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On-Call Field Archaeologist – California and Nevada
Tetra Tech - Irvine, CA
The Opportunity: Tetra Tech is adding On-Call Field Archaeologist for projects in California and Nevada, with opportunities to work on projects in other states. These are part-time, temporary hourly positions with hours that may vary depending on project-specific workload. Pay rates range between $26 to $30 per hour based on individual qualifications, educati...
Stormwater Practice Lead
Tetra Tech - Irvine, CA
The Opportunity: Tetra Tech IEW is growing its Stormwater Practice and is seeking a Regional Stormwater Practice Lead to spearhead program delivery and strategic growth in Southern California. This is a high-impact leadership role for a seasoned professional who thrives at the intersection of technical excellence, team leadership, and community-driven infrastru...
On-Call Archaeological Field Director – California and Nevada
Tetra Tech - Irvine, CA
The Opportunity: Tetra Tech is adding an On-Call Archaeological Field Director for projects in California and Nevada, with opportunities to work on projects in other states. These are part-time, temporary hourly positions with hours that may vary depending on project-specific workload. Pay rates range between $26 to $35 per hour based on individual qualifications,...
Conveyance Design Engineer
Tetra Tech - Irvine, CA
The Opportunity Tetra Tech is adding a Conveyance Design Engineer, EIT to our growing Water team based in Irvine, CA. This is a great opportunity for an early-career engineer who's looking for technical career growth on challenging water and wastewater conveyance projects with opportunities for training in business...
Process Design Engineer
Tetra Tech - Irvine, CA
The Opportunity Tetra Tech is seeking a motivated Process Engineer – EIT to join our growing water treatment team, contributing to cutting-edge PFAS and large-scale water/wastewater infrastructure projects across the U.S. You'll work directly with nationally recognized process engineers and a highly collaborative team known for delivering innovative, technicall...
Process Project Engineer
Tetra Tech - Irvine, CA
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 pl...
Process Engineer – Project Manager
Tetra Tech - Irvine, CA
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 Manager, you'll lead a team that working to strengthen water treatment infrastructure that faces major long-term threats, brought on by climate change, emerging con...
Civil Engineer, EIT
Tetra Tech - Irvine, CA
The Opportunity We are seeking a motivated and detail-oriented Civil Engineer, EIT to join our Irvine office. The successful candidate will support a variety of federal, municipal, commercial, and private development projects. These include design of stormwater systems, grading, multiuse paths, complete/green streets, and active trans...
Energy Student Intern Hybrid
Tetra Tech - Los Angeles, CA
The Opportunity: Glumac, a Tetra Tech Company, is seeking Energy Student Interns to join our team in Summer 2026! We have developed a robust 9-week Intern Program (June through August), intended to develop student interns in the building engineering consulting profession and provide them with the tools necessary to fill a full-time position on our team after graduatio...
Land Survey Intern
Tetra Tech - Irvine, CA
The Opportunity Tetra Tech is seeking a Land Survey Intern to join our team in Irvine, CA. This is a great opportunity for students or recent graduates who are passionate about land surveying and want hands-on experience working alongside industry experts. Why Tetra Tech At Tetra Tech, we are Leading ...
Site/Civil Engineering Intern
Tetra Tech - Irvine, CA
The Opportunity This is a student internship located in Tetra Tech's San Luis Obispo or Irvine, CA office. The successful intern will be responsible for providing to provide engineering support for the site/civil and transportation group. Typical projects include a wide variety of municipal, commercial, and Federal Department of Defense projects including stormwater, ...
Proposal Marketing Specialist
Tetra Tech - Irvine, CA
The Opportunity Tetra Tech invites you to consider the opportunity to join our dynamic Digital Systems marketing team as a Proposal Marketing Specialist. This is a remote position with the ideal candidate located in one of the following cities - Irvine, Orlando, Houston, Denver, Lafayette or New York. Your Role The su...
Conveyance Project Engineer
Tetra Tech - Irvine, CA
The Opportunity: Join Tetra Tech's Water Team in Irvine and play a key role in delivering innovative water and wastewater conveyance solutions across Orange County and beyond. As a Conveyance Project Engineer, you'll work alongside seasoned project managers to bring major infrastructure projects to life. Be part of our team that specializes in the engineering of publi...
Conveyance Engineer – Project Manager
Tetra Tech - Irvine, CA
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 Conveyance Engineer – Project Manager , you'll lead a team that specializes in the engineering of public water systems to upgrade aging infrastructure, provide sustainable solutions...
Civil Engineer, PE
Tetra Tech - Irvine, CA
The Opportunity: We are seeking a motivated and experienced Civil Engineer, PE to join our Irvine office. The successful candidate will contribute to a wide range of federal, municipal, commercial, and private development projects. These include design of stormwater systems, grading, multiuse paths, complete/green streets, and active transpo...