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key personnel

JSA is unique in that all technical staff employees have long service with the firm; the current average for engineers and designers is over 10 years of full time employment. This extensive professional experience working together contributes substantially to the high quality of service we provide.

Principals and Associates

F.E. "Skip" Spellman, PE LEED AP BD+C
President

J. Greg Luther, PE LEED AP BD+C
Vice President

Tim North, PE LEED AP BD+C
Treasurer

Thom Wille, PE LEED AP BD+C

Mike Wernz, PE LEED AP BD+C

Mark Rood, PE LEED AP 

John D. Royds, PE