Thresa Estopinal


Managing Partner – Human Resources and Finance

Thresa, who co-founded the architecture firm with Wayne Estopinal 32 years ago, manages human resources and finances for the multidisciplinary firm.


John Sprouls


Managing Partner – Architecture

John has led projects from initial design through construction documents with careful and conscientious involvement at TEG. His extensive and thorough knowledge of building codes/systems, shielding and structural requirements, construction document preparation, cost estimating and construction issues ensure quality and service for our clients. John holds more than 30 years of experience in the design and construction of healthcare, educational, commercial, and housing facilities. His experience partnering closely with construction managers and multiple consultant teams, within tight schedules and budgets, directly benefits the operational, clinical, and financial goals of the project.

Jessica Harris Portrait

Jessica Harris, AIA, ACHA, LEED, BD +C

Jessica Harris


Director of Architecture

Working out of TEG’s Shreveport office, Jessica Harris is a registered architect with 19 years experience. Jessica handles a variety of projects, from health care to municipal offices, from schematic design through construction administration and after occupancy facility maintenance. She excels at producing a solid set of construction documents for bids and contracts, and believes that architecture is an expression of clients’ vision and architect’s ideas fused together in a series of dynamic process to produce aesthetic and versatile buildings.

Dwayne Wilson


Vice President – Business Strategy & Planning

Dwayne is an award-winning designer with nearly 25 years of experience in his field of architectural design, business strategy, program development, and management. He has worked diligently with the design and construction industry’s leading executives to grow and expand the ideas and visions of business owners and developers in 25 different states across the U.S., as well as internationally, in Chile and Korea.

Dwayne has an uncommon instinct and understanding of the principles for both development of the owner’s vision, and ultimate Business Management Success. This knowledge has given him the insight to help his clients, partners, and associates create, meet, and exceed goals that bring the true achievement of their dreams.

He has a passion to solve complex problems and enjoys studying those leaders who have the ability to do the same. He travels and teaches business owners and leaders, conducting seminars to “Discover Your God-Given Gifts and More,” locally and abroad. He studies the lives of great men and women who have solved difficult problems and issues that stifle forward progress; that others could not see.