Founded in 2010 by principals Jerry Pionessa Jr. and his father G.J. Pionessa, the JMJ Group is a boutique engineering, consulting and planning firm with two locations, one in historic Thomasville, Georgia and the other in coastal Jacksonville, Florida. The team is a leader in the Southeast, driven by a desire to reach solutions that mitigate risk, create value and conserve natural resources.

JMJ’s vision and legacy is building a better future for all communities served, one street at a time.


Gerald J. (Jerry) Pionessa, Jr., P.E. Principal/Managing Member

Jerry oversees the day to day operations of JMJ Group, LLC creating Real Solutions for clients through creative problem solving. His background in design/build project delivery, municipal management, and regulatory compliance makes him the perfect Civil Engineer to partner with a project team from Concept through Construction.

G.J. Pionessa Principal

A 40+ year industry veteran, G.J.’s perspective on highest and best use, income generation, project finance, and construction problem solving is invaluable to the team. He manages a diverse portfolio of client properties and projects.

Evelyn Pionessa Director of Administration

Evelyn draws on her 20+ years of successful business ownership and management in the construction industry to oversee the administrative duties for JMJ Group, LLC. She also provides expertise in the delivery of services and regulatory compliance.

Mark Pionessa, Esq. Corporate Counsel

A proven litigator in construction and insurance claims, Mark lends his legal background to the team to assist in the limitation of liability and reduction of risk for clients in the delivery of real estate and construction projects.

Gary Qiu Engineer in Training

Gary joined the land development practice at JMJ in 2020. He brings his background in water resources from the University of Florida where he received a Bachelor of Science in Environmental Engineering in 2019.
Samantha Salazar-perez CAD Technician Samantha joined the JMJ team in 2019 and shortly thereafter, earned an Associate’s of Applied Science Degree in Drafting Technology from Southern Regional Technical College. She is responsible for drafting and construction plan preparation.


American Council of Engineering Companies
American Society of Civil Engineers
Congress for New Urbanism
Northeast Florida Builders Association
Thomasville Chamber of Commerce

Get to Know Us:

On Instagram @ JMJ Outdoors

On LinkedIn

Get to Know Us:

JMJ Outdoors


Get in Touch:

(229) 516-0977

Two Locations:

330 North Broad Street, F
P.O. Box 1203
Thomasville, Georgia 31799

5711 Richard Street
Suite 4
Jacksonville, Florida 32216