Water Resources Intern

Do you want to build an impactful career to change the world for the better?

Geosyntec has an exciting opportunity for a Water Resources Intern in our Oak Brook, IL or Lakewood, CO, office. The position offers the opportunity to apply engineering (civil, environmental, and water resources) academic knowledge to real-world situations while also learning the business skills needed for a successful consulting career. The position is full-time (40 hours/week) for approximately 13 to 15 weeks during the summer of 2026.

Preferred candidates would have the ability to return to the position for up to two additional semester rotations during their undergraduate or graduate studies. Candidates are responsible for coordinating their own transportation to and from the office.

Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well-being programs to support you and your family.

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• Collaboration with interdisciplinary teams of colleagues, clients, and stakeholders on a wide variety of water resource projects;
• Hydrologic and pollutant load modeling of watersheds and stormwater infrastructure;
• Hydrology and hydraulics [engineering calculations and modeling] of open channels and stream systems, including floodplain modeling;
• Stormwater calculations and design
• Assistance for permitting and regulatory compliance;
• Technical writing of reports, letters, memoranda, plans, specifications, and proposals;
• Data input and analysis, including preparing maps, tables, and figures;
• Statistical data assessments and data visualization; and
• Drive personal, company, and rental vehicles to client or company project or office sites, and other business locations, as needed.

• Currently registered in a Bachelor’s, Master’s or Ph.D. university degree program in a relevant engineering discipline. (required)
• Degree focus area in environmental or water resources engineering. (preferred)

• Experience with data assessments using software such as Microsoft Excel or programming languages such as R or Python. (required)
• Experience with Arc GIS. (preferred)
• Outstanding academic credentials and exceptional interpersonal, technical writing, and problem-solving skills. (required)
• Experience with relevant modeling software including EPA-SWMM and HEC-HMS. (preferred)
• Ability and willingness to perform fieldwork and travel. (required)
• Valid U.S. driver’s license, reliable transportation, and satisfactory driving record to drive to project sites. (preferred)

This opportunity will be posted for at least five days. Below are the potential compensation ranges that we in good faith believe are applicable for this role at the time of this posting and are only applicable for jobs to be performed in the specified location(s) below. The typical base salary range for this position is just one component of Geosyntec’s total compensation package for employees.

Actual compensation will be determined based on education, experience, skill set and location.

• Minimum: $21.93/hour / Maximum: $30.71/hour (Oak Brook, IL, Lakewood, CO

We offer a comprehensive benefits package including, paid holidays, vacation, sick, and personal paid time off, medical, dental, vision, life, and disability insurance, 401(k), and other benefits to eligible employees.