Laboratory Assistant - Wet Chemistry

Onterris, Inc.; Orange (CA); On-site; USD 23,000 - 28,000; Full time

Job summary

Onterris, Inc. is seeking a Laboratory Assistant for our Orange, CA wet chemistry lab. This full-time role supports sample prep, data records, and lab cleanliness to ensure on-time results.

You will work 7:30 AM–4:00 PM Tue-Sat, handle samples, reagents, and PPE, and follow SOPs and QA requirements in a safety-driven environment.

Qualifications

• High School diploma or equivalent required.
• Ability to follow written procedures and instructions.
• Basic understanding of laboratory safety practices.

Responsibilities

• Retrieve, receive, label, store, and dispose of samples in accordance with SOPs, QA requirements, and safety procedures.
• Perform basic sample preparation for soil, water, and air samples under supervision.
• Prepare reagents and solutions following approved written procedures.
• Perform gravimetric and titrimetric measurements as trained.
• Maintain cleanliness and organization of laboratory work areas, glassware, and storage locations.
• Restock consumables, chemicals, and supplies and notify supervisors of low inventory.
• Support proper sample storage, refrigerator/freezer organization, and waste handling.
• Wear required PPE at all times and report unsafe conditions or spills immediately.
• Comply with Onterris Quality Assurance Program and other policies.
• Comply with Onterris Health and Safety Plan.

Skills

Attention to detail

Teamwork

Follow procedures

Safety awareness

Education

High School diploma or equivalent

Job description

## Laboratory Assistant - Wet ChemistryApplylocations: USA-CA-Orangetime type: Full timeposted on: Posted Yesterdayjob requisition id: R8664# **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 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 prepping and handling samples, keeping records accurate, 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:** Wet Chemistry**Schedule:** Full-Time. Tuesday - Saturday, 7:30 AM - 4:00 PMTo thrive in this role in the Wet Chemistry Department, you’ll be comfortable taking ownership of the following responsibilities: * Retrieve, receive, label, store, and dispose of samples in accordance with SOPs, QA requirements, and safety procedures* Perform basic sample preparation for soil, water, and air samples under supervision* Prepare reagents and solutions following approved written procedures* Perform gravimetric and titrimetric measurements as trained* Assist with filtration, aliquoting, weighing, and other defined preparation steps* Maintain cleanliness and organization of laboratory work areas, glassware, and storage locations* Restock consumables, chemicals, and supplies and notify supervisors of low inventory* Support proper sample storage, refrigerator/freezer organization, and waste handling* Wear required PPE at all times and report unsafe conditions or spills immediately* 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**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 25 lbs independently and 50 lbs using assisted lifting equipment* Must be comfortable working with strong acids and solvents#LI-SG1#INDONTOnterris 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.### Make your mark in a world where it matters.At Onterris, we take on complex challenges with purpose and momentum, alongside teams that lead with integrity, deliver together, and invest in your growth.### For Planet and Progress starts with you."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### Join a movement for better thinking and lasting impact.“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### Do work that protects air, water and communities.“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