Entry-Level Wastewater Process Mechanical Engineer

carollo· Engineering
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📍 Seattle, WA, USFULL TIME

About this role

Overview

Carollo Engineers, Inc., is an internationally recognized environmental engineering firm that specializes in the planning, design, and construction of water and wastewater facilities. Our vision is to become the best water consulting firm and we are looking for motivated, talented people to help us reach that goal.

 

We are seeking an entry level process mechanical wastewater engineer to support Carollo’s vision. As part of our team, you will work on projects related to municipal wastewater treatment plants, which may include treatment plant studies, expansions, and critical projects to help maintain a safe, sustainable and resilient environment for our community.  

Responsibilities

  • Performing engineering work in wastewater treatment facilities
  • Wastewater process modeling and statistical data analysis
  • Development of alternative analysis for design options
  • Work on engineering planning and design projects
  • Prepare reports and make client presentations
  • Develop plans and specifications
  • Prepare cost estimates for various wastewater projects
  • Prepare technical memoranda and reports

Qualifications

  • Master’s or PhD in Civil or Environmental Engineering
  • Strong verbal and written communication skills
  • Work well in a team environment
  • Has the ability to communicate effectively with peers and mentors
  • Minimum academic requirements include coursework in physical and biological wastewater treatment processes, wastewater treatment plant design, statistics and hydraulics
  • Application of engineering principles including critical thinking, analysis, and innovative techniques
  • 0 to 4 years of using commercial software to conduct biological modelling and/or process mechanical design related to wastewater treatment

Preferred Qualifications

  • PhD in Civil or Environmental Engineering with experience in designing experiments
  • Wastewater modeling using BioWin, GPSX and/or Sumo
  • EIT/FE certificate
  • Internship experience within consulting engineering

Compensation Range

$80,000 to $100,000 annually. 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.

Other Compensation and Benefits

Carollo is committed to providing employees with a competitive, comprehensive benefits program that provides the support employees and their families need to lead healthy, productive lives. Carollo’s benefits package includes paid time off and holidays, comprehensive health insurance coverage, pre-tax savings account options for healthcare, dependent care and commuter expenses, disability insurance and life insurance options for you and your dependents. We also offer free Caregiver Support, Travel Assistance, counseling services, discount programs, and a Lifestyle Reimbursement Account. Other compensation that may be available includes: 401(k) company contribution matching, tuition reimbursement, discretionary bonuses, career advancement bonuses, professional registration bonuses, employee referral bonuses, and compensatory time for exempt employees. Flexible work arrangements may also be available.  Eligibility for benefits varies based on employment status.

 

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Frequently Asked Questions

Is the salary disclosed for the Entry-Level Wastewater Process Mechanical Engineer position at carollo?
The salary for this Entry-Level Wastewater Process Mechanical Engineer role at carollo is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Entry-Level Wastewater Process Mechanical Engineer position at carollo located?
This Entry-Level Wastewater Process Mechanical Engineer role at carollo is based in Seattle, WA, US. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Entry-Level Wastewater Process Mechanical Engineer role at carollo full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Entry-Level Wastewater Process Mechanical Engineer role in the Engineering department at carollo.
Which team or department does the Entry-Level Wastewater Process Mechanical Engineer at carollo belong to?
This Entry-Level Wastewater Process Mechanical Engineer position is part of the Engineering department at carollo. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Entry-Level Wastewater Process Mechanical Engineer position at carollo?
Click the "Apply Now" button on this page. You will be redirected to carollo's official application portal hosted on icims where you can submit your application directly.
When was the Entry-Level Wastewater Process Mechanical Engineer job at carollo posted?
This Entry-Level Wastewater Process Mechanical Engineer position at carollo was posted on May 11, 2026. Apply as soon as possible — early applications are often reviewed first.
Entry-Level Wastewater Process Mechanical Engineer
carollo
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