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Senior - Principal Engineer - Wastewater Collection System Planning

Job in Lake Oswego, Clackamas County, Oregon, 97034, USA
Listing for: West Yost
Full Time position
Listed on 2026-05-18
Job specializations:
  • Engineering
    Environmental Engineer
Salary/Wage Range or Industry Benchmark: 101325 - 180915 USD Yearly USD 101325.00 180915.00 YEAR
Job Description & How to Apply Below

Senior - Principal Engineer – Wastewater Collection System Planning

Compensation range: $101,325 to $180,915 (based on Davis, CA location).

Location:

CA or OR offices (any). Hybrid role with 3 days in office and 2 days remote.

Key Responsibilities & Functions
  • Serving as a technical leader in wastewater collection system hydraulic evaluations utilizing a variety of commercial hydraulic modeling software programs (e.g., Infoworks ICM, Aqua Twin Sewer, Sewer Gems, etc.).
  • Working as part of a team on projects throughout California and Oregon.
  • Analyzing various types of flow, demand, population, water quality, and facilities condition data.
  • Assessing collection system regulatory compliance.
  • Developing wastewater collection system capital improvement programs.
  • Preparing technical reports and master plans.
  • Training and mentoring staff on wastewater collection evaluation and assessments.
  • Serving as a project manager directing the hydraulic modeling and master planning work of senior level, as well as other staff engineers.
  • Providing QA/QC review on the work of others in the wastewater collection system planning team.
  • Interacting directly with clients and providing excellent client service.
  • Assisting with marketing activities and proposal development when needed.
Required Qualifications
  • Bachelor’s degree in Civil/Environmental Engineering.
  • 8+ years of experience with Wastewater Collection System Planning and Hydraulic Modeling.
  • Excellent verbal and written communication skills.
  • Experience with CAD, GIS, Microsoft Access, and hydraulic modeling software (e.g., Info Water Pro).
  • PE licensure in the State of California (PE licensure in other states also considered).
Preferred Qualifications
  • Master’s degree in Civil/Environmental Engineering.
  • Proven ability to manage multiple priorities and deadlines.
  • Ability to process accurate engineering calculations unaided and prepare reports.
  • Proven ability to summarize technical information using appropriate grammar, punctuation and spelling for concise reader-friendliness and clarity.
  • Experience with direct client interaction and proposal writing.
  • High proficiency with Info Water PRO; experience with Aquanuity software.
  • Maintaining professional competency may require attending education classes and seminars, reading professional publications, and attending professional society meetings.
  • May require out-of-office travel with occasional evening and overnight assignments.
Travel Requirements

This position may require travel to other offices and/or client offices.

Standard Benefits
  • Medical, dental, vision
  • Flexible spending accounts
  • Health savings accounts (with West Yost contribution)
  • Paid vacation
  • Paid sick leave and holidays
  • Two employee assistance programs
  • Travel assistance program
  • 401(k) profit sharing with employer match
  • Leaves of absence with additional supplemental paid time off
  • Parental leave
  • Life and AD&D insurance
  • Short-term and long-term disability insurance
  • Pet insurance
Other Unique Benefits
  • 529 college savings plan/student loan repayment program
  • Tuition reimbursement
  • Paid professional memberships
  • Paid training
  • Leadership Academy programs
  • Milestone anniversary benefits
  • Peer-to-peer recognition programs
  • Employee stock ownership
  • Annual monetary and paid time off bonuses
  • Performance-based bonus eligibility
  • Merit increase eligibility
  • Employee referral bonuses
  • Wellness reimbursement
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Position Requirements
10+ Years work experience
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