Process Project Engineer

Job description

The Opportunity

Join Tetra Tech's Water Team in Irvine to shape, modernize, and safeguard municipal and regional water infrastructure across Orange County and beyond.

As a Process Engineer – Project Engineer, you'll be part of our team that specializes in the engineering of public water systems including PFAS treatment systems and large-scale water treatment plants providing sustainable solutions and offering innovative approaches to help preserve safe and reliable water delivery for California.

This is a great opportunity for a licensed engineer who thrives in a collaborative, technical environment and wants to take the next step toward project leadership while contributing to some of the most meaningful treatment projects in the industry.

Why Tetra Tech

At Tetra Tech, we are Leading with Science® to solve the world's most complex challenges.

Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world.

For over 50 years, we have been at the forefront of innovation and sustainability.

Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development.

Our work has improved more than 625 million lives around the world.

Your Impact

Join Tetra Tech to make a real difference.

Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world.

Discover your full potential – join us to advance your career while leaving a lasting legacy.

Your Role

As a mid-level Process Engineer, you'll play a key role in developing treatment solutions for emerging contaminants and complex facility builds.

You'll work alongside senior technical leaders and project managers to advance detailed design and delivery across a range of public sector projects.

In this role you will:

• Collaborate closely with multidisciplinary teams, support client communications, and help ensure projects are delivered on time, on budget, and to the highest technical standards.

• Support Project Managers in delivering large-scale water and wastewater treatment projects from planning through construction.

• Participate in facility planning, alternatives evaluations, and conceptual design tasks.

• Execute the client's objectives by preparing construction drawings, specifications, cost estimates, and technical reports.

• Actively participate in project meetings and facilitate completion of action items to ensure timely progress.

• Lead the preparation of design calculations, process modeling, and equipment sizing for PFAS treatment (e.g., GAC, IX, RO), filtration, disinfection, and other unit processes.

• Team with senior engineers to identify and evaluate innovative technical solutions.

• Assist in preparing materials for client presentations, progress updates, and decision-making sessions.

• Participate in site visits, pilot testing, and construction support as needed.

This is an excellent role for a Project Engineer ready to step into larger project responsibilities while continuing to deepen technical expertise in water and emerging contaminant treatment.

Qualifications

• Bachelor's degree in Chemical, Environmental, or Civil Engineering.

• Professional Engineer (PE) license required (California PE preferred, or ability to obtain within 6 months).

• 5+ years of experience in municipal water/wastewater treatment design.

• Experience working with PFAS, GAC/IX/RO systems, or other advanced treatment technologies is preferred.

• Familiarity with process modeling software (e.g., BioWin, GPS-X) is a plus.

• Strong communication and organizational skills, with the ability to work effectively in a team environment.

CA Salary: $95,000- $130,000 dependent on experience

Life at Tetra Tech:

• The perks of working at Tetra Tech include:

• Comprehensive and market-competitive benefits.
• Merit-based financial rewards.
• Flexibility and company-wide commitment to work/life balance.
• Collaborative team atmosphere that values the contributions of all employees.
• Learning and development opportunities for ongoing professional growth

About Tetra Tech:

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide.

With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer.

All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law.

Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

We invite applications from all interested parties.

Explore our open positions at https://www.tetratech.com/careers.

Follow us on social media to learn more about our people, culture, and opportunities:

LinkedIn: @TetraTechCareers

X (Twitter): @TetraTechJobs

• Organization: 200 IEW

Required Skill Profession

Engineers