While DrJ staff members boast a variety of specialties, experiences, and interests, they share a common passion for innovative engineering, high quality building design, building code expertise, and outstanding customer service. Get to know our team – they look forward to getting to know you!
Matt Barrett
Staff Engineer
608-310-6718
Contact Matt
Will Bowman*
Staff Engineer
608-310-6705
Contact Will
Lindsay Braxler*
Administrative Support & Billing Specialist
608-310-6730
Contact Lindsay
Ben Caldwell*
Web Development
608-310-6717
Contact Ben
Mindy Caldwell*
Marketing
608-310-6729
Contact Mindy
Ryan Dexter, P.E.*
VP of Engineering
608-310-6744
Contact Ryan
Stefan Donica, P.E.
Staff Engineer
608-310-6701
Contact Stefan
John Fredrick
Business Development
608-310-6734
Contact John
Kirk Grundahl, P.E.
President
608-310-6715
Contact Kirk
Calvin Hamblet, E.I.
Staff Engineer
608-310-6711
Contact Calvin
Blain Harpstrite
Staff Engineer
608-310-6726
Contact Blain
Dan Hawk, P.E.
Director of Engineering
608-310-6704
Contact Dan
Adam Heise
Engineering Technician
608-310-6702
Contact Adam
Eric Helmueller, P.E.
Staff Engineer
608-310-6743
Contact Eric
Sam Muer, E.I.T.*
Staff Engineer
608-310-6771
Contact Sam
Darren Promer*
Staff Engineer
608-310-6728
Contact Darren
Evie Reinke*
Quality System Manager
608-310-6721
Contact Evie
Briana Staszak*
Administrative & Operations Assistant
608-310-6725
Contact Briana
Jim Vogt, P.E.*
VP of Engineering
608-310-6703
Contact Jim
Justin Wainright
Drafting Technician
Contact Justin
Larry Wainright*
VP of Product Certification
608-310-6742
Contact Larry
Ashley Widmer*
Operations Assistant
608-310-6772
Contact Ashley
Mike Yee*
Staff Engineer
608-310-6752
Contact Mike
Jill Zimmerman*
Operations Management
608-310-6722
Contact Jill
Jake Zylka, P.E.
Staff Engineer
608-310-6735
Contact Jake
*Member of DrJ Certification Team