Founding Product Designer / Frontend Engineer

JR United Kingdom; London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A stealth-stage AI-native start-up in London seeks a Founding Product Designer / Frontend Engineer to lead UX strategy and frontend execution. This role combines UX design and front-end development, focusing on creating intuitive interfaces for a B2B product leveraging advanced AI. You will collaborate closely with engineers and customers, shaping the user experience while having a stake in the product's success.

Qualifications

• Experience designing and building B2B user interfaces.
• Fluency in UX research, prototyping, and frontend development.
• Passion for user feedback and elegant interaction design.

Responsibilities

• Lead the UX strategy and frontend execution.
• Translate user workflows into intuitive interfaces.
• Build and iterate on the frontend in React and TypeScript.

Skills

UX research

Prototyping

Frontend development

B2B user interfaces

Interaction design

Tools

React

TypeScript

Job description

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Founding Product Designer / Frontend Engineer, london

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Client:

Location:

london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

1

Posted:

25.05.2025

Expiry Date:

09.07.2025

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Job Description:

London – Onsite | Equity Included

A stealth-stage, AI-native 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.