David L. Duplantis, PE

Founder & Chief Executive Officer



David Duplantis, was raised in Lafourche Parish. When he graduated from college he left Louisiana to seek employment elsewhere. After a few years, David relocated to Thibodaux, LA and chose to open his own firm. He realized, like many others, that there is nowhere else in the world like Louisiana. David has served in a leadership role at DDG since founding the company in 1997, and is currently serving as CEO. Under his leadership, the firm has grown from a single office with a handful of employees to a multidisciplinary services operation with six office locations and nearly 100 talented employees. With the support of his partners, David promotes DDG’s core values of Respect, Integrity, Client Satisfaction, and Excellence internally and externally, and drives new discipline development. He consults on projects when needed as well.


David acts as the executive officer providing vision and long-range strategic planning for the firm; he operates an open-door policy and supports the growth and development of his employees.  David encourages and supports participation by our employees in advancing the quality of life in the communities in which they live and work. These actions may be through leadership, mentoring, or recreational activities. Personally, he gives his time to many local community organizations.



Bachelor of Civil Engineering, 1987 – University of Southwestern Louisiana



American Society of Civil Engineers (ASCE)

International Council of Shopping Centers (ICSC)

American Council of Engineering Companies (ACEC)

Louisiana Engineering Society (LES)

National Society of Professional Engineers (NSPE)

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