As the first dedicated frontend hire, you will own the end-to-end user experience for a platform revolutionizing how companies evaluate talent. Working closely with the CTO, you will design and ship polished interfaces using Next.js and TypeScript, turning complex behavioral data into actionable insights for high-growth hiring teams.
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Founding Product Engineer at CultureTest
CultureTest is rethinking how companies hire by replacing gut feel with company-specific, scenario-based behavioral screening. Co-founded by Steven Bartlett, we are looking for our first dedicated Frontend Product Engineer to own the entire user experience. If you are a Next.js expert who wants to move beyond implementing specs to actually defining how a platform is built, this founding role offers meaningful equity and the chance to shape the future of recruitment technology.
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This role is no longer actively hiring, but Jack can still help you discover similar open roles that fit.
Location
London, United Kingdom
Compensation
£80k-£100k + Equity
Company
CultureTest
Role overview
Software
CultureTest helps founders and teams create custom assessments to identify candidates who align with their values, mindset, and culture - before the first interview. It provides individual trait scores for candidates, catches red flags early, and is suited for growing teams hiring regularly. It is an early stage SaaS business that was cofounded by Steven Bartlett in 2025.
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.
Who this is a fit for
- 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.
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.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and CultureTest wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.