Dwyer Engineering provides mechanical, plumbing, electrical and fire-protection engineering for buildings. The company has design teams that concentrate on grocery, multi-family, office, restaurant and retail projects. From its offices in Leesburg, Va., and Burtonsville, Md., Dwyer has done drawings for sites from Florida to Arizona to New England. The company listens to the client and works with the architect and contractor to ensure that a building works well for its owners and tenants. Dwyer studies equipment, studies a site, takes over problems and produces buildable designs that create comfortable, manageable space.