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
Be the connection that keeps everything moving. As an on-site Purchasing Coordinator at Onterris Laboratories in Orange, CA , you'll bridge teams and suppliers, coordinate purchasing activities, and play a key role in supporting day-to-day procurement operations. You'll be responsible for translating internal needs into accurate purchase orders, coordinating with suppliers, and maintaining purchasing documentation. This coordinator acts as a communication hub between internal departments and vendors, ensuring smooth supply chain flow.
The compensation range for this role is $25 to $35 per hour , commensurate with experience, skills, and geographic location.
Schedule: Full-Time, Monday - Friday
To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities:
Serve as a local lead for Coupa purchasing processes, including requisitions, purchase orders, receiving, ordering templates, and routine purchasing workflow support
Create, process, and manage purchase orders from requisition to delivery and receipt, ensuring transactions are completed accurately and timely in Coupa
Verify pricing, quantities, supplier information, and purchasing requirements and compliance before processing orders and proactively research discrepancies when identified
Track orders and shipments, proactively follow up on delays or backorders, and work with suppliers and lab teams to ensure on-time delivery
Maintain vendor records, contracts, blanket POs, and compliance documentation
Communicate with suppliers regarding order status, pricing discrepancies, backordered inventory, lead times and other issues; resolve these issues in a timely manner
Resolve invoice discrepancies with Accounts Payable, laboratory users and suppliers to resolve PO, receipt and pricing
Support sourcing activities by gathering quotes and comparing pricing and identifying opportunities for cost savings
Establish and maintain inventory levels and reorder materials as needed to allow for continuous, uninterrupted production
Work directly with Corporate Procurement Team to onboard new vendors
Prepare procurement activity reports and maintain organized purchasing records
Generate utilization reports and track consumable spending trends by laboratory, project, vendor and category
Develop ordering templates and train users on their usage
Communicate as the primary site contact with Corporate Procurement team for issues or updates regarding national vendors, pricing lists, and vendor contact information
Your Expertise and Skills
These requirements reflect the knowledge, skills and abilities that help you do your best work here.
Proficiency with procurement/ERP systems (e.g., Coupa, Workday)
Strong understanding of purchase order and invoicing processes
Strong Microsoft Excel skills and proficiency with procurement software
Competence in Microsoft Office and procurement software
Attention to detail and accuracy
Strong communication and vendor‑relationship skills
Organizational and multitasking abilities
Problem‑solving and adaptability
Associate or bachelor’s degree in business, supply chain, or related field preferred
2–4 years in purchasing, procurement, or supply chain support
Certifications: CPSM, CSCP,…