Jimmy Jackson
President
Aftermarket Sales
Product Support Specialist

Jimmy is President of Ressler & Associates. He joined Ressler & Associates in March of 2018 as an Aftermarket Sales/Product Support Specialist. He has over 27 years of operations and maintenance experience in the water and wastewater treatment industry and holds active operator certifications in Missouri. Jimmy is married and has two children and one grandchild.


Email Jimmy at jjackson@resslerassociates.com
Cell: 314-550-8097


Brad Calzone
Vice President
Sales Engineer


Brad is a native of St. Louis and graduated from Missouri University of Science & Technology with a degree in Mechanical Engineering. He has extensive experience in the design and construction of industrial process systems and brings a wealth of practical knowledge with him. Brad promotes products to engineers, water and wastewater treatment facilities, and local industries.


Email Brad at bcalzone@resslerassociates.com
Cell: 314-609-1224


Michael Heitert
CFO
Sales Engineer


Michael earned his BS in Mechanical Engineering from the UMSL/Washington University Joint Engineering Program in 2015. Since 2013, he has gained extensive experience in both inside and outside sales, serving industrial and municipal clients with dedication and expertise.

A proud husband and father of two—a son and a daughter—Michael values quality time with his family above all. He enjoys coaching his kids in any sport they want to play, fostering their growth and teamwork skills. A St. Louis sports enthusiast and NASCAR fan, he also enjoys golfing, woodworking, and playing soccer whenever he can find a spare moment. Whether cheering on his favorite teams or crafting in his workshop, Michael’s passion and focus shine through in all he does.


Email Michael at mheitert@resslerassociates.com
Cell: 636-557-2273


Ken Ressler
CEO
BS Civil Engineering
North Dakota State University

Ken was with a manufacturers’ representative firm in Minneapolis for 5-1/2 years where he was in process equipment sales. Ken moved to St. Louis in 1981 and became a partner in Pohlkotte Ressler Corporation. In May of 1991 Ken purchased the company and the name was changed to Ressler & Associates, Inc. Ken continues to help with sales and company management.


Email Ken at kressler@resslerassociates.com
Cell: 314-409-4976


Jim Hopkins
Vice President of Sales
Sales/Certified Operator
Water/Wastewater

Jim is a native St. Louisan, with 40 years’ experience in the industry, most with Ressler & Associates. He holds certifications for the operation of both water and wastewater treatment facilities. Jim's responsibilities include providing support for the rest of the Ressler sales team, and special projects. His hobbies include shooting, golf, hunting, and fishing. Jim plans to be on the course more over the next several years as his career winds down.


Email Jim at jhopkins@resslerassociates.com
Cell: 314-409-4975


Sue Petersen
Office Manager
Accounts Payable/Receivable


Sue manages all administrative responsibilities for the company. She also supports the sales team by generating quotes and processing & tracking orders. Sue has been with Ressler & Associates since 2013.


Email Sue at spetersen@resslerassociates.com


Ressler & Associates, Inc. | 636.391.8992 | P.O. Box 4018, Ballwin, MO 63022-4018
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