Lead Full-Stack Engineer

1 month, 1 week ago
Full-time
Senior
Software Development
Complexio

Complexio

Complexio connects your data, people, and systems into one intelligence layer. Ask questions in natural language, get answers from real operational data.

Description

  • Own the full frontend for Stevie, including conversational AI interfaces, content feeds, document generation, and collaborative features.
  • Shape the product experience that determines whether enterprise customers trust the system, get value quickly, and return.
  • Design and implement frontend solutions for enterprise AI interactions such as citations from knowledge graphs, streaming responses, and confidence indicators.
  • Influence product direction and architectural decisions for the frontend as the product evolves.
  • Collaborate with backend engineers on data contracts and API integration for real-time and production-facing experiences.
  • Turn ambiguous product problems into concrete, shippable frontend solutions.
  • Prototype, ship, and iterate on user-facing features based on customer feedback.
  • Push back on unclear UX and help define polished, product-driven interfaces.
  • Work in a fast-moving environment where engineering decisions are made by engineers with direct ownership.

Requirements

  • 5+ years of frontend experience in production.
  • Deep understanding of rendering models, performance characteristics, and frontend architectural patterns.
  • Strong product sense and the ability to challenge UX decisions when needed.
  • Experience shipping real user-facing products.
  • Experience with real-time or streaming UI patterns such as WebSockets, SSE, or similar live data approaches.
  • Comfort working through ambiguity and turning vague problems into concrete frontend solutions.
  • Ability to ship end-to-end from prototype to production and iterate based on feedback.
  • Experience in Enterprise/B2B SaaS and understanding of trust-sensitive business users.
  • AI product experience, including latency UX, citation rendering, and hallucination presentation.
  • Strong design sensibility for building polished interfaces without a designer present.
  • Backend literacy and ability to read REST APIs and collaborate on data contracts.
  • Startup experience working in small, fast-moving teams with multiple responsibilities.
  • Comfort using AI tools and AI-assisted development workflows.

Interested in this position?

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