Greg Grimmer Sr.

Founder

Mark Grimmer

President & CFO

John Dudlicek

Vice President & COO

Oscar Coronado

Superintendent

Sean Davidson

Project Manager/Estimator

Max Drinski

Mechanic

Michael Tiller

Project Manager

Jackson Saliwonczyk

Project Manager

Dan Blount

Project Manager / Building Division

Tim Simko

Superintendent / Building Division

John Grimmer

Equipment Manager

Luke Haan

Superintendent

Dan Harrington

Project Manager/Estimator

Margie Hofmann

VP & Secretary/Treasurer

Brent  Jeffries

Superintendent

Rylee Kuiken

Assistant Controller

Eric Mersino

Safety Manager

Bruce Miles

Superintendent

Sam  Seegers

General Superintendent

Karen Tiller

CFO

Colin  Vance

Project Manager/Estimator