Member of the Bar


Certified BIM Manager, Building and Construction Authority of Singapore (BCA)


Certified Program Management, Philippine Constructors Association (PCA)


Senior Executive Institute (SEI) Batch 23 of the American Council of Engineering Companies (ACEC)

March 2022

FIDIC Certified Consulting Practitioner, FIDIC Credentialing Limited


FIDIC 2019 Young Professionals Management Training Programme (YPMTP)


Member of the Panel of Judges, Philippine Property Awards

July 2022

Member of Philippine Institute of Construction Arbitrators and Mediators, Inc.

Accredited as Construction Arbitrator of Construction Industry Arbitrator Commission (CIAC) 

Chief Executive Officer

Jean Jacquelyn Nathania A. De Castro, LL.B.

A lawyer by profession, Jean is an experienced litigator with extensive construction arbitration and commercial litigation experience.

She is the CEO of ESCA Inc., a Filipino-owned full-service engineering consultancy firm leading technology-driven solutions for the built environment. ESCA provides structural and civil works engineering and project management services to both public and private projects. She also leads ESCA International Inc. (EII), a pioneer in engineering outsourcing services outside the Philippines.

She is a certified BIM Manager by the Building and Construction Authority (BCA) of Singapore and a certified Program Manager of the Philippines Constructors Association (PCA). Jean is also the only Filipino to have graduated from the Senior Executive Institute (SEI) Program of the American Council of Engineering Companies (ACEC) in the United States. She is also a trained arbitrator of the Philippine Dispute and Resolution Center (PDRCI).