You will join as the first marketing hire to disrupt the global dental sensitivity market. Working directly with founders who have previously scaled D2C brands to £70M+ ARR, you will build the growth engine from scratch. You will own the entire customer journey, from paid acquisition to retention strategy.
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Founding Marketer - Head of Growth at S3 Sensitivity Science
Join a proprietary dental-tech startup as the founding marketer and build the growth engine for a brand set to disrupt the global sensitivity market. Co-founded by the entrepreneur behind Skin + Me (£70M+ ARR), this role offers a rare chance to work directly with a proven team at the earliest stage. If you are an AI-native, D2C-obsessed hustler with experience at top UK challenger brands, this is your opportunity to trade corporate structure for founding equity and massive impact. Forget managing budgets—we want a wannabe founder ready to build a market leader from scratch.
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Location
London, United Kingdom
Compensation
£50k-£80k + Equity
Company
S3 Sensitivity Science
Role overview
Breakthrough consumer healthcare brand with a focus on addressing the problem that 1 in 3 people suffer with globally: tooth sensitivity.
We've teamed up with ex senior leaders from Sensodyne to bring to market a proprietary technology that outperforms the incumbent.
From the co-founder of Skin & Me and the founding team behind Life Supplies.
Launching summer 2026.
What you will do
- Design and execute the full-funnel growth strategy across Meta, TikTok, and paid social ahead of the summer 2026 launch.
- Build out the D2C tech stack including Shopify integration, email/SMS flows, and conversion rate optimization (CRO) frameworks.
- Manage the entire unit economics model, taking full ownership of CAC, ROAS, and LTV to ensure sustainable, high-growth scaling.
Who this is a fit for
- 2-5 years of hands-on D2C growth experience, ideally from a high-growth UK challenger brand like Huel, Surreal, or Grind.
- AI-native operator who defaults to using automation and AI tools to move faster and execute high-quality work independently.
- Entrepreneurial "founder wiring" with the ability to build and iterate rapidly without needing a pre-defined brief or large team.
Why this role is remarkable
- Rare opportunity to join a category-disrupting consumer health brand at the founding stage with a proprietary, clinically superior formulation.
- Build alongside a proven founding team with deep experience scaling D2C giants like Skin + Me and Life Supplies.
- Significant founding-level equity in a business targeting a massive global market currently dominated by legacy incumbents like Sensodyne.
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 S3 Sensitivity Science wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.