Member, Precinct Committee, present

Mayor, West Chicago, present

Member, Winfield Township Republicanism Committee, present

Representative, Illinois State House of Representatives, District 49, 2007-2019

Secretary, Winfield Township Republican Party, 1998-2002

Alderman, First Ward, West Chicago, 1994-2001

Former Member, Appropriations for Higher Education Committee, Illinois State House of Representatives

Former Ranking Minority Member, Biotechnology Committee, Illinois State House of Representatives

Former Ranking Minority Member, Cities and Villages Committee, Illinois State House of Representatives

Former Ranking Minority Member, Cybersecurity, Data Analytics & IT Committee, Illinois State House of Representatives

Former Ranking Minority Member, Economic Opportunity Committee, Illinois State House of Representatives

Former Ranking Minority Member, Elections & Campaign Finance Committee, Illinois State House of Representatives

Former Member, Energy Committee, Illinois State House of Representatives

Former Member, Environmental Health Committee, Illinois State House of Representatives

Former Member, Health Care Licenses Committee, Illinois State House of Representatives

Former Ranking Minority Member, Intermodal Infrastructure Committee, Illinois State House of Representatives

Former Member, Labor and Commerce Committee, Illinois State House of Representatives

Former Member, Public Utilities Committee, Illinois State House of Representatives

Former Member, Railroad and Air Subcommittee, Illinois State House of Representatives

Former Ranking Minority Member, Redistricting Committee, Illinois State House of Representatives

Former Member, Renewable Energy and Sustainability Committee, Illinois State House of Representatives

Co-Chair, STAR Line Commuter Rail Task Force

Former Member, Subcommittee on Ballot Access, Illinois State House of Representatives

Former Member, Subcommittee on Local Government, Illinois State House of Representatives

Former Ranking Minority Member, Subcommittee on Tollway Oversight Review, Illinois State House of Representatives

Former Ranking Minority Member, Tollway Oversight Committee, Illinois State House of Representatives

Former Member, Transportation Committee, Illinois State House of Representatives

Former Ranking Minority Member, Transportation, Regulation, and Roads Committee, Illinois State House of Representatives

Alternate Delegate, Council of Mayors, Chicago Area Transportation Study, 2005

Member, West Chicago Plan Commission, 1991-1994

Member, Historic Preservation Commission, West Chicago, 1990-1993

Professor, Northern Illinois University, 1993-present

Researcher, Fermilab National Laboratory, 1987-present

Board Member, West Chicago Elementary School District 33, District 33, 1994

Member, First Congregational Church of West Chicago, present

Trustee, Foundation for Educational Excellence, present

Instructor, Tae Kwon Do, present

Director, Transportation Policy, DuPage Mayors and Managers Conference, present

Treasurer, West Chicago Lions Club, present

Member, Education Reform Task Force, Metropolitan Mayors' Caucus

Co-Chair, Illinois Articulation Initiative Physics Panel, present

Charter Member, Metro West Council of Governments, 2005