J.F. Ahern

About J.F. Ahern

Beginning as a small steam heat and plumbing shop in 1880, Ahern has since become one of the largest, most respected specialty contractors in the nation - with multi-trade expertise in mechanical contracting, fire protection and pipe fabrication.
Whether a partner on new construction/retrofit projects, servicing existing facilities, or providing prefabricated piping; Ahern consistently reduces our clients’ risk for projects and service requests of all sizes. With approximately 1,400 employees specializing in pipe fabrication, mechanical, and fire protection contracting, we offer measurable expertise and experience.

If you want to join a company that values trust, integrity and commitment - then Ahern is the company that you need.


Fire Protection Design Intern

June 2022 - August 2022 Fond du Lac, WI
“I really liked working for this company and showing up to work everyday. The company's attitude towards its employees was nothing short of excellent all the way down to the field employees and interns. Fire protection design is a very niche industry, but still did work more than busy work or paper pushing.”

Supply Chain Intern

May 2021 Fond du Lac, WI
“very hands on experience, treated like an entry level employee ”
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