No. 6 — Henderson Engineers, Inc.
Henderson Engineers is a national building systems design firm. We provide a wide array of design services — acoustics, architectural lighting, audio-video, broadcast services, code consulting, commissioning, construction management, electrical, fire and life safety, forensics, mechanical, plumbing, refrigeration, retro-commissioning, security, sustainability, and technology — all under one roof, with one point of contact. Together with our subsidiary, Henderson Building Solutions, a construction management and commissioning firm, we are truly your partner for the life of the building. At Henderson, we believe in giving back to the communities where we live and work. In fact, we give all employees 16 hours of paid time off each year to volunteer. Some of Henderson’s senior leadership team spent an afternoon helping to prepare meals at Harvesters, a community food network serving Missouri and Kansas. It was just one example of how we live out the Henderson mantra of "Work Hard, Play Hard, and Give Back" every day.
2018 Electrical Design Revenue: $70 million