Michael Marsack
Hello Haven · 2026

Haven's growth engine

Director of Growth Engineering

I built and ran the system that brings users to Haven: paid campaigns, influencer partnerships and the marketing tech underneath them, in a crowded consumer AI market.

$2M+Ad spend overseen
30K+Users
<$30Cost per acquired user
<$100Cost per engaged user

What I did

  • Ran paid campaigns across multiple ad platforms alongside influencer partnerships.
  • Built an automated system that posts ads across platforms.
  • Set up the company's whole marketing tech stack, the external marketing site and landing pages.
  • Kept cost per acquired user under $30 and cost per engaged user under $100.

Skills shown

Growth engineeringGTM engineeringPaid acquisitionAutomation

Want this on your team? I'll bring the same playbook to yours.

Send me a problem Get the résumé

More work

Analytics and referralsThe full analytics stack, from marketing attribution to in-product usage, plus the referral program and the in-app UI that drives it.Haven VisionA real-time feature that lets Haven's AI see through your camera, talk with you live and draw on its memory of you.Live calls and screen shareFaceTime-style video calling and screen sharing, so Haven can walk users through a task step by step on their own screen.
Finale · Let's talk

Got something hard? Let's build it.

I want a long run on a product that's hard and matters, with people who've stayed up until 2 a.m. on something because they couldn't put it down.

Open to remote roles in AI engineering, product engineering, growth and GTM engineering, product management, strategy and special projects.

Send me a problem

P.S. Not hiring yet? Send it anyway. One line about the hardest product or growth problem on your plate gets you my honest take on how I'd attack it. No pitch attached.

Emailmichael.david.marsack@gmail.com
LinkedInlinkedin.com/in/michael-marsack ResumeRead it on one page