance.
• Design user onboarding from scratch.
• Build a user-friendly error system with clear resolution paths.

Why you should join us:

• Real ownership. You're not implementing someone else's Figma file. You decide how the product looks and feels.
• A small team that ships fast and skips bureaucracy. We benefit from direct feedback from users and quick iteration cycles.
• The backing of JetBrains. We are financially secure, with no reliance on external VC funding.

Who we're looking for:

• A design/frontend engineer who can take a vague problem and turn it into a clear, usable, production-ready feature.

Required experience:

• Strong working knowledge of React and frontend architecture – enough to keep the codebase clean while actively using AI coding tools.
• Experience designing and implementing frontend systems end to end, not just isolated components.
• A portfolio or examples showing full ownership: projects where you designed and built the frontend yourself.
• At least one full year of experience in a startup or fast-moving team.
• Active experience with AI coding tools (Cursor, Claude Code, etc.) with a clear understanding of when they help – and when they hurt.

Nice to have:

• Product design or product management.
• Electron or desktop app development.
• E2E testing – you’ve written tests yourself or worked closely with test automation.
• Early-stage or 0-to-1 projects where UX quality was critical.
• AI-powered products or LLM-based features.