Founding Engineer (Frontend)

Company: Understanding Recruitment
Apply for the Founding Engineer (Frontend)
Location: London
Job Description:

Founding Engineer (Frontend) – AI-native Workspace

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?

Salary: Up to £170k + equity

Location: London, onsite

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 such as Palantir and 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 TypeScript & 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 such as Gitpod, GitHub, or 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

Tech stack:

  • TypeScript
  • React
  • AI-native workflows & tooling throughout engineering

Bonus points for:

  • Some backend experience for optionality
  • Experience with PLG or consumer-style products
  • Design sensibility and ability to bridge engineering and product experience

What we’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)

Why join now?

  • 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

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Posted: May 17th, 2026