Spectrum Engineering, Inc. is an electrical engineering firm established in 1995, that has a staff of highly qualified individuals with extensive expertise in transportation, water treatment, industrial, commercial, and other sectors. Our principals, Sophia Shadkin and Gregory Shadkin combine extensive experience in conducting studies, preparation of reports, and providing design and construction administration services on large and small scale projects in the Chicago Metro area as well as across the state of Illinois.

Clients appreciate the firm's compact size allowing them to interact directly with Spectrums engineer(s) managing their project. Our long term relationships with many clients demonstrate their satisfaction with Spectrum's high quality of work and timely services.

Spectrum Engineering, Inc. is a DBE certified firm with the Chicago Transit Authority, Metra and PACE; and is WBE certified with the City of Chicago, Cook County, Metropolitan Water Reclamation District and State of Illinois Central Management Services.