Yechiel Kalmenson

Software Engineer at VMware

Blogger at Rabbi On Rails

Editor and curator at Torah && Tech

“In life, there's no such thing as staying where you are. If you are not actively growing you are inevitably falling behind."
-The Lubavitcher Rebbe


Yechiel Kalmenson (aka Rabbi On Rails) was born and raised in Brooklyn. He got his rabbinical training in Israel and spent a few years teaching both children and adults.

After a brief stint in Tech Support, he found his next calling and went on to study web development.

He currently lives in New Jersey with his family, using tech to support his passions for teaching, coding, and flying.


Flatiron School

Web Development

United Lubavitch Yeshivah

Rabbinical Studies


VMware - Pivotal Cloud Foundry

Software Engineer

Newtek Business Services

Full Stack Developer

Fidelity Payment Services

Software Integration

Flatiron School

Technical Coach

Shluchim Online School