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Architect / Firm Partner

Gillian Stechschulte

Gillian received her Bachelor and Master of Architecture degrees from Miami University, is a member of the AIA, and holds her NCARB certificate. Gillian enjoys bringing a fresh design perspective to her hometown in northwest Ohio.

Project Manager / Firm Partner

Tony Hovest

Tony is one of the founding partners of Technicon Design Group. He has served the local design and construction market for over thirty-five years. Tony’s expertise in construction detailing and project coordination is an invaluable asset to the TDG team.

Project Manger / Firm Partner

Kevin Niese

Kevin has been an employee of TDG since 2005. He currently serves as a Project Manager and Human Resource Coordinator. Kevin has a strong construction background and leads many of TDG’s projects through construction.

Mechanical Engineer / Firm Partner

Scott Birkemeier, P.E.

Scott is TDG’s lead Mechanical Engineer with over 18 years of experience in the design of mechanical and plumbing systems for a wide variety of commercial, industrial, and institutional project types.


Jenna Verhoff

Jenna received a Bachelor and Master of Architecture degrees from Bowling Green State University. Jenna works in 3D computer modeling and rendering with the Architectural team to bring life to our projects.


David Burgei

David received a Bachelor and Master of Architecture degrees from University of Cincinnati. David works as part of the Architectural team creating 2D & 3D designs to meet our clients needs.

Electrical Engineer

Joe Ellerbrock, P.E.

Joe received Bachelor of Science in Electrical Engineering from the Ohio State University and has a background in Industrial Controls Design and Power. He recently earned his Professional Engineering License.

Structural Engineer

Betty Corkwell, P.E.

Betty received a Bachelor’s degree of Science in Civil Engineering from Clemson University and is a licensed Professional Engineer in the State of Ohio and Michigan. Betty is experienced in the design of steel, wood, and masonry structural assemblies.

Senior Designer

Kevin Wischmeyer

Kevin has thirty years of experience in the architecture industry, working on many large commercial, educational and medical projects throughout his career. He leads production for many of TDG's projects.

Senior Designer

Todd Gerdeman

Todd has been an integral part of TDG since its inception in 1995. He has over thirty-two years of experience in architectural and structural detailing, and he also serves as a field representative and construction administrator at TDG.

Senior Designer

Jeff Mangas

Jeff worked in the concrete construction industry for several years prior to joining the TDG team over ten years ago. He is experienced in architectural, structural, mechanical and plumbing detail drawing and serves as a field representative for many of our projects.

Senior Designer

Amber Palte

Amber received a Bachelor’s degree of Interior Design from Bowling Green State University. Amber produces interior and architectural design and production drawings for many of our projects as well as serves as a project manager.

Senior Designer

Ashley Reivydas

Ashley received a Bachelor’s of Interior Design from The Ohio State University. After graduating, Ashley worked in retail design at a national brand before spending six years working in healthcare interior design. In 2021 Ashley and her family moved back to her hometown of Ottawa Glandorf where joined the TDG team as a Senior Designer soon after

Mechanical Engineer Intern

Ryan Ashley

Ryan is currently pursuing his Bachelor's degree in Mechanical Engineering from Purdue University

Contract Administrator

Sandy Knueven

Sandy has worked in construction administration for over fifteen years. She is an asset to the TDG team as she provides a high level of efficiency and organization to our projects under construction.

Office Administrator

Michelle Johns

Michelle ensures that all of our projects remain organized, and is vital to the successful daily operation of our business.

Senior Advisor

Gary Ungerer

Gary is a founding partner of Technicon Design Group and has been a licensed Architect in the state of Ohio since 1981. He has served as a Building Official, Plans Examiner, Field Inspector, President of the Ohio Building Officials Association and as a member of the International Code Council.

Meet Our Team


Technicon Design Group was founded in 1995 by Tony Hovest and Gary Ungerer. From its conception, TDG has sought to collaborate with both Project Owners and Contractors. Through the production of construction documents of the highest level of quality, the team has experienced continued success. Over the past two and half decades, TDG has responded quickly to market needs and have gained experience in a wide variety of project types. 


For over two decades, TDG has created value for clients through innovative built environments. Successful projects begin and end with satisfied clients. TDG serves as the owner's representative and advocate. They are committed to seeing your vision meet its greatest potential.

Our Associations

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