Water & Wastewater Engineer Intern (E.I.)

Company: JEO Consulting Group
Location: South Sioux City
Posted on: February 13, 2026

Job Description:

Job Description Job Description Company Overview JEO is not your typical engineering firm. We have a welcoming, fun, and laid-back culture that encourages communication and collaboration where our greatest strength is our team members. If you value great work-life integration and work best in a relaxed, supportive, and inclusive environment, we may be the place where you ARE the best version of yourself. We are a relationship-based company that prioritizes building people and providing opportunities. With a rich history and commitment to excellence, JEO has been serving clients since 1937. We are a leading multidisciplinary firm working hard to improve the communities in which we live, work and play. Join us at JEO and become part of our team that blends expertise, fun and passion for serving each other and our communities. Together, we can make a difference while building a rewarding career! Job Summary We are seeking a Water and Wastewater Engineer Intern (EI) to join our Water and Wastewater Department. This position offers the opportunity to support the planning, design, and delivery of municipal water and wastewater infrastructure projects while working under the guidance of experienced engineers. The ideal candidate is a motivated, detail-oriented professional with an interest in municipal engineering and a desire to grow toward a Professional Engineer licensure. The Water and Wastewater Department provides expertise and services in community water, wastewater and storm water systems. Project types include but are not limited to water main improvements, wells, water towers, water treatment facilities, wastewater lift stations, sewer mains, and wastewater treatment facilities. Responsibilities and Duties Assist Project Managers and Project Engineers in the planning, design and delivery of municipal water and wastewater projects. Support coordination with municipal clients to understand project needs and contribute to successful project outcomes. Assist with the preparation of engineering plans, specifications, cost estimates, and contract documents. Perform water and wastewater engineering design tasks under the supervision of a licensed Professional Engineer. Assist with engineering calculations, quantity takeoffs, and preparation of technical memoranda and reports. Ensure completeness, accuracy, and organization of design-related forms, calculations and documentation. Coordinate with internal project team members and assist with interdisciplinary collaboration. Support construction phase services, including review of shop drawings, submittals, and responses to contractor questions, as appropriate for experience level. Qualifications and Skills Bachelor’s degree in civil engineering or related engineering discipline Engineer Intern Certification 0-4 years of relevant engineering experience, including internships or co-op experience Proficiency with Microsoft Office Applications Preferred Qualifications Prior experience or internship exposure to municipal water, wastewater or stormwater projects. Experience with AutoCAD, Civil 3D or similar design software With offices throughout the Midwest, JEO is proud to offer a robust benefits package designed to support and protect our employees and their loved ones. In turn, we trust these benefits and rewards will amplify the pride and satisfaction you feel as an integral part of JEO. A few of the highlights include competitive salaries, insurance options, vacation/sick/flex time, 401K matching, wellness incentives, comprehensive career development support, an annual bonus program, participation in our Employee Stock Ownership Plan (ESOP) and much more aimed at enriching your experience with us. EOE/AA/E-Verify Powered by JazzHR pmPGVQVmkY

Keywords: JEO Consulting Group, Sioux Falls , Water & Wastewater Engineer Intern (E.I.), Engineering , South Sioux City, South Dakota