WDF Inc.
John Callaghan has over 25 years of experience in various leadership roles within the construction industry. John served as the Vice President of Operations at WDF Inc. from July 2016 to present. Prior to that, they worked as the General Superintendent at Airtech Systems, Inc. from May 2011 to July 2016. From January 2001 to March 2011, they held the position of President and CEO at Empire Sheet Metal, Inc. John began their career at Skyline Sheet Metal, Inc. in December 1993 as the COO, a role they held until January 2001.
John Callaghan attended CUNY New York City College of Technology from 1984 to 1988 without obtaining a degree or specializing in any specific field of study.
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WDF Inc.
WDF Inc. (founded in 1929) is one of the nation’s leading plumbing, HVAC contracting and specialty general contracting companies. We have joined with Five Star Electric Corporation and Nagelbush Mechanical to form GreenStar Services Corporation as a diversified full service construction company. WDF Inc. has worked with the nation’s leading owners, general contractors, architects and engineers on many significant construction projects including high rise construction, waste water treatment plants, educational facilities, transportation systems and infrastructure projects. Our projects serve the private and public sector markets. We are proud to have worked on many prestigious construction projects such as The Time Warner Building, Rockefeller Center, Lincoln Center, Yankee Stadium, Madison Square Garden, Seven World Trade Center and Goldman Sachs' Lower Manhattan Headquarters. We are committed to continue our diversified services building complex projects of distinction, with fiscal responsibility and high quality. WDF has been ranked as the #1 plumbing contractor in New York by McGraw-Hill Construction's New York Construction Magazine.