McMahon: Alex Klarner, Ranae Nider, Zach Peirce, Alrik Ristau, Kirsten Smith and Jacob Thompson join McMahon

NEENAH, Wis. (July 12, 2022) – McMahon, a full-service, professional engineering and architectural firm, has hired Alex Klarner and Renae Nider as structural designers, Zach Peirce as a mechanical design engineer, Alrik Ristau as a water and wastewater operations specialist, Kirsten Smith as an electrical designer and Jacob Thompson as a municipal and civil engineering technician.

Klarner is a recent graduate of Northeast Wisconsin Technical College where he earned an associate degree in architectural technology. Prior to McMahon he worked for a construction company.

Nider comes to McMahon after working in residential design for a building material supply company. She earned an architectural technology degree from Northeast Wisconsin Technical College in 2022 and has previous degrees in interior design and kitchen and bath design from Fox Valley Technical College.

Peirce is a new graduate of Michigan Tech where he earned his bachelor’s degree in mechanical engineering. His role at McMahon will be focusing on plumbing and HVAC engineering. Peirce held two internships for a defense company before joining McMahon.

Ristau has a bachelor’s degree in environmental engineering from the University of Wisconsin-Oshkosh. He has experience operating and managing anaerobic digesters. Ristau will be joining McMahon’s affiliate company, Integrated Public Resources.

Smith graduated from Northeast Wisconsin Technical College with an associate degree in architectural technology in 2022. She was a McMahon intern while pursuing her degree and began her electrical designer role full-time after graduation.

Thompson graduated from University of Wisconsin-Oshkosh with a bachelor’s degree in environmental science. Thompson previously worked for Vilas County, Wisconsin removing invasive species from lakes.

To learn more about McMahon’s projects and open positions, visit

Headshots Included.

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Alex Klarnerstructural designer for McMahon

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Renae Nider, structural designer for McMahon

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Zach Peirce, mechanical design engineer for McMahon

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Alrik Ristau, water and wastewater operations specialist for McMahon

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Kirsten Smith, electrical designer for McMahon

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Jacob Thompson, municipal and civil engineering technician for McMahon