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Founding Marketer (£50k-£70k + Equity) at S3 Sensitivity Science

Roles & Responsibilities

  • 4-6 years of D2C performance marketing experience, ideally in consumer health, wellness, or ecommerce, on lean, high-impact budgets
  • Deep technical proficiency with Shopify, GA4, and multi-channel ad platforms; hands-on with creative production
  • Proven ability to operate in ambiguous, fast-paced environments with a founder’s mindset and willingness to challenge the status quo
  • End-to-end growth leadership experience, owning growth engine from zero including channels, creative strategy, and Shopify operations

Requirements:

  • Execute end-to-end growth strategy across Meta, Google, and TikTok, managing budgets and scaling performance marketing channels from scratch
  • Lead the creative flywheel by producing, testing, and iterating on high-converting assets and messaging to rapidly fuel the customer acquisition funnel
  • Manage the technical ecosystem, including Shopify store management, GA4 tracking setup, and building high-performance landing pages for rapid message testing
  • Own the marketing function from day one, with autonomy to build the team, tech stack, and growth strategy for the 2026 launch

Job description

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
She will pick the best candidates from Jack's network

The next step is to speak to Jack.

Job Title: Founding Marketer

Salary: £50k-£70k + Equity

Company Description: S3 Sensitivity Science - High-growth consumer health startup

Job Description:
Join the founding team of a well-backed oral care startup taking on the £41bn tooth sensitivity market. As our first marketing hire, you will build the growth engine from zero, owning performance channels, creative strategy, and Shopify operations. You will work directly with proven founders who previously built Skin + Me to £40m+ revenue.

Location: London, UK

Why this role is remarkable:

  • Partner with an elite founding team including the creator of Skin + Me and former senior leaders from Sensodyne to disrupt a stagnant global market.

  • Own the entire marketing function from day one, with the autonomy to build the team, tech stack, and growth strategy for a 2026 launch.

  • Leverage patented technology that scientifically outperforms the current market incumbent, supported by a high-conviction, well-funded pre-launch environment in Camden.

What you will do:

  • Execute the end-to-end growth strategy across Meta, Google, and TikTok, managing budgets and scaling performance marketing channels from scratch.

  • Lead the creative flywheel by producing, testing, and iterating on high-converting assets and messaging to rapidly fuel the customer acquisition funnel.

  • Manage the technical ecosystem, including Shopify store management, GA4 tracking setup, and the building of high-performance landing pages for rapid message testing.

The ideal candidate:

  • 4-6 years of D2C performance marketing experience, ideally within the consumer health, wellness, or e-commerce sectors on lean, high-impact budgets.

  • Deep technical proficiency with Shopify, GA4, and multi-channel ad platforms, with a hands-on approach to creative production rather than just agency management.

  • A relentless founder’s mindset with a proven ability to operate in ambiguous, fast-paced environments where you are comfortable challenging the status quo.

Who are Jack & Jill?
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.
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.

Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

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