Entry-Level Wastewater Process Mechanical Engineer
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Before you apply
Salary$80k – $100k
LocationSeattle, WA, US
Typefull-time
SeniorityEntry
ExperienceUp to 4 yrs
DepartmentEngineering
Company size501–1,000 people
PostedMay 11, 2026 · 6mo ago
Verified live1d ago
May no longer be actively hiring
Posted by the company on May 11, 202643% of this company's open roles have been listed for 90+ days
At a glanceSummarised by Seekless from the posting.
Master's or PhD in Civil or Environmental Engineering
Strong verbal and written communication skills
Work well in a team environment
Ability to communicate effectively with peers and mentors
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
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
Skills
BioWin
GPSX
Sumo
Benefits
Paid time off
Holidays
Health insurance
Pre tax savings accounts
Disability insurance
Life insurance
Caregiver support
Travel assistance
Counseling services
Discount programs
Lifestyle reimbursement account
401(k) matching
Tuition reimbursement
Discretionary bonuses
Career advancement bonuses
Professional registration bonuses
Employee referral bonuses
Compensatory time
Flexible work arrangements
Overview
About the company
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
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Develop plans and specifications
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Prepare cost estimates for various wastewater projects
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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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