Frontend Engineer | Multiple openings at startups where the UI is the product, not an afterthought

Role overview

Frontend Engineer (multiple openings) focused on building UIs where the interface is a first-class engineering problem.

What you’ll be working with

• React / Next.js
• TypeScript
• Tailwind CSS
• Zustand

Opportunities / partner roles (examples)

• Senior Frontend Developer (San Francisco, on-site): $180k–$240k + equity — UI ownership for developer tools built with AI-native products.
• Full-Stack Engineer with frontend ownership (London): £100k–£175k + equity — own the UX of real-time AI systems used in enterprise workflows.
• Full Stack Engineer (Warsaw, Seed): $75k–$150k + equity.
• Product Engineer (Warsaw/Remote): PLN 180k–300k + equity.

Responsibilities

• Design and build component systems you create, not ones you merely inherit.
• Deliver UI/UX that users actively notice as “better and great.”
• Treat frontend work as serious engineering, especially for real-time and AI-native experiences (for relevant roles).

Requirements

• Strong frontend engineering background (matched by language skills and experience to live roles).
• Proven ability to build high-quality UI using modern frontend technologies (React/Next.js, TypeScript, Tailwind).

Nice-to-haves

• Experience building UX for real-time applications and/or AI-native products.
• Experience as a frontend owner (owning UX end-to-end).