Water/Wastewater Engineering Intern

Carollo Engineers; Seattle (WA); On-site; USD 30,000 - 40,000; Part time

Job summary

Carollo Engineers, a leading water-focused engineering firm, seeks a Water/Wastewater Engineering Intern to support municipal projects in Seattle. You will contribute to planning, design, and analyses for treatment plants and conveyance systems.

The role emphasizes strong communication, teamwork, and hands-on modeling, with opportunities to work on major expansions and critical projects across water utilities. This is a temporary internship based in US-WA-Seattle.

Qualifications

• Sophomore year or completed status in civil or environmental engineering.
• Strong verbal and written communication skills.
• Interest in water/wastewater treatment and hydraulics.
• Self-motivated with analytical thinking.
• Coursework in hydraulics, physical, chemical and biological treatment processes and plant design.

Responsibilities

• Perform engineering work in water/wastewater treatment and conveyance infrastructure.
• Work on 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 deliverables.

Skills

Self-starter

Team player

Strong communication

Effective communicator with peers/ment

Education

Sophomore year in civil/environmental engineering

Hydraulics and water/wastewater coursework

Job description

Overview

Carollo Engineers is a leading engineering firm dedicated exclusively to water. For over 90 years, we've specialized in the planning, design, and construction of water, wastewater, stormwater, and reuse facilities, bringing innovative and sustainable solutions to the water sector's most complex challenges.

We work with water agencies, municipalities, utilities, research organizations, and private companies across various industries, including technology, manufacturing, and beyond. These clients choose Carollo because we employ some of the most knowledgeable and experienced professionals in the world. When you join our team, you'll work alongside industry leaders who are advancing the science of water, protecting public health, and building resilient communities.

Carollo's vision is to be the best water consulting firm and the best place for you to build your career. If you're passionate about making a difference in this critical field, we invite you to explore a career with Carollo.

Responsibilities

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 deliverables.

Qualifications

• Highly motivated, articulate and self-starter.
• Application of engineering principles including critical thinking, analysis and innovative techniques
• Strong verbal and written communication skills.
• Work well in a team environment.
• Have the ability to communicate effectively with peers and mentors.
• Enrolled or completed sophomore year of civil or environmental engineering degree program.
• Coursework in the field of environmental engineering with an emphasis in hydraulics, physical, chemical, and biological treatment processes and treatment plant design.

Preferred Qualifications

• Experience and/or coursework in water/wastewater treatment and conveyance
• Previous related internship experience a plus, but not required
• Knowledge and experience in water chemistry and regulations.

Compensation Range

$22.00 to $29.00 per hour. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. We may ultimately pay more or less than the posted range, and the range may be modified in the future. An employee’s pay within the salary range will be based on several factors including, but limited to, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

EOE including disability/veteran (https://careers-carollo.icims.com/jobs/4682/water-wastewater-engineering-intern/job?mode=apply&apply=yes&in_iframe=1&hashed=-1834471131)

Job Locations

US-WA-Seattle

ID

2026-4682

Category

Engineering

Type

Temporary