Brenan is an architectural engineer for Engenuity. Engenuity is a civil, mechanical, electrical, plumbing, and fire protection engineering and design consultant. Brenan serves the team as an entry-level designer and building engineer while holding several green building credentials. He leads others in organizations such as the American Society of Civil Engineers (ASCE), Architectural Engineering Institute (AEI), Missouri Freemasons, and Missouri Gateway Green Building Council.