Founding Frontend Engineer (Next.js, TS) — Equity

Founding Product Engineer

Salary: £80k – £100k + Equity

Company Description: CultureTest – Early‑stage hiring platform co‑founded by Steven Bartlett

Job Description: As the first dedicated frontend hire, you will own the end‑to‑end user experience for a platform revolutionising how companies evaluate talent. Working closely with the CTO, you will design and ship polished interfaces using Next.js and TypeScript, turning complex behavioural data into actionable insights for high‑growth hiring teams.

Location: London, UK

Why this role is remarkable

• Exceptional ownership as the first frontend hire, defining the UI architecture and engineering standards from the ground up for a live product with active users.
• Co‑founded by Steven Bartlett, offering a unique high‑growth trajectory and the opportunity to build a category‑defining product in the recruitment space.
• High‑autonomy environment with a £2,500 equipment budget, unlimited holiday, and meaningful founding‑team equity in a mission‑driven startup.

What you will do

• Design and ship core product features using Next.js (App Router), TypeScript, and Tailwind CSS to create seamless candidate and recruiter experiences.
• Collaborate directly with the CTO on API contracts, system design, and the broader technical roadmap across the entire SaaS platform.
• Translate early‑stage product ideas into fast, polished production code while maintaining a high bar for UX quality and system performance.

The ideal candidate

• Deep technical expertise in React, Next.js, and TypeScript with a proven track record of shipping real‑world SaaS products in fast‑paced environments.
• Strong product instincts and systems thinking ability, capable of defining technical solutions without heavy process or over‑engineering.
• Previous experience in a startup or early‑stage team, demonstrating the ability to thrive in ambiguity and take full ownership of the frontend stack.

Required skills

• Frontend Development
• System Design
• TypeScript
• React
• SaaS

Required languages: English

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