CEO & Principal
Michael A. Bunting

Michael A. Bunting

Founding Partner of ATIGROUP
December 1986


  • Steam Propulsion Engineering – United States Navy 1970
  • Heating, Air Conditioning and Refrigeration - United States Navy 1972
  • Air Conditioning, Heating and Refrigeration – Ferris State College 1977
  • Trane - Commercial Service Training 1979
  • Trane - Centrifugal and Absorption Service Training 1981-1982


  • Entrepreneur- ATIGROUP 1986-Present

“I will do whatever it takes to keep a full service, design/build professional mechanical, electrical, and plumbing engineering firm and service contracting company operating; providing valuable services to our hundreds of customers throughout the mid-west.” – Mike Bunting

Michelle Landon

Michelle Landon

ATIGROUP team member since:  2003

Northwood University, Midland, MI 2001
BBA - Management

Michelle has had life-long exposure to ATIGROUP.  She started learning the industry at the age of 16, when the company was Air Tech Incorporated, working through summer vacations as the truck driver and laborer for project and service agreements.  Her duties included parts delivery, cleaning up work areas, hanging sheet metal, changing filters and cleaning coils.

After graduating high school she moved to Midland, MI where she attended Northwood University, graduating with a Bachelors of Business Management degree. In May 2003 Michelle hired on to ATIGROUP full time and began her career working to understand how ATI can help their customers reduce their owning and operating costs focusing on Business Development. Michelle was promoted to President of ATIGROUP on June 17, 2013, where she continues to help grow the business and support their existing customer base while working with their superb team to continue to be a leader in the industry.

Director of Engineering

Ali Shirazi, Ph.D., P.E.

Director of Construction
Scott Rychel

Sherri West


ATIGROUP team member since 2009


Baker College, Flint, MI 1993



Sherri has been employed in the field of accounting for over 30 years.  After graduating high school and accepting a scholarship to Baker College in Flint she graduated in the summer of 1993. During this time, she had already begun her career with her first externship from Baker College where the position lasted 16 years, moving into the highest position the company could offer at the time of her employment.  To further her career into management she left the company.  She then spent two years in management with a furniture company before taking her position at ATIGROUP.

After spending over 10 years in the Business Systems Manager position with ATIGROUP she was promoted to Controller in February of 2020.

Director of Service Operations

David Nagel