Michael Marsack
Growth & GTM Engineering · Open to remote roles

Michael Marsack · Growth & GTM EngineeringI build products that grow themselves.

Paid acquisition, referral loops and in-app moments people want to share. $2M+ in spend, 30,000+ users, under $30 each.

Let's talk See the proof Résumé
  • $2M+Ad spend managed
  • 30K+Users acquired
  • <$30Cost per acquired user
Act I · What I'm best at

Pick a skill. Watch it work.

Skill 1 of 4

Growth & acquisition

$2M+ in ad spend. 30,000+ users. Under $30 per acquired user and under $100 per engaged user, in a crowded consumer AI market. At Hello Haven I ran influencers alongside paid, built the referral program and its in-app UI, and built the marketing site and every landing page.

See it inHaven's growth engine Analytics and referrals
Act II · Try it

Don't take my word for it. Run the numbers.

Three small, live models of how I think about growth. Change the inputs and watch what moves.

Users a month today
At under $30 per user

$30 is what I reached at Hello Haven, in consumer AI, across $2M+ of spend. Every market prices attention differently; the first conversation is about yours.

Act III · My story

Competitor. Operator. Founder. Builder.

  1. Roots

    Raised to own the outcome

    I grew up in a family of blue-collar business owners where the standard was simple: figure it out, or let me do it. It made me resourceful early, and it's still how I work. I take the problem, not just the task, and when something is beyond me, I learn it fast or call someone in my network who has already solved it.

  2. Competitor

    Division I track

    Division I track is a sport where every rep is timed and every result is public. It taught me to train for the metric that matters and to stay accountable to it. If it's not hard, it's not worth doing.

  3. 2021 to 2023

    Operator

    I came into technology through operations. At Word On The Block I went from Head of Operations to COO in nine months, then ran operations as fractional COO of Salesa AI, an AI outbound sales product.

  4. 2022 to now

    Founder

    I founded Martech Studios and acquired a micro SaaS. I've closed $750K+ in sales personally and built the technology and marketing systems for companies that have raised $25M+ combined, across 50+ projects.

  5. 2026 to now

    Building personal AI

    As Director of Growth Engineering at Hello Haven, a personal AI company valued at over $50 million, I own both sides of the business: real-time vision and calling in the product, and the growth engine that acquired 30,000+ users at under $30 each.

  6. Next

    The interface that acts for you

    Software is shifting from tools people operate to agents that act on their behalf. The companies that win will make that shift feel simple and trustworthy. That's the product problem I want to spend the next decade on.

Act IV · The proof

The proof.

Seen enough? Send me the problem you're stuck on. I'll reply with how I'd attack it.

Send me a problem Get the résumé
Act V · How I work

How I work

  • Build the moment people share

    Products spread through moments worth showing someone. I build those in, so every user brings the next one.

  • Fewest clicks to aha

    Every click is a chance to lose someone. Sign-up lives on the landing page and works for everyone. Getting there takes hard cuts.

  • 10 who love it beat 1,000 who don't mind

    Love spreads. Okay doesn't. I build for the 10.

  • Listen, then cut

    Listen hard enough and customers tell you exactly what to remove. Fewer clicks, happier people.

How I teach a product

Teach inside the product. Everything else is a fallback.

Use the highest rung you can. Each step down reaches fewer people.

  1. Interactive guides with videoTeach inside the product, at the moment someone needs it.
  2. No interactive guide? Make videos.Show the exact clicks.
  3. No videos? Write posts with pictures.Screens, arrows, one task per post.
  4. No pictures? Write one very specific post.Answer one question completely.
  5. Nothing at all?Then you don't have a business.
Act VI · What you get

What your team gets.

  • A growth engine

    Paid, referrals and landing pages at under $30 per acquired user.

  • A video team and ad network

    I'll stand up a production team and run the ad network of your choice.

  • Support on every channel

    Answers people wherever they reach you, and scales as you grow.

  • Product updates on autopilot

    Release notes and update posts that publish themselves the moment you ship.

Quick learner. Faster decision maker.

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
Encore

Hiring for something else? Pick the role.

Product & Growth The product, and the engine that grows it. AI Engineering Real-time voice, vision and agents, shipped end to end. Product Engineering Web and mobile products where every screen earns its place. Product Management Listening, hard cuts and features that ship. Strategy & Special Projects Operations, sales and the hard, undefined problem.