Growth Marketing Lead

Onix (doing business as “Onix”; legal entity listed as 16445039 Canada Inc.); Montreal (administrative region); Hybrid; CAD 70,000 - 110,000; Full time

Job summary

Onix is seeking a full‑time growth operator to own acquisition end to end from paid to activation. You will write ads, emails, and landing pages, run guerrilla tests, and own analytics in a privacy‑first framework. This role sits in our Old Montreal office.

You should have a track record managing consumer campaigns across paid, email, and unconventional tactics, with data to back decisions and a hands‑on approach to testing and optimization.

Qualifications

• Experience owning acquisition for a consumer product with measurable campaigns.
• Comfort across channels: paid media, email, guerrilla tactics, and growth hacks.
• Fluency in Meta and other ad platforms, from campaign structure to bid strategy.
• Comfort with server-side attribution and iOS measurement.
• Ability to say plainly when data does not support a conclusion.

Responsibilities

• Own the funnel end to end across paid, email, guerrilla tactics, and growth hacks.
• Write the ads, the emails, and the landing pages for campaigns.
• Turn ideas into testable variants: one variable at a time and retested winners.
• Own cost per activation and signup in a privacy-first architecture.
• Build paid landing pages and own App Store optimization; collaborate on install handoff.

Skills

Acquisition

Copywriting

Creative testing

Marketing analytics

Landing page optimization

Tools

Meta Ads

Conversions API

Attribution tools

Job description

Generic AI averages the internet. Onix lets you summon the actual judgment of a health and wellness expert who has spent a career on your problem, private and personal: experts already on the App Store include Dave Rabin , Mark Sisson , Ashley Koff , William Li , and Elissa Epel .

We need someone who owns acquisition end to end: the funnel from click to activation, and the honest read on what is actually working. Enough people want this that the real question now is whether we can bring them in predictably, at a cost that works, and know why it worked.

You are a full-stack growth operator: comfortable running the ad account, writing the email, and trying the guerrilla idea in the same week. You build and write the work yourself, in person from our office in Old Montreal.

What You Will Do

• Acquisition. Own the funnel end to end across paid, email, guerrilla tactics, and any growth hack worth trying.
• Copy and content. Write the ads, the emails, and the landing pages that carry every campaign you run.
• Creative testing. Turn ideas into testable variants: one variable at a time, an adequate sample, and retested winners.
• Marketing analytics. Own cost per install, signup, and activation, inside a privacy-first architecture that makes attribution a real creative challenge.
• Landing pages and discoverability. Build our paid pages yourself, own App Store optimization, and partner with product on the install handoff.

Who You Are

• A track record of owning acquisition for a consumer product, across paid and beyond, with real campaigns, numbers, and failures to show for it.
• Comfortable moving across channels: paid media, email, guerrilla tactics, and growth hacks, writing the copy and content behind all of them yourself.
• Fluency in Meta and other ad platforms, from campaign structure to bid strategy.
• Comfort with server-side attribution, conversions APIs, and the general messiness of iOS measurement.
• The rigor to say plainly when your own data does not support a conclusion.

This Role is NOT For You If:

• You want a remote job. We build together in person, in Old Montreal.
• You need a full MMP stack and off-the-shelf attribution to do your job.
• You would rather show a dashboard than say plainly what a number means.

What Success Looks Like

• We know our cost per activated user, computed the same way every time, and it is not a matter of debate.
• Paid is running in-house with a documented test plan and a written record of what we have already learned.
• Our paid landing pages ship without engineering involvement.
• Cost per activated user is holding steady or improving as spend increases.
• Paid delivers a predictable number of activated users a month at a payback period we have agreed on.
• A critique of our socials and site: what you would change, and why.
• A portfolio of ads you have run, and why you made the choices you did.
• Your 30-day plan for us: what you would run first, why, and what result would change your mind.

Esther Dyson, founding chair of ICANN, brought her electrolyte and GLP-1 questions to Ashley Koff's onix, then phoned the real Ashley to compare.

Pete Pachal asks Onix co-founders David Bennahum and Nicholas Nadeau who owns expertise in the age of AI, and who should get paid when it scales.

The Tech Brew Ride Home Podcast spends an hour with Onix's co-founders on expert fidelity, dark data, privacy, and ownership.

At NBJ Summit 2026, Ashley Koff, RD and David Bennahum compared Onix answers with generic AI side by side, then gave a first look at Group Chats.