I help founders get unstuck and get going.

I sold my first company in 2025. Now I'm modernizing entrepreneurship by combining timeless principles and AI-centric systems.

Jonathan Engle
Currently
Startup services & health solutions
Serving
Utah Army National Guard
Languages
EN · RU · ES · PT
Exit
Sold Startup Stack (est. 2020) to Startup Science in 2025

What I do.

Four things have my attention. If you want the running detail of what I'm building this month, that lives on the Now page.

Founder Coaching

I work with early-stage founders to apply timeless startup principles on modern tech stacks, with thoughtful workflows and agentic solutions. I focus on stage-appropriate systems: GTM motion across marketing, sales, and RevOps, plus general startup operations.

Work with me
Kingsfoil Health

Modernizing group benefits through creative plan structures: level-funded, partially self-funded, and PEO partnerships. We're restoring dignity to our healthcare system, one company at a time.

kingsfoilhealth.com ↗
Founder Playbooks

Timeless startup knowledge, your company's own context, and the workflows that tie the two together. Everything a company needs, across every department. I deploy these in startups to accelerate their progress.

See the playbooks
Writing & Thinking

Personal writing on my current interests.

Read the writing

I build the machine, then I run it.

I bootstrapped The Startup Stack to an exit without raising a dollar. Then I ran marketing, revenue operations, and sales by myself for a company with five product lines.

250+
Partnerships grown from 70, with 90+ on revenue share
$560K+
In custom SaaS deals coordinated
10,000+
Subscribers built with no paid marketing
$307,950
Raised on a Reg CF round I ran all the marketing for

Skip the highlight reels and let's just talk.

My writing is less about thought leadership and more about starting a public dialogue on things that are interesting or meaningful.

Let's find the next honest step.

It's hard to find a proper sounding board as a founder. Speak with someone who gets it and can help you get to the next best step toward the outcome you want.

Find me where it makes sense.

Reach me through LinkedIn, X, or the contact form on the Work With Me page.