Felskern
My agency: AI-first digital growth for healthcare in the DACH region. No employees, but agents running around the clock.
felskern.de →I build systems,not slide decks.
Hai Bang Tran. Founder of Felskern, software engineer, operator of agent-operated marketing systems for healthcare.
Now
Verileads
B2B lead generation for healthcare providers. Our own product, in development.
Healthcare venture
Patient acquisition marketing for a specialized clinic, together with partners. In operation since 2026.
Path
Banking IT
Integration and interfaces in an industry where mistakes cost real money. That is where you learn to build cleanly and think systems through to the end.
Independence
Digital projects for companies: websites, campaigns, tracking. And the realization that most agency work consists of repeatable routines.
Felskern
An agency designed as software. Whatever happens twice gets automated. Whatever needs judgment, I do myself.
Method
Measure before you opine
First the current state and the data, then the recommendation. Never the other way around.
Systems over hours
I do not sell hours. I build machines that get work done.
The details are mine
Execution can be delegated, understanding cannot. I know what my systems look like inside.
Honest numbers
A success that cannot be proven does not count. A failure gets named, not talked around.
Tools: Claude Code, Python, Astro, GA4 and GTM, Airtable, Make
Contact
For healthcare marketing projects: felskern.de. For everything else, a short email will do.
info@haibang.de