Senior​/Principal Engineer - Wastewater Collection System Planning

SENIOR / PRINCIPAL ENGINEER - WASTEWATER COLLECTION SYSTEM PLANNING

Join to apply for the SENIOR / PRINCIPAL ENGINEER - WASTEWATER COLLECTION SYSTEM PLANNING role at West Yost
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We are a water-focused engineering consulting firm, certified as a Great Place to Work® based on feedback from our community of over 250 team members. We ranked top three in the AEC Advisors 2021 and 2022 Diversity Index Top Firms and were recognized as one of Fortune’s® Best Workplaces in Consulting and Professional Services in 2023 and 2024. Since 1990, our mission has been to be the water firm of choice for both our clients and our team.

Over the years we have built upon that mission and now integrate a host of high-quality services in groundwater, water supply, water and wastewater treatment, water and wastewater infrastructure, stormwater, recycled water, construction management, and operations technology from our multiple locations in the west. As a team, we work with our clients to understand their true needs. Our long‑term relationships are based on integrity, partnership, and high‑value solutions.

In 2025 and beyond, West Yost is advancing water resources for future generations and living our core values every day.

Compensation range: $101,325 to $180,915 based on our Davis, CA office location. The position may be located at any of our CA or OR office locations.

• Serve as a technical leader in wastewater collection system hydraulic evaluations using commercial hydraulic modeling software (e.g., Infoworks ICM, Aqua Twin Sewer, Sewer Gems).
• Work on projects across California and Oregon.
• Analyze flow, demand, population, water quality, and facility condition data.
• Assess collection system regulatory compliance.
• Develop wastewater collection system capital improvement programs.
• Prepare technical reports and master plans.
• Train and mentor staff on wastewater collection evaluation.
• Serve as project manager directing hydraulic modeling and master planning work of senior level and other staff engineers.
• Provide QA/QC review of work by the wastewater collection system planning team.
• Interact directly with clients and provide excellent client service.
• Assist with marketing activities and proposal development when needed.

• 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 (licensure in other states in which the firm practices may also be considered).

• 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 with appropriate grammar, punctuation, and spelling for concise reader‑friendliness.
• Experience with direct client interaction and proposal writing.
• High proficiency with Info Water PRO; experience with Aquanuity software.
• Commitment to maintaining professional competency through continuing education and professional society meetings.
• Willingness to travel out of office and on evenings/overnight assignments.

• May require travel to other offices and/or client offices.

We provide a comprehensive benefits package including medical, dental, vision, flexible spending accounts, health savings accounts, paid vacation, paid sick leave, holidays, employee assistance programs, travel assistance, 401(k) profit sharing with employer match, additional paid time off, parental leave, life and AD&D insurance, short‑term and long‑term disability insurance, and pet insurance.