The Firm

Kaltsouni Mehdi, Inc. is a woman-owned and operated firm certified with many agencies as WBE. We are licensed to practice architecture and engineering in many states. The firm’s principals and staff have outstanding qualifications developed from years of experience in designing and managing domestic as well as international projects of significant scope and size. Our staff has been involved in the design and construction management of numerous public/private/residential buildings, hi-tech facilities, parks, parking lots, train stations, transit facilities, roadways, bridges, concrete dams, gates, penstocks, transmission towers, and fluid flow analysis.


KMI was established in 1997 as an architectural and engineering firm. Since our inception, we have continued to expand our staff, technical abilities and diversify to provide A/E services to many city, state, federal government as well as private developers and clients. Some of our transit facility projects have won the Chicago Landmark Award for Preservation Excellence and have been published in the local papers.

Professional Registrations


  • Illinois
  • Wisconsin


  • Illinois
  • Ohio
  • Nevada
  • Wisconsin


Maria Kaltsouni, Ph.D., P.E., S.EPrincipal/Lead Structural Engineer
Dr. Kaltsouni is the president of the firm. In addition to her management responsibilities, she is also the Principal Structural/Civil Engineer responsible for the analysis and design of Civil and Structural projects. Her areas of expertise include Finite Element Analysis of 2D and 3D structures, steel, concrete and timber design, static and dynamic analysis and structural evaluation of various structures.
John MehdiVice President
John Mehdi is a founder, partner and vice president in the firm. His responsibilities include project programming, project design, project team management, project acquisition and management as well as contract negotiation. His more than 30 years of professional practice in the fields of architecture, engineering and construction management as well as more than 25 years of experience in the field of Railway Facility design and construction, has earned him invaluable experience.