Laboratory Assistant - Metals

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.

Job Description

A Day in the Life

As a Full-Time Laboratory Assistant based in our Orange, CA Laboratory, you’ll step into the lab where every detail matters. You'll play a key role in supporting the Metals Department by assisting with disposal, cleaning glassware, handling samples, maintaining equipment, and maintaining a clean laboratory to support on-time results everyday. You’ll collaborate with a strong team of committed professionals, contribute to meaningful scientific work, and grow your expertise in a dynamic, quality-driven environment.

The compensation range for this role is $17.25 to $20 per hour, commensurate with experience, skills, and geographic location. 

Department: Metals

Schedule:  Full-Time. Monday - Friday, 8:30 AM - 5:00 PM

To thrive in this role in the Metals Department, you’ll be comfortable taking ownership of the following responsibilities: 

• Pick up, check in/out, retrieve, return, and organize samples; assist with sample weighing 

• Maintain clean and organized workstations, counters, floors, and glassware 

• Dispose of samples, instrument waste, and satellite waste safely 

• Monitor, receive, label, and store supplies; notify when inventory is low 

• Perform routine equipment maintenance and calibration (hot blocks, pipettes, balances, pH/turbidity meters, etc.) 

• Handle and replace gas cylinders safely 

• Perform pH and turbidity checks 
• Handling the pre-treatment and accurately weigh samples for laboratory analysis

• Use LIMS for daily tasks and maintain logbooks 

• Follow all safety, PPE, and QA requirements 

• Stay current with required QA  

• Communicate and coordinate with QA, Safety members, Sample Receiving, and Group Leader 
• Comply with Onterris Quality Assurance Program and other policies
• Comply with Onterris Health and Safety Plan
• Other duties as assigned by the Group Leader, Operations Manager, or Lab Director

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
• Ability to follow written procedures and instructions
• Basic understanding of laboratory safety practices
• Strong communication and teamwork

Preferred Skills

• Prior laboratory, sample-handling, or wet chemistry experience
• Strong attention to detail and organizational skills
• Ability to work effectively under supervision in a team-based environment
• Willingness to learn laboratory procedures and workflows

Work Environment & 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.

• Works in a laboratory and/or office environment
• Sitting, standing, and walking
• Must be able to work in a stationary position for entire shift duration
• Lifting and moving up to 50 lbs, including pushing/pulling
• Must be comfortable working with strong acids and solvents

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#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.