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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 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 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 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...
Mid-Level Environmental Scientist / Geologist
Tetra Tech - Irvine, CA
The Opportunity: Tetra Tech is currently seeking a Mid-Level Environmental Scientist/Geologist in our Irvine, CA or San Bernardino, CA office. Field work tasks may include planning and preparation, groundwater sampling, soil logging, water well installation oversight, remedial system operation and maintenance, and Phase I environmental site assessments. Office ...
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 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...
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...
