J.M. Brennan, Inc.
Jonathan Olson currently serves as an Electrical/Controls Project Manager at J.M. Brennan, Inc. since June 2023. Prior to this role, Jonathan Olson held the position of Division Manager at Grunau Company from July 2015 to June 2023. Jonathan Olson earned a Bachelor's degree in International Business from USILACS, completing studies in December 2022.
J.M. Brennan, Inc.
J.M. Brennan is a mechanical contractor dedicated to providing high performance HVAC, Building Controls, Plumbing, Process Piping, Industrial Sheet Metal, Fire Protection & Monitoring. We employ over 400 of the most highly skilled Pipe Fitters, Plumbers, Sheet Metal Workers, Sprinkler Fitters, Service Techs, and Controls Techs. We provide engineering, sustainable design, and service 24/7. Our customers include industrial, commercial, and healthcare facilities throughout Southern Wisconsin including Milwaukee and Madison.