# Michael Marsack

> Michael Marsack is a growth and AI product engineer based in Durham, North Carolina, open to remote roles. He is Director of Growth Engineering at Hello Haven, an AI personal assistant startup, and founder of Martech Studios, a software studio.

Key facts:

- Hello Haven (Mar 2026 to present): oversaw $2M+ in ad spend, grew the user base to 30,000+ users, cut cost per acquired user below $30 and cost per engaged user below $100. Built Haven Vision (real-time camera AI) and FaceTime-style video calling with screen sharing.
- Martech Studios (Oct 2022 to present): closed $750K+ in sales personally and delivered 50+ web, mobile and machine learning projects.
- Previously COO of Word On The Block (promoted within 9 months) and fractional COO of Salesa AI.
- Education: BA, Evolutionary Biology, Duke University.
- Looking for: AI engineering, product engineering, growth and GTM engineering, product management, strategy and special projects roles.
- Contact: michael.david.marsack@gmail.com · https://www.linkedin.com/in/michael-marsack/

## Story

Division I track athlete turned operator, founder and growth engineer. Raised in a family of blue-collar business owners where the rule was "figure it out, or let me do it." Promoted to COO at Word On The Block within nine months, then founded Martech Studios, acquired a micro SaaS, and helped businesses that have raised over $25 million combined build their technology and marketing systems. Now Director of Growth Engineering at Hello Haven, a personal AI assistant company valued at over $50 million. Interested in personal AI, the future of UX in an AI-first world, and how people will use the agentic web.

## Pages

- [Home](https://michaelmarsack.com/): story, work, experience, principles and skills
- [AI Engineering](https://michaelmarsack.com/ai-engineering/): Michael Marsack builds real-time AI products: camera vision, live calls and agent memory at a personal AI company, plus 50+ projects at his own studio.
- [Product Engineering](https://michaelmarsack.com/product-engineering/): Michael Marsack is a product engineer who builds web and mobile products with the fewest clicks to the aha moment, using depth and motion to guide people.
- [Growth & GTM Engineering](https://michaelmarsack.com/growth/): Michael Marsack builds growth engines: $2M+ in ad spend managed, 30,000+ users acquired at under $30 each, referral loops and in-app sharing.
- [Product Management](https://michaelmarsack.com/product-management/): Michael Marsack is a product leader who listens closely to customers, cuts what doesn't matter and ships AI features from idea to launch.
- [Strategy & Special Projects](https://michaelmarsack.com/strategy/): Michael Marsack has run operations as a COO, built a development studio to $750K+ in sales and stood up growth at a personal AI company.
- [Resume](https://michaelmarsack.com/resume/): full resume as text
- [Full text for AI assistants](https://michaelmarsack.com/llms-full.txt)

## Work

- [Haven Vision](https://michaelmarsack.com/work/haven-vision/): Haven Vision: a real-time camera feature Michael Marsack built for the Hello Haven AI assistant, combining live voice, vision and agent memory.
- [Live calls and screen share](https://michaelmarsack.com/work/live-calls-screen-share/): FaceTime-style video calling and screen sharing Michael Marsack built for Hello Haven, so the AI agent can guide users step by step on their own screen.
- [Haven's growth engine](https://michaelmarsack.com/work/haven-growth-engine/): How Michael Marsack grew Hello Haven to 30,000+ users on $2M+ in ad spend, with acquisition costs under $30 per user.
- [Analytics and referrals](https://michaelmarsack.com/work/analytics-and-referrals/): The analytics stack and referral program Michael Marsack built at Hello Haven, from marketing attribution to in-product usage analytics.
- [Martech Studios](https://michaelmarsack.com/work/martech-studios/): Martech Studios, the software studio Michael Marsack founded: $750K+ in sales and 50+ web, mobile and machine learning projects for founders.
- [Operating leadership](https://michaelmarsack.com/work/operating-leadership/): Michael Marsack's operating roles: COO of Word On The Block (promoted in 9 months) and fractional COO of Salesa AI.

## Optional

- [Martech Studios portfolio](https://www.martech-studios.com/portfolio)