M.J. Jiaras, Psy.D.Senior Partner
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M.J. Jiaras, Psy.D.

M.J. is a seasoned executive coach and facilitator who blends practical and academic experience with widely-regarded expertise in group dynamics. His unique combination of insight, creativity, humor, wisdom and genuine warmth has enabled him, for over a decade, to help Brimstone clients achieve superior results in their quest for leadership excellence. Fortune Magazine voted two of M.J.’s coaching clients to their list of the nation’s “50 Most Powerful Executives”. His knowledge of human nature combined with his years of experience working with senior leaders allow him to assess each situation quickly, offer valuable insights, and develop an action plan. Helping executives renew, retool and expand their leadership “toolkit” is a focus of M.J.’s work. As a member of the Brimstone team, M.J. has helped clients at companies that include Biogen, ComEd, Motorola Solutions, and Waste Management.

M.J. holds a B.S. in Psychology from the University of Wisconsin and his Psy.D, Clinical Psychology and M.A. from the Illinois School of Professional Psychology. He currently resides in Winnetka, Illinois with his wife and son.


Playing lead guitar with local bands, biking the Green Bay Trail, trying to sink 4 footers, dining out with my wife, taking too many pictures, laughing with friends, creating original artwork with my son

We're looking forward to hearing from you!

Patrick Jonesingrid jackson