Associate Engineer - Treatment

West Yost; Concord (CA); Hybrid; USD 105,000 - 149,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

401(k) with employer match

Job summary

West Yost is seeking an Associate Engineer – Treatment to join our Water/Wastewater Treatment group. This mid‑level role focuses on planning and design of water and wastewater systems, with client involvement and growth opportunities within the firm’s Treatment practice.

You will prepare designs and reports, collaborate with project managers, and help develop proposals while coordinating with engineers and technicians. Travel to client offices may be required.

Qualifications

• Bachelor’s or Master’s degree in Civil or Environmental Engineering or related field.
• 5+ years of experience preferred.
• Knowledge of design of water and/or wastewater treatment plants and recycled water systems.
• Positive and clear written and verbal communication practices are essential.

Responsibilities

• Prepare plans, specifications, calculations, and reports for water/wastewater treatment projects.
• Decide on engineering techniques and sequences for each project stage with input from PMs.
• Evaluate water quality data for treatment facilities.
• Develop technical writing including memoranda, design reports, and master plans.
• Estimate timescales and costs to meet client specifications.
• Assist senior engineers with proposals.
• Coordinate project assignments with EITs, engineers, and technicians.
• Research regulatory and code issues with City, County, and State agencies.
• Attend meetings and interact with clients.

Skills

Water/wastewater design knowledge

Effective communication

Client interaction

Team coordination

Education

Bachelor’s or Master’s degree in Civil or Environmental Engineering

Job description

Who We Are:

West Yost is a water resource management and engineering firm focused exclusively on water. Since our founding in 1990, we have partnered with public agencies including cities, counties, utilities, and water districts to plan, design, and deliver water, wastewater, and stormwater solutions that support safe, reliable, and resilient communities.

Our team of more than 265 professionals brings together expertise in groundwater, water supply, treatment, infrastructure, recycled water, stormwater, construction management, and operations technology. We support projects from early planning and permitting through design and construction and complement our engineering services with program management and public outreach to help clients move work forward and engage their communities.

We are proud to be certified as a Great Place to Work®, and to be recognized among Fortune’s® Best Workplaces in Consulting and Professional Services from 2023 to 2025, as well as a top-ranked firm in the AEC Advisors Diversity Index. At West Yost, we are committed to being the water firm of choice for our clients and our team, advancing water resources for future generations through strong partnerships, practical solutions, and a shared commitment to quality.

Compensation Range: $105,230 - $148,560. Based on our Sacramento, CA office location. (West Yost uses geographic salary differentials that would apply for candidates in other regions).

Status: Full-time, Exempt

Location(s): Preferred locations are Sacramento, CA, Concord, CA, or Lake Oswego, OR (https://www.westyost.com/locations/).

This is a Hybrid role with a minimum of 3 days in the office and optional 2 days remote.

ASSOCIATE ENGINEER – TREATMENT

DESCRIPTION

The Associate Engineer - Treatment is to participate in our Water/Wastewater Treatment group. Expertise is desired in planning and design of water and/or wastewater treatment and recycled water systems. This role will contribute to the development of the firm’s Treatment practice and have client involvement. This is a mid-level position.

Other duties include:

• Preparing plans, specifications, calculations, equipment evaluations, preliminary layouts and technical reports for water and/or wastewater treatment and recycled water system projects.
• Deciding on the most appropriate engineering techniques and sequences of activities for each project stage, with input from project managers.
• Completing evaluations of water quality data for treatment facilities.
• Developing technical writing and correspondence including preparation of technical memoranda, preliminary design reports, master plans and other reports related to the planning and design of treatment systems.
• Making estimates for timescales and costs ensuring plans meet the client’s specifications.
• Assisting senior-level engineers with the preparation of proposals.
• Coordinating project assignments with other EITs, engineers and technicians on the project team.
• Researching regulatory, legislative, or code issues with City, County, and State agencies.
• Attending meetings and interacting with clients.

REQUIRED QUALIFICATIONS

• Bachelor’s or Master’s degree in Civil or Environmental Engineering, or related field.
• 5+ years of experience preferred.
• Knowledge of design of water and/or wastewater treatment plants and recycled water systems.
• Positive and clear written and verbal communication practices are essential for success in this position.

Travel Requirements

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

A Little About the West Yost Life

You will experience many opportunities to grow and develop professionally with your colleagues through collaborative in‑person work experience, knowledge sharing, and mentorship opportunities. We also offer hybrid and flexible work schedules to our employees to help promote and encourage a healthy work/life balance. All of our team members have access to local and company-wide events, our Diversity, Equity and Inclusion Workgroup, Culture Workgroup, Wellness Workgroup, book clubs, charitable giving and community service, firm-wide resources, peer groups (young professionals & middlers group), and mentorship and leadership programs. We support and foster your career success and encourage you to be in control of your future with us.

At West Yost, we make space for connection across the firm. Each month, we hold an all-hands meeting that bring together team members from every location, including those working remotely, to stay aligned and engaged. Individual sectors and teams also hold their own monthly meeting. At the local level, our offices host gatherings, from camping trips and river rafting to community events and celebrations.

Once a year, we come together in person for our Annual All Staff event, a firmwide experience focused on learning, networking, and building relationships across teams. That evening, we continue our longest‑standing tradition, the Duck Dinner, where West Yosters are encouraged to bring a guest and enjoy a night of great food, connection, and entertainment.

We work hard, and we place equal value on having fun.

Our commitment to quality begins with our hiring practices. We employ the most talented team members in our industry from all backgrounds. We are highly selective of the individuals we choose to represent the firm, seeking only those individuals whose technical abilities and commitment to client service matches our vision for excellence. We are dedicated to our number one asset, our employees. Because we are employee‑owned, we are responsible for and rewarded by our own success. Come to West Yost where, with our support, you’ll do the best work of your life.

Standard Benefits:

We provide a comprehensive array of valuable benefits to protect your health, your family, and your way of life. Benefits include 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.

Other Unique Benefits:

You’ll be provided with 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. You’ll be 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. We also offer a wellness reimbursement.