Cofounder - Growth & Marketing (Early Traction Startup)

Zenna; London; On-site; Confidential; Full time

Job summary

An innovative wellness tech company in London is seeking a Chief Marketing/Growth Officer to lead user growth and retention strategies. This role is pivotal for scaling the marketing engine and defining Zenna's growth narrative. Ideal candidates will have a proven track record in consumer app marketing and a startup mindset. Attractive cofounder-level equity and growth opportunities are on offer.

Benefits

Cofounder-level equity

Dedicated budget for growth initiatives

Opportunity to shape marketing and product direction

Qualifications

• Proven track record in consumer app growth/marketing, preferably in wellness/health apps.
• Resourceful and resilient, excels in fast-paced environments.
• Background in startups or fundraising is a plus.

Responsibilities

• Design and run creative growth experiments.
• Translate consumer insights into feedback and growth strategy.
• Craft and scale Zenna’s brand narrative.
• Build and own the marketing strategy for user growth.

Skills

Consumer app growth/marketing

Startup mindset

Resilience

Creativity

Education

Background from strong universities

Job description

Intro

Zenna is a spin-out from a neuroscience research organization with two decades of experience. We are building AI-powered brainwave sound technology designed to support people living with migraines and headaches. Delivered through a simple mobile app and regular headphones, Zenna aim to make migraine care feel as natural as listening to music.

We’ve already built and launched our first version app, welcomed hundreds of engaged users in just 2 months with zero marketing spend, and are seeing users return and continue to love the experience. With early investment secured and strong organic traction, Zenna is now scaling toward its next stage of growth.

Backed by a team of Cambridge alumni, former Zendesk Head of Product, and medical doctors, our mission is to harness neuroscience and AI to create safe, personalized, and instantly accessible wellness solutions—without drugs, side effects, or invasive devices.

Why join us?

• Massive impact: Migraines affect over a billion people worldwide, yet current options are slow, invasive, or ineffective.
• Game-changing solution: Non-invasive and effective approach that blends neuroscience, AI, and sound to create an instantly accessible experience through a mobile app.
• Early traction: Proven organic growth, strong user love, and early investment backing give us a head start in the wellness and digital health market.

Tasks

Who we’re looking for

We’re seeking a cofounder-level Chief Marketing/Growth Officer to lead Zenna’s next stage of user growth and retention.

What you’ll do

• Design and run creative growth experiments across TikTok, Reddit, influencers, and wellness communities
• Translate consumer insights into product feedback and growth strategy—your visibility and market understanding will directly shape the product roadmap
• Craft and scale Zenna’s brand narrative for users, investors, and partners
• Build and own the marketing engine that takes Zenna from early traction to broad adoption

Requirements

What we value

• Proven track record in consumer app growth/marketing (experience in wellness/health apps strongly preferred)
• Startup mindset: resilient, resourceful, fast executor, thrives in uncertainty
• Background from strong universities or prior startup experience (a plus for fundraising credibility)
• Commitment to building long-term and growing Zenna as a category-defining brand

Benefits

The offer

• Cofounder-level equity and the opportunity to grow into a key leadership role
• Dedicated budget to execute growth initiatives, with flexibility to allocate across ads, operations, or your own compensation during the trial period
• A chance to define and own Zenna’s growth strategy from day one, shaping both marketing and product direction
• We’re looking for someone who can join us immediately and start driving impact right away

If you’re excited about transforming migraine care and want to be part of a world-first migraine tech breakthrough, let’s talk.

Apply / DM us if you’re ready to build the future of migraine relief—starting now.