C. A. Lettsome Services-Engineering Firm in Atlanta, GA. We are a minority-owned engineering solutions company that focuses on delivering quality Mechanical Electrical and Plumbing (MEP*), electronic circuits, signal processing, communications and software design solutions for implementation and analysis purposes. Our principal is a licensed professional engineer consultant and contractor with more than 20 years experience in delivering engineering solutions through research, design and consulting. *Licensed Professional Engineer in Florida, Georgia, and South Carolina.