About Us

Group of engineering staff

DrJ Engineering (DrJ) has professional engineering roots. With more than 100 years combined professional engineering experience in the building design, building component engineering mechanics and building science market segments, DrJ’s team provides professionally engineered solutions in 49 states across the U.S since 2011. Additionally, through our partners, we are able to provide engineered solutions in all 50 states, Canada and Puerto Rico.

DrJ uses its testing, building design and installation experience to help innovation flourish. DrJ's goal is to work alongside innovative companies to bring existing and new products, processes and services to the market professionally, reliably and cost effectively through our unique certification services and generally accepted engineering practice.

Our Staff

Lindsay Braxler
Administrative Support & Billing Specialist
608-310-6730
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Jessie Clark, E.I.T.
Mechanical Engineer & Technical Writer
608-310-6704
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Ryan Dexter, P.E.
VP of Engineering
608-310-6744
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Stefan Donica, E.I.T.
Research Engineer
608-310-6701
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Michael Fehling, E.I.T.
Research Engineer
608-310-6720
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Anastasia Feraco
Materials Engineer & Technical Writer
608-310-6711
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John Fredrick

John Fredrick
Research Engineer
608-310-6734
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Kye Hanson, E.I.T.
Research Engineer
608-310-6752
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Ellen Henderson, P.E.
Project Manager
608-310-6705
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Kara Meverden
Customer Support Manager
608-310-6707
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Joe Michels, P.E.
Staff Engineer
608-310-6713
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Sam Muer, E.I.T.
Staff Engineer
608-310-6771
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Kevin Muich, P.E.
Staff Engineer
608-310-6733
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Angie Protexter
Sales Manager
608-310-6743
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Evie Reinke
Customer Support Manager
608-310-6721
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Don Scherrer, E.I.T.
Staff Engineer
608-310-6726
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Jim Vogt, P.E.
VP of Engineering
608-310-6703
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Larry Wainright
VP of Technical Services
608-310-6742
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Denise Williamson
Project Coordinator & Sales Support
608-310-6739
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Jake Zylka, P.E.
Staff Engineer
608-310-6735
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Want to Join Our Team?

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Career Opportunities