Mark A. Bonk

Mark Bonk

Title: Director of Operations
Serving Since: 2007

Mark also serves as a Director of Operations at RJB. He has over 36 years of experience in business, facilities management and janitorial. As a Regional Manager Mark is responsible for the company’s North, Northwestern and Western geographic accounts. Mark is also certified as an Incident Commander: First Responder—Department of Homeland Security; certified Breathalyzer Administrator—State of Illinois; and certified HVAC Technician—Washburne Trade School.

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Our Executive Team
R. Joseph Blackstone President

R. Joseph Blackstone
President

Angela M. Shumpert

Angela M. Shumpert
Vice President

Mark A. Bonk

Mark A. Bonk
Director of Operations

Dana M. Williams

Dana M. Williams
Director of Operations

G. Elena Valdes

G. Elena Valdes
Director, Human Resources

Robert A. Scheffler

Robert A. Scheffler
Director, Training & Safety

Ta Shaunda L. Shumpert

Ta Shaunda L. Shumpert
Director, Business Development & Marketing