Josh Karasik
Josh Karasik

Josh Karasik

Software Engineer · Los Angeles

Building software that makes hard things feel effortless.

Software Engineer at PennyMac. Founder of Tightcut. Co‑founder of ShalomLA.

Where I've built things

  • PennyMac
  • Tightcut
  • RoviSys
  • International Medical Devices Inc.
  • ShalomLA

What I focus on.

AI for real business problems

Finding where AI actually moves the needle, then shipping it.

Consulting

Helping teams figure out what to build and how to build it.

Leadership & community

Getting people together, from engineering teams to 550-person events.

Automation & innovation

Turning hours of manual work into something that just happens.

My work.

PennyMac logoNow

Software Engineer

Platform team behind the apps that run one of the largest mortgage lenders in the U.S. Tooling, telemetry, and a lot of AI.

  • AWS
  • Serverless
  • AI
RoviSys logoEarlier

Software Engineer

Built the operator GUIs for a Google AI data center and tested them on site in Arizona.

  • GUI
  • Automation

A little more about me.

Based in LA. I've played piano since I was four, I'm always hunting for a new coffee spot, and I travel whenever I can.

Josh at a grand piano
Josh with an iced coffee at a farmers market in New York
Josh in Hakone, Japan, with Mount Fuji behind him

Let's build something.