Complex made simple
Lead Full-Stack Engineer
Location
United Kingdom
Posted
93 days ago
Salary
0
Seniority
Senior
Job Description
Lead Full-Stack Engineer
Complexio
• Own the full frontend of Stevie's enterprise AI knowledge assistant. • Create user interfaces that enhance customer trust and value. • Shape the product direction and architectural decisions. • Collaborate with domain owners and engineers in a flat org structure. • Develop conversational AI interfaces, content feeds, document generation, and collaborative features.
Job Requirements
- 5+ years of frontend experience in production. You understand rendering models, performance characteristics, and architectural patterns deeply.
- Strong product sense. You push back when the UX doesn't make sense. You've shipped real user-facing products.
- Real-time/streaming UI experience. WebSockets, SSE, or similar live data patterns.
- Comfort with ambiguity. You take vague problems and turn them into concrete frontend solutions.
- You ship. End-to-end — prototype to production to iteration on feedback.
- Enterprise/B2B SaaS. You know the difference between consumer UX and building for a CFO who needs to trust a number.
- AI product experience. Latency UX, citation rendering, hallucination presentation.
- Design sensibility. Polished interfaces without a designer in the room.
- Backend literacy. You can read a REST API and collaborate with backend engineers on data contracts.
- Startup experience. Small teams, multiple hats, fast without cutting corners.
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