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About us

Meet the team

Welcome to our engineering office, where professionalism meets a friendly and relaxed environment. We believe in tailoring our expertise to your specific needs and, through direct contact with Jan Stelcl, our dedicated specialist, we can give your desired project a personal touch.
 
“By wisdom a house is built, and by understanding it is established”

Proverbs 24:3, Bible
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Jan Stelcl

Founder & CEO

​Completed his Master's degree in Civil Engineering in 2012. He enjoys a Czech beer or a good Swiss Möhl. Jan appreciates spending time outdoors with his wife and two young sons. ​

Celia Stelcl

Administrator

A qualified speech and language therapist. Here at JSI for good communication and support. Enjoys a foamy chai latte or a good English cup of tea, when not running around with her young boys.

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Let's chat about your next project!

Contact

 â€­+41 76 361 14 50‬

Disclaimer

Jan Stelcl Ingenieur GmbH
Blumenstrasse 2

8500 Frauenfeld
Switzerland

© 2025 Jan Stelcl Ingenieur GmbH.

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