Water & Wastewater Intern

Take Your Design Career to the Next Level  

Are you ready to be challenged, make a difference, and experience professional growth in your career? Kleinfelder's Design team is looking for you! From bridge and structural engineering to civil, electrical, mechanical, and process engineering, Kleinfelder's collaborative Design Services create synergy across multiple disciplines.  

Step into Your New Role 

Kleinfelder is seeking a highly motivated Engineering Intern for the Spring/Summer 2026 to work in our lively office environment.  The Hamilton and Princeton office have a particular strength in water/wastewater engineering, water quality modeling, watershed and stormwater management.  We routinely provide strategic planning, regulatory compliance support, and engineering services to a wide variety of public and private sector clients. The successful student candidate will be able to follow proper procedures, perform accurate computations, and build strong working relationships with coworkers.

This position is available in our Hamilton, NJ or Princeton, NJ office.

Responsibilities:

Under the direction of the Project Manager and/or Project Engineer, specific expectations will include:

• Complete calculations and analyses related to the hydraulic and process design of water and wastewater infrastructure.
• Complete field work at water/wastewater treatment plants and collect water samples in streams/rivers.
• Conduct environmental field investigations and gather data.
• Work collaboratively and provide accurate data to a team as part of a hands-on learning experience.

As a Kleinfelder Intern, you will focus on learning how our organization runs and can expect to gain valuable insight that can further your interest within your chosen career field. You will also have an opportunity to meet with several department managers and learn more about the ins-and-outs of our firm's procedures and operations. 

Qualifications:

• Pursuing a Bachelor of Science or Master of Science in Civil or Environmental Engineering.
• Strong verbal and written communication skills, with solid written and verbal fluency in English.
• Proficiency in Microsoft Word and Excel.
• Willingness to complete site visits to water/wastewater treatment plants and collect water samples in streams/rivers.
• Knowledge of ArcGIS, AutoCAD and MS Office is a plus.
• Interest in learning about water and wastewater treatment process modeling and engineering; interest in learning about watershed management and water quality modeling in waterways.

Move Forward with Kleinfelder:

Kleinfelder and its’ subsidiaries and affiliates, has been connecting great people to the best work since 1961. We are engineers, scientists, and construction professionals providing solutions that improve our clients’ transportation, water, energy, and other private infrastructure. As a responsive, cross-disciplinary team of bright, curious, and innovative problem-solvers, we are dedicated to doing the right thing, every day, on every project from over 110 offices in the US, Canada, and Australia. Connecting great people to the best work is our purpose – together, we deliver.

Progress with an Employer that Values You

Kleinfelder, and its’ subsidiaries and affiliates, is an inclusive organization free from discrimination. We are a stronger organization when we are a diverse workforce and believe that through diversity, equity, and inclusion comes creativity, innovation, and unity. We are proud to offer the following:

Equal Opportunity: Kleinfelder is an Equal Opportunity Employer - Minorities/Women/Disabled/Veterans. (Compliant with the new VEVRAA and Section 503 rules)

NOTICE TO THIRD PARTY AGENCIES 

Please note that Kleinfelder does not accept unsolicited resumes from recruiters or employment agencies. In the absence of a signed Recruitment Fee Agreement, Kleinfelder will not consider or agree to payment for any referral compensation or recruiter fee. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement, Kleinfelder explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency. Any unsolicited resume, including those submitted to hiring managers, are deemed to be the property of Kleinfelder.