Title:  Intern - Engineering

Over 87% of our interns rate their experience with us as well above average. That's because we take care to make sure that your classroom learning is really put to use on real projects.  

In 2021, Ahern was ranked as the #1 specialty contractor in WI and in the top 15% of specialty contractors across the US. Building this first class reputation in the industry since 1880 did not happen by chance. It has developed over time through our commitment to conducting business ethically and by providing continuous learning, improvement and development opportunities for our number one asset, employees. You owe it to yourself to find out what Ahern has to offer!

We are hiring an Engineering Intern in our Fond du Lac, WI office for Summer 2025.

Ahern, one of the leading mechanical and fire protection contractors in the United States, has an exciting opportunity for an Intern to work within our Engineer team based in our Corporate office in Fond du Lac, WI.  Building a first class reputation in the industry since 1880 did not happen by chance. It has developed over time through our commitment to conducting business ethically and by providing continuous learning, improvement and development opportunities for its number one asset, employees. You owe it to yourself to find out what Ahern has to offer!        

How you will contribute:

As an Intern within the Engineering team, you will learn how to prepare detailed layouts for various HVAC projects under the mentorship of an experienced engineer.  You will observe and support a seasoned engineer in providing engineering over site of the layout of these HVAC systems, equipment selections, and layouts, provide information to our estimating team relative to the bid packages, participate in the review process for HVAC specification development, layout control strategies, and provide engineering input into the operations plans for system commissioning and start-up. Our engineering team works closely with building owners and project managers to provide energy efficiency advice and assistance on new or existing systems.  

What you need to qualify:

Intern candidates should be pursuing a Bachelor’s degree preferably in Mechanical Engineering or a related engineering program.  Must be comfortable working in MS Office programs and passionate about deepening knowledge of mechanical systems. 

What's in it for you?

Ahern offers a structured, hands on and challenging internship experience. Interns are treated like entry level full time employees. Talented, results minded Interns step to the front of the line for full time positions. 

Ahern is an Affirmative Action / Equal Opportunity Employer and encourages veterans, women, minorities, and disabled individuals to apply.