Meet the Team
John A. Zwingman, P.E. – Civil Engineer
President of Advanced Consulting Engineering Services (ACES)
Bachelors of Science Degree, Colorado School of Mines – Golden CO (1994)
Professional Engineer – Civil, Nebraska (E-9608),
County Highway Superintendent, Class A (S-1398)
City Street Superintendent, Class A (S1397)
John has over twenty years experience as project engineer and manager specializing in Municipal and Agricultural Engineering
Leanne R. Ritter, Project Designer – Drafter
Treasurer/Project Designer of Advanced Consulting Engineering Services
Associates of Applied Science & Technology, Southeast Community College, Lincoln, NE (2002)
Leanne is designer and drafter for multiple projects including earthwork, underground utility layouts, water, sanitary sewer, paving projects and agricultural feedlot design and layout as well as NDEQ permitting. Leanne also is experienced in collecting and translating topographic data, staking projects, and survey coordination.
Terry L. Schulz, Licensed Surveyor
Bachelor of Science, Industrial Technology, Wayne State College, Wayne, Nebraska (1989)
Surveyor-In-Training Certificate (1994)
State of Nebraska Board of Examiners (S.I.T. #123)
Registered Land Surveyors Certificate (1997)
State of Nebraska Board of Examiners (R.L.S. #550)
Terry has completed various staking projects, lot surveys, and section corner research, location and monumentation. He is the County Surveyor for Wayne County, Nebraska and has been a senior crew member and inspector on numerous NDOR projects.
Brent Marr, Drafter/Designer
Bachelor of Science in Construction Management, University of Nebraska, Lincoln, NE (2005)
Brent brings over 10 years of experience to Advanced Consulting Engineering Services and is responsible for managing project developments, budgets, and schedules.
Brent Hegemann, Project Observer
Associates of Applied Science, Surveying, Southeast Community College, Milford, NE (2010)
Brent has over 5 years of professional surveying experience. He has overseen multiple projects for Advanced Consulting Engineering Services and ensures projects are completed according to plans and specifications.
Jen L. Kreikemeier, E.I.T., Office Manager
Bachelor of Science, Civil Engineering, University of Nebraska, Lincoln, NE (August 1999)
E.I.T. Jen has experience in traffic engineering, plan preparation and submittal. She is responsible for Survey Department coordination, monthly project status reports, and marketing.
Jeannette Rolf – Office Staff
Associate of Applied Science, Accounting, Spencer School of Business, Grand Island, NE (1991)
Jeannette is responsible for engineering contract preparation and preparing specifications for a variety of developments.