At a Glance
- Tasks: Lead the frontend development of an innovative AI knowledge assistant for enterprise clients.
- Company: Join Complexio, a forward-thinking tech company revolutionising maritime operations.
- Benefits: Enjoy remote work, competitive salary, and opportunities for professional growth.
- Other info: Flat organisation with direct communication and ownership over your work.
- Why this job: Shape the future of enterprise AI UX and make a real impact.
- Qualifications: 5+ years frontend experience, strong product sense, and real-time UI expertise.
The predicted salary is between 70000 - 90000 £ per year.
Complexio is building Stevie — an enterprise AI knowledge assistant that gives executives and operators a complete view of their organization through knowledge graphs. Our customers are large maritime shipping companies managing hundreds of vessels, thousands of daily emails, and complex commercial operations.
We're looking for a Senior or Lead Frontend Engineer to own Stevie's frontend. The interface is the product — it determines whether enterprise customers trust the intelligence, get value quickly, and come back. You'll shape all of that.
Why This Role
- Enterprise AI UX is unsolved. You won't copy patterns — you'll create them. Citations from knowledge graphs, streaming AI responses that feel trustworthy, confidence indicators on operational intelligence.
- You own the full frontend. No separate frontend team. You are it — with real influence on product direction and architectural decisions.
- Flat org, real impact. Domain owners have authority. Engineering decisions are made by engineers, not managers. You'll own the full frontend — conversational AI interfaces, content feeds, document generation, collaborative features. The product is evolving fast and you'll shape what gets built and how.
Must-haves
- 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.
Strong signals
- 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.
How We Work
- Direct communication. Honest feedback, hard questions, no hiding behind process.
- Ownership over tasks. You're asked what you shipped and learned, not to fill out status reports.
- Speed with quality. We ship fast because we scope well. Customer feedback cycles are weeks, not quarters.
- AI-augmented workflow. We use AI tools extensively and expect you to be comfortable with AI-assisted development.
Remote Lead Full-Stack Engineer in Rotherham employer: Complexio
At Complexio, we pride ourselves on being an innovative employer that empowers our team members to shape the future of enterprise AI. With a flat organisational structure and a focus on direct communication, you'll have the opportunity to make a real impact on product direction while working in a dynamic and supportive environment. Our commitment to employee growth is evident through our fast-paced development cycles and the use of cutting-edge AI tools, ensuring that you are always at the forefront of technology in a role that is both meaningful and rewarding.
