Cookie Notice: This site uses cookies to provide you with a more responsive and personalized service. By using this site you agree to our use of cookies. Please read our privacy statement for more information on how we use cookies.


Gregorio Hassan Castellanos Alday

Learn more about J.S. Held's recent acquisitions of VWM Analytics and Twenty First Century Engineering.

Read More close Created with Sketch.
Gregorio Hassan Castellanos Alday

Senior Consultant


+52 55 54818130 (Work)
Av. Revolución 1911
Mexico City, MX 01000

Gregorio Hassan has over eighteen years of experience in process, construction, commissioning, operation & maintenance in mechanical and electrical equipment and systems. Providing engineering support for monitoring, troubleshooting, assistance during start-up, and technical recommendations for major multi-disciplinary projects.