Laboratory Assistant - Wet Chemistry

Onterris Payroll•Orange, CA

1d•Onsite

About The Position

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 PM

Requirements

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

Nice To Haves

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

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