About Simplex

Professionals in Construction Project Management

Simplex Construction Management, Inc. (Simplex) is a California-based professional consulting firm. Founded by Roger Soneja, P.E. in 1988, Simplex provides construction project management services.

Simplex is committed to the management principles of placing the client first and making the client's objectives its own, building a team relationship between client, architect/engineer, and contractor, and making timely decisions based on professional experience and judgment.

Certified as a Minority- and Disadvantaged-Owned Business Enterprise (MBE/DBE) firm, Simplex carries certification from the following government agencies:

• California Department of Transportation (caltrans)
• City of Los Angeles
• Metropolitan Transportation Authority
• Orange County Transportation Authority

President Roger Soneja P.E. has positioned Simplex as a client-oriented business that operates independently of affiliations with architects, engineers, contractors, and developers in order to provide unbiased services to its clients.

Simplex maintains high insurance limits of one million dollars ($1,000,000) for professional, general comprehensive, automobile liability, and worker’s compensation to protect Simplex and its clients.