Tetra Tech · 1 week ago
Process Project Engineer
Irvine, CA
Full-time
Onsite
Senior Level
5+ years expTetra Tech is a leader in water, environment, and sustainable infrastructure. The Process Engineer – Project Engineer will support the planning, design, and implementation of water and wastewater treatment projects, requiring strong technical and analytical skills in a collaborative environment.
ConsultingEnvironmental EngineeringInfrastructureNatural ResourcesRenewable Energy
Responsibilities
Lead or support process design for advanced water and wastewater treatment systems, including PFAS, GAC, ion exchange (IX), RO, filtration, and disinfection processes
Participate in facility planning, alternatives analysis, and conceptual design for public sector treatment and infrastructure projects
Develop design calculations, process modeling, equipment sizing, and system layouts
Prepare engineering reports, technical memoranda, construction drawings, specifications, and cost estimates
Collaborate with project managers and senior engineers to deliver projects on time, within budget, and to the highest technical standards
Support construction-phase activities, including responding to RFIs, reviewing submittals, and conducting field observations
Participate in pilot testing, startup assistance, and site inspections as needed
Contribute to client meetings, presentations, and progress updates to communicate findings and recommendations
Work collaboratively across disciplines to develop innovative, sustainable treatment solutions
Mentor junior staff and contribute to internal knowledge-sharing initiatives
Qualification
Required
Bachelor's degree in Chemical, Environmental, or Civil Engineering
Professional Engineer (PE) license required
5+ years of experience in municipal water and/or wastewater treatment design
Demonstrated understanding of treatment processes, hydraulics, and process controls
Strong written and verbal communication skills
Ability to work both independently and collaboratively within a team-oriented environment
Preferred
Experience with PFAS, GAC/IX/RO, or other advanced treatment systems
Familiarity with process modeling software such as BioWin, GPS-X, or similar
Knowledge of California water regulations and permitting requirements
Experience supporting pilot studies, field testing, or treatment optimization
Desire to advance toward project management and client-facing responsibilities
Benefits
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
Company
Tetra Tech
Tetra Tech provides innovative solutions focused on water, the environment and energy for the government and commercial clients.
10001+ employees
H1B Sponsorship
Tetra Tech has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (7)
2024 (11)
2023 (11)
2022 (4)
2021 (13)
2020 (16)
Funding
Current Stage
Public CompanyTotal Funding
$500M2023-08-17Post Ipo Debt· $500M
1991-12-17IPO
Leadership Team
Dan Batrack
CEO
Craig Christensen
SVP - CIO
Recent News
Business Wire
2026-01-16
2026-01-16
Washington Technology
2026-01-11
Company data provided by crunchbase