Lingle Engineers works with clients in the following areas General Contractors, Industrial Clients, Commerical Clients, Property Management Companies & Residential Clients. Contact us at lingleengrs@sbcglobal.net.. Lingle Engineers is a Professional Engineering Firm with Years of Experience. We have a large list of Professional Organizations that we have done Engineering for. We Specialize in Civil,Structural,Foundation,Geotechnical & Architectural Engineering.