Skip to content
Juan Rangel
Dallas–Fort Worth, Texas

I design, build, and operate the systems a healthcare company runs on.

I am the CTO and co-inventor at Nemedic, where I have been the sole technical owner of the stack since 2016 — the architecture, the code, the infrastructure, and the products patients actually touch. I still ship production systems myself.

A distant airliner crossing a deep blue-grey sky, half dissolved into heavy cloud.
Crossing
Patent
US 12,592,322 B2
Co-inventor. Granted March 2026.
At Nemedic
Since 2016
Sole technical owner of the stack
In production
Three platforms
Patient messaging, conversion, and directory
Based in
Dallas–Fort Worth
Working remotely across the US

Selected work

Systems I designed, built, and still run.

Selected work

Currently
  • Rebuilding a ten-year-old patient messaging platform as an AI-first system, with a human able to take over any conversation at any time.

  • Working out what stays durable for engineers as coding agents spread. My answer so far: architectural judgment, AI orchestration, and domain expertise.

  • Growing into the half of the CTO role that is not engineering — strategy, pricing, and go-to-market.


Notes

Things I worked out by building.


Outside the terminal

I shoot wildlife, aircraft, and the moon, mostly in the hour either side of dark. It is the one thing I do where the constraint is patience rather than architecture.


Contact

me@juanrangel.com

The conversations I am most interested in: healthcare systems, architecture under real constraints, and rebuilds of things that have been running a long time.