Senior Principal Engineer – Water Systems, Water Supply Planning

West Yost

Senior - Principal Engineer focused on water systems and supply planning at West Yost. Leading hydraulic evaluations and project management for water resource initiatives.

Posted 7/27/2026full-timeIrvine • California, Oregon • 🇺🇸 United StatesSenior💰 $119,040 - $192,420 per yearWebsite

About the role

Key responsibilities & impact

Serving as a technical leader in water distribution system hydraulic evaluations utilizing a variety of commercial hydraulic modeling software programs (e.g., InfoWater Pro, OpenFlows WaterGEMS, Aquanuity, etc.).
Working as part of teams on projects throughout California and Oregon with an emphasis on Southern California-based projects and clients.
Analyzing water use, population, water quality, and facilities condition data
Evaluating water supply availability.
Developing water supply and water system capital improvement programs.
Preparing technical reports and master plans.
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 water 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.
10+ years of experience with Water System Planning and Hydraulic Modeling.
Excellent verbal and written communication skills.
Experience with CAD, GIS, 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
Maintaining professional competency may require attending education classes and seminars, reading professional publications, and attending professional society meetings.
This position may require out-of-office travel with occasional evening and overnight assignments.

Benefits

Comp & perks

Medical insurance
Dental insurance
Vision insurance
Flexible spending accounts
Health saving accounts (with West Yost contribution)
Paid vacation
Paid sick leave
Paid holidays
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
Education support through 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
Potential for employee stock ownership
Annual monetary and paid time off bonuses
Performance-based bonus eligibility
Merit increase eligibility
Employee referral bonuses
Wellness reimbursement