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, CPP is a plus. 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. • Works onsite in a combination of office, laboratory production areas, and warehouse environments to support purchasing, inventory, and operational needs • Regular interaction with vendors, suppliers, internal departments, and management through phone, email, virtual meetings, and in-person communication • Fast-paced environment requiring the ability to manage multiple priorities, deadlines, and interruptions • Frequent use of computers, purchasing software, ERP systems, spreadsheets, and other business applications • Frequent walking through office, laboratory, and warehouse areas to evaluate inventory levels, identify material needs, or purchasing activities • Ability to remain stationary for extended periods while performing computer-based work, data entry, and procurement activities • Frequent use of hands and fingers for typing, data entry, and operating office equipment • Ability to stand, walk, bend, reach, lift, and carry items weighing up to 50 lbs., such as files, office supplies, or product samples #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.