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Meet Our Team

Rudolph J. Liedtke

Rudolph J. Liedtke

Rudolph J. Liedtke
Chief Executive Officer

Rudolph J. Liedtke began his career an electronics technician with Dr. Jan Nyboer, a leading cardiovascular researcher at Wayne State University. Liedtke directly worked with Nyboer, pioneering bioelectrical impedance plethysmography in a variety of medical applications. Liedtke immersed himself in scientific texts and lectures in medicine, technology, chemistry, physics and electronics, eventually heading east to New York.

In the 1960s, Liedtke directed automated machine projects and nuclear technology for the US Navy for Century Detroit, a division of global technology giant Babcock & Wilcox (originally famous for its steam boiler designs hailed by Thomas Edison and used in the first public power generator stations in the 1880s.)

Liedtke left Babcock & Wilcox in 1971 to start Controls Associates, Inc., with business partner Jim Slack, to design and manufacture electronic systems for automotive and machine tool industries. In the mid-70s, Liedtke designed the computer technology used to randomize national coupon systems, to help prevent fraudulent distribution.

In 1979, Liedtke formed RJL Systems to design and build bioelectrical impedance technologies using his own formula which revolutionized the accuracy and reliability of the science. He holds the patent for bioelectrical impedance assessment, as well as several other patents in a variety of technologies, including Micro-Bar coliform disinfection apparatus for water retention basins, a porous, flexible and fungus-resistant polymeric artificial nail, and a biometric health care data system network. RJL body composition analyzers are used by thousands of researchers and practitioners in medical, educational and military settings all over the world. Liedtke continues to lead his engineering team to devise and advance new technological frontiers.

In his leisure time, Liedtke enjoys travel, hiking and reading novels by Ayn Rand, Dean Koontz and David Baldacci. He lives with his wife, Helga in Grosse Pointe Park, Michigan.

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Michael R. Liedtke

Michael R. Liedtke

Michael R. Liedtke
Director of Business Development

Michael Liedtke joined his father at RJL Systems in 2008 as Director of Business Development, after holding executive level positions with Wachovia Bank, W.Y. Campbell & Company, Amherst Partners, General Electric, and Capital One.

Michael has an MBA with a focus on Finance, a BSBA in Computer Information Systems, and his Six Sigma certification. His goal is to continue to steer RJL Systems’ 35 years of innovative and professional technological solutions, to more complex medical and industrial applications, and global distribution.

In his free time, Michael works with entrepreneurial health and medical start-up companies to help foster business growth in the Southeastern Michigan area.  He also enjoys travel, running, biking, and crossfit training, and preparing for his first triathlon.

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Barry Callahan

Barry Callahan

Barry Callahan
Chief Technology Officer

Barry Callahan, our Chief Technology Officer, has been with RJL Systems since 2000.  Barry holds a Bachelor’s Degree in Computer Science from the Missouri University of Science & Technology (UMR), and has expertise in information technology and FDA regulation guidelines.

His favorite aspect of working at RJL is the exploration of new technology, and helping to translate and integrate legal, engineering, and customer application issues. Barry is an integral part of daily operations, helping RJL broaden its product lines and expand into new markets.

Barry lives in the metro Detroit area with his wife and two children. In his free time, he enjoys reading, karate, and video games.

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Joshua Myers

Joshua Myers

Joshua Myers
Engineering Technician 

Joshua Myers has been an Engineering Technician with RJL Systems since 2003. His relentless pursuit of knowledge in programming, electronics, and machining fits well with the exciting new projects and challenges that keep RJL Systems on the forefront of technology. His wide knowledge base and proficiency in these areas helps RJL offer superb troubleshooting and customer service.

A couple of his favorite endeavors with RJL include the creation of Quantum IV, and our migration from Through-hole to Surface-mount technology.

Joshua is a Certified Electronics Technician, and he enjoys hiking and camping in the great outdoors in his free time.

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Paul Maletz

Paul Maletz

Paul Maletz
Production Manager

Our Production Manager, Paul Maletz, has been with RJL Systems since 1988. His coursework and expertise in electronic technology and machine tooling enhance his ability to provide excellent customer service for our clients in both corporate and private settings.  Paul’s favorite aspect of RJL Systems is the variety of activities each day, and the pursuit of continued improvements and success.

Paul and his wife, Lynn and their two children live in metro Detroit. Paul is an Eagle Scout, and actively participates in his childrens’ activities. He also enjoys fantasy football and playing golf.

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Jeff Polly

Jeff Polly

Jeff Polly
Operations Manager

Jeff Polly joined the staff of RJL Systems in 2007. As Operations Manager, Jeff oversees all accounting, shipping and receiving, and office management responsibilities.

Jeff has a Bachelors Degree in Finance, and his favorite aspect of working for RJL is its strong commitment to continuously improve our technology and its applications.

Jeff lives with his wife and four children in the metro Detroit area. In his free time, Jeff enjoys coaching and playing sports, trade shows, traveling, and going to the movies.

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