Jeff earned his Bachelor of Science of Architectural Studies from the University of Illinois. As a licensed architect, he is part owner of Ollmann Ernest Martin Architects in Belvidere.
He serves on the board of directors for the Belvidere YMCA, is a member of the Belvidere IOU Club and is involved with the District 100 Foundation. He joined the Boone County Community Foundation in 2016. He is also an active member of Zion Lutheran Church, where he is a council member and past council president.