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Urgent! Civil/Environmental Engineering Intern - Summer 2026 Job Opening In – Now Hiring Carollo Engineers

Civil/Environmental Engineering Intern Summer 2026



Job description

**Overview**

Carollo Engineers is an internationally recognized environmental engineering firm that specializes in the planning, design, and construction of water and wastewater facilities.

We are seeking a Civil/Environmental Engineering Intern in our Oklahoma City, OK office to support our vision of becoming the best water consulting firm.

As part of our team, you will work on projects related to municipal water and waste plants/infrastructure, including but not limited to, major treatment plant expansions, infrastructure upgrades, regional water quality studies, and critical water reuse projects that will create sustainable and resilient water supplies for the world.

At Carollo you’ll make an impact at an organization that does meaningful work, fosters a collaborative team culture, and creates a diverse, inclusive environment where you feel like you belong.

You’ll work alongside a collaborative and dynamic team of professionals that is truly passionate about our work.

Carollo’s vision is to be the BEST water consulting firm and you’ll find that Carollo is also the best place for you to build your career.

This internship will be for Summer 2026.

**Responsibilities**

+ Perform engineering work in various engineering fields (water and wastewater treatment, and engineering services during construction)
+ Work on engineering designs
+ Assist preparing reports
+ Develop plans and specifications, and cost estimates for various projects
+ Check submittals for performance or conformity with plans and specifications
+ Assist with the preparation of technical memoranda, reports and electronic deliverables
+ Data entry and analysis
+ Participate in field activities such as site investigations, and pilot testing

**Qualifications**

+ High School Diploma or equivalent
+ Finishing or completed junior year of college
+ Currently pursuing a Bachelor’s or Master’s Degree in Civil or Environmental Engineering field
+ Strong verbal and written communication skills
+ Proficient in Microsoft Word and Excel

**Preferred Qualifications**

+ Experience and/or coursework in water/wastewater treatment and conveyance
+ Previous related internship experience a plus, but not required
+ Passed or scheduled for the FE/EIT exam
+ Experience using CAD software (AutoCAD, Microstation, Revit, Sketch Up)

**Need help finding the right job?**

We can recommend jobs specifically for you!EOE including disability/veteran (https://careers-carollo.icims.com/connect?back=intro&findajob=1&in_iframe=1&hashed=-626002157)

**Job Locations** _US-OK_
**ID** _2025-4109_

**Category** _Engineering_

**Type** _Part-time, Temporary_


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