Water/Wastewater Engineering Intern

Carollo

Seattle, WA Posted October 26, 2026

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On-site Temporary Entry level
Job Description

We are seeking a water / wastewater engineering intern to support Carollo’s vision. As part of our team, you will work on projects related to municipal water and wastewater treatment plants, including but not limited to major treatment plant expansions, studies, and critical projects to help create sustainable and resilient environment for our community.

Responsibilities include: - Performing engineering work in water / wastewater treatment and conveyance infrastructure.- Work on engineering planning and design projects.- Prepare reports.- Develop plans and specifications.- Prepare cost estimates for various projects.- Hydraulic system modeling.- Development of alternative analysis of design options.- Preparation of technical memoranda, reports and electronic...

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