About the role#
HDR is seeking a Water/Wastewater Intern to join our team in Walnut Creek, California. This is an on-site, paid internship that offers real-world experience on projects related to water management, infrastructure, and environmental sustainability. You will work alongside our staff to support public health and environmental efforts.
What you'll do#
- Gain practical experience by assisting on various projects.
- Engage with recent college graduates and company leadership through our mentoring and young professionals programs.
- Complete other tasks as needed to support the team.
What you'll need#
- Current enrollment in an undergraduate or graduate program for Environmental Engineering, Biology, or a related field.
- Strong communication and problem-solving skills.
- Attention to detail.
- Basic proficiency in Microsoft Office.
- Ability to actively participate in our employee-owned culture.
- Preferred: At least two years of degree progress completed with a 3.0 or higher GPA.
- Preferred: Familiarity with software packages relevant to your field of study.
Location & details#
- Location: Walnut Creek, California.
- Modality: On-site.
- Term: Rolling.
- Status: Full-time.
About HDR
HDR is an employee-owned design firm that provides engineering, architecture, environmental, and construction services. The company operates globally across sectors including healthcare, transportation, energy, and water resources. Headquartered in Omaha, Nebraska, it employs over 17,000 people. It maintains a large network of offices to support its diverse project portfolio.
How to get in at HDR
Applying early to HDR is a distinct advantage because recruiters often review candidates as they arrive. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you can apply among the first before the pile grows. Reaching the right person at a firm this size can be difficult, but it is often the most effective way to get noticed. Intern Insider surfaces the recruiters behind the company roles so you can reach out directly to ask about the position or a referral, which materially improves response rates.



