Founding Product Designer / Frontend Engineer

ZipRecruiter; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A stealth AI start-up seeks a Founding Product Designer / Frontend Engineer in London. Blending UX design and frontend development, this role aims to enhance user experience for complex data interactions. The ideal candidate will craft elegant solutions and have equity in the product's success, working onsite with a collaborative team.

Qualifications

• Experience designing and building B2B user interfaces for data-heavy tools.
• Fluency in UX research, prototyping, and frontend development.
• Strong focus on user feedback and elegant interaction design.

Responsibilities

• Lead UX strategy and frontend execution focused on AI and usability.
• Translate user workflows into intuitive interfaces.
• Iterate on frontend development using React and TypeScript.

Skills

UX research

Prototyping

Frontend development

B2B user interfaces

Tools

React

TypeScript

Job description

Job Description

Founding Product Designer / Frontend Engineer | B2B UX Expert | Stealth AI Start-up

London – Onsite | Equity Included

A stealth-stage, AI- start-up — backed by Creandum (investors in Spotify, Klarna, Neo4j, Depop) — is rethinking how businesses interact with complex data and AI workflows. With early customer adoption, increasing demand, and a fast-growing team, they’re now looking for someone who lives at the intersection of UX design and front-end development to help define the face of the product.

This team is building an LLM-leveraged solution designed for high-value B2B users. It's already in use — and now needs a thoughtful, inventive product and UI/UX expert to make it not just powerful, but deeply usable.

What You’ll Own

• Lead the UX strategy and frontend execution for a product that blends AI complexity with business-critical clarity
• Translate user workflows into intuitive, clean interfaces with real-world utility
• Build and iterate on the frontend in React, TypeScript, and modern web tooling
• Partner with AI engineers, founders, and customers to shape every part of the product’s user experience

You’ll Be a Great Fit If You…

• Have designed and built B2B user interfaces, particularly for technical or data-heavy tools
• Are fluent in UX research, prototyping, and frontend development
• Care deeply about user feedback, elegant interaction design, and system clarity
• Are excited to work onsite in London, collaborating daily with a team solving hard technical problems
• Want to shape a product from first principles — and have real equity in what you’re building

This is a rare role where your design sensibility and technical skill will both be core to the product’s success. You’ll help define how people interact with advanced agentic AI — and make that experience simple, powerful, and beautiful.