With years of professional engineering experience in building design, building component engineering mechanics, and building science, the team at DrJ Engineering is ready to serve you. Since 2011, DrJ Engineering has provided professionally engineered solutions in 49 states across the U.S. 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
Matt Barrett
Engineering Intern
608-310-6718
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Lindsay Braxler
Administrative Support & Billing Specialist
608-310-6730
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Ryan Dexter, P.E.
VP of Engineering
608-310-6744
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Stefan Donica, E.I.T.
Staff Engineer
608-310-6701
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John Fredrick
Staff Engineer
608-310-6734
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Calvin Hamblet, E.I.
Staff Engineer
608-310-6711
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Blain Harpstrite
Staff Engineer
608-310-6726
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Dan Hawk, P.E.
Director of Engineering
608-310-6704
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Ellen Henderson, P.E.
Staff Engineer
608-310-6705
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Eric Helmueller, P.E.
Staff Engineer
608-310-6743
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Sam Muer, E.I.T.
Staff Engineer
608-310-6771
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Evie Reinke
Customer Support Manager
608-310-6721
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Jim Vogt, P.E.
VP of Engineering
608-310-6703
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Justin Wainright
Drafting Technician
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Larry Wainright
VP of Product Certification
608-310-6742
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Jake Zylka, P.E.
Staff Engineer
608-310-6735
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