Project Engineer Jobs in Irvine, CA
Project engineer jobs in Irvine concentrate in the Irvine Spectrum, Great Park Neighborhoods, and the Irvine Business Complex, across aerospace and defense, semiconductor manufacturing, civil infrastructure, and medical devices. Employers hiring right now include Parker Hannifin, HDR, and Typsa. Scan the live roles below and apply to whichever ones fit.
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Showing 5 of 455+ Project Engineer jobs
The Opportunity:
Join Tetra Tech’s Water Team in Irvine, CA and play a key leadership role in strengthening California’s most vital water infrastructure. As a Process Engineer – Project Manager, you’ll lead multidisciplinary teams focused on advancing the design and delivery of innovative water treatment systems—tackling challenges driven by climate change, emerging contaminants, and evolving ecological needs. You’ll guide projects that protect public health and ensure sustainable, reliable water delivery for communities across Orange County and beyond.
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.
Position Summary:
The Process Engineer – Project Manager will oversee planning, design, and delivery of advanced water and wastewater treatment projects. This position requires strong technical insight, client management experience, and proven ability to lead complex programs from concept through construction. You’ll collaborate with senior leadership to expand client relationships, mentor engineers, and shape the growth of Tetra Tech’s water treatment practice across Southern California.
Essential Job Functions:
The following duties are considered essential to the role. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions.
Lead multidisciplinary teams in the design and implementation of PFAS treatment (GAC, IX, RO) and conventional water/wastewater process systems.
Manage large-scale design-build and design-bid-build projects for municipal water, wastewater, and reclaimed water facilities.
Oversee development of project scopes, budgets, schedules, and technical deliverables, ensuring alignment with client objectives.
Collaborate directly with public agencies and utilities to guide decision-making and facilitate project progress.
Prepare and deliver engineering reports, design packages, technical memoranda, and construction documentation.
Provide business development support, including proposal preparation, client presentations, and interview participation.
Build and maintain strong client relationships, identifying new opportunities for growth within the municipal market.
Mentor and train junior engineers, fostering technical development and professional advancement.
Support recruitment and team growth by identifying and developing emerging talent.
Ensure all project work meets quality, safety, and compliance standards.
Required Qualifications:
Bachelor’s degree in Civil, Environmental, or Mechanical Engineering.
Professional Engineer (PE) license required (California PE preferred, or ability to obtain within six months).
10+ years of experience in water and/or wastewater treatment system design and project delivery.
Demonstrated expertise in PFAS, advanced treatment technologies, or large-scale municipal treatment facilities.
Proven project management skills, including cost control, scheduling, and team coordination.
Proficiency with Microsoft Office Suite, Microsoft Project, and Bluebeam.
Excellent communication, leadership, and client relationship-building skills.
Valid U.S. driver’s license and ability to travel (~10%).
Preferred Qualifications:
Master’s degree in Civil, Environmental, or Chemical Engineering.
Experience managing projects under design-build delivery methods.
Knowledge of California regulatory frameworks and permitting requirements.
Experience in proposal development and public sector client engagement.
Familiarity with process modeling software or advanced design tools.
Physical Requirements:
Prolonged periods working at a computer and performing design-related tasks in an office environment.
Occasional walking, standing, bending, or lifting up to 25 pounds may be required.
Fieldwork may include exposure to outdoor environments and active construction sites.
Work Environment / Environmental Factors:
Work will primarily take place in an office environment with periodic field and client site visits.
Field conditions may involve variable weather, noise, and other environmental factors typical of treatment plant and construction settings.
CA Salary: $126,000-$180,000 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
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:
- Organization: 200 IEW
The Opportunity:
Join Tetra Tech’s Water Team in Irvine, CA and play a key leadership role in strengthening California’s most vital water infrastructure. As a Process Engineer – Project Manager, you’ll lead multidisciplinary teams focused on advancing the design and delivery of innovative water treatment systems—tackling challenges driven by climate change, emerging contaminants, and evolving ecological needs. You’ll guide projects that protect public health and ensure sustainable, reliable water delivery for communities across Orange County and beyond.
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.
Position Summary:
The Process Engineer – Project Manager will oversee planning, design, and delivery of advanced water and wastewater treatment projects. This position requires strong technical insight, client management experience, and proven ability to lead complex programs from concept through construction. You’ll collaborate with senior leadership to expand client relationships, mentor engineers, and shape the growth of Tetra Tech’s water treatment practice across Southern California.
Essential Job Functions:
The following duties are considered essential to the role. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions.
Lead multidisciplinary teams in the design and implementation of PFAS treatment (GAC, IX, RO) and conventional water/wastewater process systems.
Manage large-scale design-build and design-bid-build projects for municipal water, wastewater, and reclaimed water facilities.
Oversee development of project scopes, budgets, schedules, and technical deliverables, ensuring alignment with client objectives.
Collaborate directly with public agencies and utilities to guide decision-making and facilitate project progress.
Prepare and deliver engineering reports, design packages, technical memoranda, and construction documentation.
Provide business development support, including proposal preparation, client presentations, and interview participation.
Build and maintain strong client relationships, identifying new opportunities for growth within the municipal market.
Mentor and train junior engineers, fostering technical development and professional advancement.
Support recruitment and team growth by identifying and developing emerging talent.
Ensure all project work meets quality, safety, and compliance standards.
Required Qualifications:
Bachelor’s degree in Civil, Environmental, or Mechanical Engineering.
Professional Engineer (PE) license required (California PE preferred, or ability to obtain within six months).
10+ years of experience in water and/or wastewater treatment system design and project delivery.
Demonstrated expertise in PFAS, advanced treatment technologies, or large-scale municipal treatment facilities.
Proven project management skills, including cost control, scheduling, and team coordination.
Proficiency with Microsoft Office Suite, Microsoft Project, and Bluebeam.
Excellent communication, leadership, and client relationship-building skills.
Valid U.S. driver’s license and ability to travel (~10%).
Preferred Qualifications:
Master’s degree in Civil, Environmental, or Chemical Engineering.
Experience managing projects under design-build delivery methods.
Knowledge of California regulatory frameworks and permitting requirements.
Experience in proposal development and public sector client engagement.
Familiarity with process modeling software or advanced design tools.
Physical Requirements:
Prolonged periods working at a computer and performing design-related tasks in an office environment.
Occasional walking, standing, bending, or lifting up to 25 pounds may be required.
Fieldwork may include exposure to outdoor environments and active construction sites.
Work Environment / Environmental Factors:
Work will primarily take place in an office environment with periodic field and client site visits.
Field conditions may involve variable weather, noise, and other environmental factors typical of treatment plant and construction settings.
CA Salary: $126,000-$180,000 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
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:
- Organization: 200 IEW
See All 455+ Project Engineer Jobs in Irvine
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Find Project Engineer JobsProject Engineer Job Market in Irvine
Who's Hiring
- Parker Hannifin46
- HDR23
- Typsa23
- Concuir23C
- Tetra Tech23
Top Industries Hiring
- Consulting & Professional Services
Project Engineer Jobs in Irvine: Frequently Asked Questions
How do I get a project engineer job in Irvine?
Focus your search on Irvine's strongest hiring sectors: aerospace and defense contractors near the Irvine Spectrum, semiconductor and electronics firms in the Irvine Business Complex, and civil engineering consultancies tied to Orange County infrastructure projects. Candidates with experience managing design-build workflows, reading technical drawings, and coordinating cross-functional teams stand out here. Targeting mid-size defense and medtech firms that cluster in Irvine's business parks also opens more entry points than pursuing only large nationals.
Which companies hire project engineers in Irvine?
Companies currently hiring project engineers in Irvine include Parker Hannifin, HDR, and Typsa, per current listings on Migrate Mate as of August 2026. Irvine's employer mix leans toward established defense contractors, growth-stage semiconductor companies, and civil engineering consultancies serving Southern California's infrastructure pipeline.
Are there remote project engineer jobs in Irvine?
Yes, though project engineer roles are less remote-friendly than purely desk-based positions because many require site visits, equipment reviews, or hands-on coordination. About 25% of project engineer openings tied to Irvine are remote or hybrid as of August 2026, with the hybrid share skewing toward planning, scheduling, and documentation-heavy roles rather than field or lab assignments.
How can I get a project engineer job in Irvine with little or no experience?
The most realistic entry path in Irvine is targeting junior or associate project engineer roles at mid-size defense subcontractors and civil engineering firms in the Irvine Spectrum corridor, which hire more entry-level talent than large primes. Internships with Orange County infrastructure consultancies or electronics manufacturers also convert to full-time offers regularly. Candidates who can demonstrate proficiency in project scheduling tools, AutoCAD, or Primavera P6 get faster traction even without extensive field experience.
Which industries hire the most project engineers in Irvine?
Irvine project engineer roles concentrate in Consulting & Professional Services, based on current listings on Migrate Mate as of August 2026. Irvine's position as a hub for defense and aerospace primes, a growing semiconductor corridor, and a regional center for infrastructure development keeps demand across those sectors consistently active.
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See All 455+ Project Engineer Jobs in Irvine
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