2026 40 Under 40: Robby Deem, LEED AP BD+C, WELL AP, 38

Principal, Vice President, TEECOM; MAE, Illinois Institute of Technology

Known for integrating technical expertise with a human-centered design approach, Robby Deem has built a career as an acoustical consultant, educator and team leader. His work spans architectural acoustics, environmental noise and vibration and multidisciplinary project management, where he emphasizes clear communication and measurable performance outcomes. Deem’s work life reflects a steady progression from technical specialist to trusted leader, with a strong foundation in both creative and engineering disciplines. Early in his career, he developed a “seller-doer” mindset that continues to shape his client relationships, grounded in responsiveness, long-term partnerships and consistent delivery. Deem manages multidisciplinary teams by fostering a culture of accountability, mentorship and professional growth. He is known for his ability to communicate complex ideas with clarity, while coaching team members to develop their own expertise. His commitment to sustainability is reflected in his credentials and design experience, including contributions to one of the first projects to achieve both LEED Platinum and WELL Platinum certification. Education and industry engagement are central to Deem’s professional identity. He served as an adjunct professor teaching acoustical modeling and remains active in organizations spanning acoustics, sustainability and the built environment. His work is driven by a continuous effort to improve how ideas are communicated and implemented across disciplines. Beyond the office, Deem is an avid runner and has completed the Chicago Marathon 14 consecutive times. He also prioritizes outdoor exploration, working toward visiting all 63 U.S. national parks and enjoys skiing, photography and continuous learning, including studying Spanish.

Consulting-Specifying Engineer
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Consulting-Specifying Engineer

Consulting-Specifying Engineer provides engineering professionals working in nonresidential construction and retrofit applications with the most current and relevant content on topics like codes and standards, mechanical/HVAC and electrical systems, fire and life safety, building automation and other related technology.