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Founding Frontend Engineer — AI‑Native UX Leader

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Understanding Recruitment
Full Time position
Listed on 2026-09-02
Job specializations:
  • Software Development
    Front End Developer, React.js, Full Stack Developer, AI Engineer (Applied/Software)
Salary/Wage Range or Industry Benchmark: 70000 - 110000 GBP Yearly GBP 70000.00 110000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Do you have experience building and shipping exceptional UX at an early-stage startup or customer-facing product?

Are you excited by real ownership, product influence, and shaping the frontend experience of a genuinely category-defining AI product?

🧠 Experience: 5-10 years (startup or customer-facing product background are a bonus)

I’m excited to be continuing our partnership with a pre-seed AI startup building agentic AI systems that radically improve how knowledge workers think, decide, and get work done. This is not another chatbot. This is an AI-native product being built from first principles by engineers from elite technical environments (e.g. Palantir, Citadel).

As the company evolves into a more product-led, consumer-style experience, they’re now looking to hire their first dedicated Frontend Engineer, someone who can own and shape the entire user experience from the ground up.

This is a true founding-level opportunity as the 3rd engineering hire.

💡 You’ll work directly on:

  • Building high-performance, real-time AI-native interfaces
  • Crafting intuitive UX for complex autonomous workflows
  • Developing beautiful, responsive frontend systems in Type Script & React
  • Creating product experiences users genuinely love using
  • Influencing product direction, interaction design, and frontend architecture

✅ They’re particularly interested in engineers who have:

  • Worked on developer tools, web-based IDEs, or highly interactive products (e.g. Gitpod, Git Hub, Cursor-style environments)
  • Built customer-facing or prosumer applications
  • Strong product intuition and a sharp eye for UX/UI
  • Experience operating in fast-moving startup environments
  • A desire to own frontend strategy, not just implement tickets
  • Type Script
  • React
  • AI-native workflows & tooling throughout engineering
  • Some backend experience for optionality
  • Experience with PLG or consumer-style products
  • Design sensibility and ability to bridge engineering + product experience

🔎 What they’re looking for:

  • Strong commercial & product mindset – you care deeply about user experience and outcomes
  • Comfortable in ambiguity and zero-to-one environments
  • Proven ability to ship quickly and iterate with users
  • High ownership mentality and startup pace
  • AI-native way of working (LLMs are tools, not toys)
  • Real founding-level ownership and influence
  • Small, elite team that ships fast
  • Well-funded with long runway
  • Opportunity to define the frontend experience of a next-generation AI product
  • Not another boring B2B SaaS platform… this is something people will genuinely want to use

If you’re excited by the idea of building beautiful, intelligent product experiences at the frontier of AI, this is the one. Interested? Apply now 🚀

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