Senior Principal Engineer – Wastewater Collection System Planning

West Yost

Senior - Principal Engineer contributing to the development of Water Business Sector at West Yost. Involved in wastewater collection system planning and hydraulic modeling in CA and OR.

Posted 7/27/2026full-timeDavis • California, Oregon • 🇺🇸 United StatesSenior💰 $101,325 - $180,915 per yearWebsite

About the role

Key responsibilities & impact

Serving as a technical leader in wastewater collection system hydraulic evaluations utilizing a variety of commercial hydraulic modeling software programs (e.g., Infoworks ICM, AquaTwin Sewer, SewerGems, 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.

Requirements

What you’ll need

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., InfoWater Pro).
PE licensure in the State of California. PE licensure in other states in which the firm is actively practicing may also be considered.
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 InfoWater PRO; experience with Aquanuity software.

Benefits

Comp & perks

Comprehensive array of valuable benefits to protect your health, your family, and your way of life
Medical, dental, vision, flexible spending accounts, health saving 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, and even pet insurance.
Support in on-going education through our 529 college savings plan/student loan repayment program
Tuition reimbursement, paid professional memberships, paid training, and Leadership Academy programs
Recognized for your contributions at West Yost through milestone anniversary benefits, peer to peer recognition programs, the potential for employee stock ownership
Annual monetary and paid time off bonuses, performance-based bonus eligibility, merit increase eligibility, and employee referral bonuses
Wellness reimbursement.