WHo we are and what we stand for

We are the WT Group. One company and one unified vision delivering the premier services of multiple experienced, highly skilled engineering, design and consulting teams serving clients in all 50 states. We solve challenges with the bench strength of the best integrated teams taking a unified approach working towards a common goal.

We measure success in how fully each of our employees is engaged and collaborating in unison on behalf of every client. And we never, ever settle for “good enough,” because every client deserves nothing less than our best. We exceed expectations because it’s the only way we know how to do business.

These are the values that drive the WT Group. Who we are. What we stand for. Precision, pace and passion in everything we do. Because that is what you expect, and that is what you deserve.


Capabilities in all 50 states


Over 150 skilled professionals delivering expertise in every aspect of engineering design and consulting services needed by businesses and municipalities


More than 15,000 projects successfully completed over the past five years


Hoffman Estates Illinois home
W-T Engineering founded by Donald R. Triphahn and William White in Triphahn’s Hoffman Estates home


WT Headquarters Schaumburg Illinois
W-T Engineering moves to a new headquarters in Schaumburg, Illinois


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W-T Engineering expands, establishing a presence in key markets across the United States


WT Headquarters Hoffman Estates Illinois
W-T Engineering returns to its roots, moving into a new, state-of-the-art headquarters in Hoffman Estates


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W-T Engineering becomes the WT Group, offering clients market-leading capabilities for a wide range of needs


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WT Group Celebrates its 50th Anniversary


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WT Group forms official partnership with draftPros, a leading MBE firm in the Telecommunications and Renewable Energy Sectors

A tradition of performance, a commitment to excellence

Formed in 1971, the WT Group grew from humble, entrepreneurial beginnings in founder Donald R. Triphahn’s Hoffman Estates home to a full-service engineering, design and consulting firm committed to providing world-class engineering and design services to a range of clients from local businesses to multinational corporations.

For over 50 years, the WT Group expanded its portfolio of design and engineering services to include Civil Engineering, Heating, Ventilation and Air Conditioning, Plumbing, Electrical and Fire Protection Engineering, Land Surveying, and Telecommunications Engineering. The range of successful projects on which the WT Group has participated includes apartment buildings for the elderly, libraries, financial and religious institutions, gas stations, restaurants, cell sites, office buildings, park district projects and healthcare centers.

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Our Team

Today, operating under one integrated brand, the WT Group consists of experienced engineering, design and consulting teams serving clients in nearly all 50 states. Our professionals have the knowledge and expertise to help project managers navigate all applicable codes, regulations and best practices. And our people bring a passion for customer service and an unwavering commitment to helping clients achieve the results they expect – on time, on budget and delivered to the highest standards of performance.

Meet Our Leadership Team

Achievements & Awards