About Us At Onterris, we build careers grounded in purpose, responsibility and real-world impact. “For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive. When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact. Together, we will advance our way of life and protect the integrity of our environment every step of the way. A Day in the Life As a Laboratory Technician I in our Orange, CA Laboratory, you’ll be responsible for preparing samples, support daily lab operations, and collaborate with experienced teammates - delivering safe, accurate, on-time results every day. The compensation range for this role is $20 to $25, commensurate with experience, skills, and geographic location. Department: SVOA (Semi-Volatiles) Schedule: Full-Time. Mon - Fri 2:00 pm - 10:30 pm (2nd Shift) To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities: Perform all Laboratory Assistant duties, including sample handling, organization, and general laboratory upkeep Retrieve, store, and dispose of samples in accordance with SOPs, chain of custody, and hold-time requirements Execute routine sample preparation for assigned SVOA methods under established SOPs Prepare reagents and solutions following approved procedures Perform gravimetric and titrimetric measurements as required Support daily batch preparation and completion to meet turnaround time expectations Perform waste handling, labeling, and documentation in compliance with regulatory and internal requirements Maintain inventory awareness and notify senior staff of low or critical supplies Maintain clean, organized, and contamination-controlled workspaces Complete temperature logs and routine laboratory documentation accurately Communicate workflow issues, delays, or deviations to senior technicians, analysts, or group leadership Comply with Onterris Quality Assurance Program and Health & Safety Plan All other duties as assigned Your Expertise and Skills These requirements reflect the knowledge, skills and abilities that help you do your best work here. High School diploma or equivalent required (Associate degree or coursework in science preferred) Basic understanding of laboratory workflows and sample preparation concepts Ability to follow SOPs precisely and work methodically Familiarity with laboratory safety practices, PPE usage, and waste handling Strong organizational and time-management skills Clear verbal and written communication skills Comfortable working with chemicals, solvents, and laboratory equipment Ability to stand for extended periods and lift up to required weight limits Preferred Skills Prior Laboratory or sample preparation experience (environmental preferred) Familiarity with Semi-Volatile methods (8015/8080/8270) or environmental testing workflows Experience working in a regulated laboratory environment Work Environment and Physical Requirements The physical and environmental requirements below reflect what’s typically needed to perform the essential functions of this role safely and effectively. We may provide reasonable accommodations to qualified individuals with disabilities, consistent with applicable law, to support performance of the essential functions. Sitting, standing, and walking Must be able to work in a stationary position for entire shift duration Lifting and moving up to 25 lbs independently and 50 lbs using assisted lifting equipment Works in an office and/or laboratory environment #LI-SG1 #INDONT Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com. We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more. At Onterris, we take on complex challenges with purpose and momentum, alongside teams that lead with integrity, deliver together, and invest in your growth. "Working with inspiring coworkers and clients across the globe over the past five years has been incredibly rewarding. Their passion motivates me to improve our client experience and work that I deliver." - Erin Peck, Emissions Services “There are not many places where a toxicologist can be boots-on-the-ground at an environmental emergency one day and deep in a human health risk assessment or litigation the next, but this company is one of them, and honestly, that breadth is what makes me love the work. We are a team of scientists with a broad range of talents and experiences who genuinely take the mission to heart, because protecting people and communities from chemical hazards is not abstract here; it is exactly why we show up every day. The culture reflects that shared commitment in the best way: collaborative, rigorous, and truly motivated by the impact we make together.” - Andre Richardson, Consulting “I knew my position here would be more than just a job. Every day is a new, exciting challenge to solve, and I get to go home knowing that the work I am doing is having a positive impact on the world.” - J Esteves, R&D

Laboratory Technician I - SVOA (2nd Shift).

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