Purchasing Coordinator

Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability. This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function. Purchasing Coordinator As a Purchasing Coordinator, you will provide essential administrative and operational support to Castelion’s Purchasing and Strategic Sourcing teams. This entry-level role is designed for a recent college graduate who is organized, detail-oriented, responsive, and eager to learn the fundamentals of purchasing in a fast-moving aerospace and defense environment. You will help maintain accurate purchasing records, support purchase-order activities, coordinate routine communication with suppliers and internal teams, and keep sourcing work moving. You will work under the direction of Commodity Managers, Global Supply Managers, and purchasing leadership. This role has defined responsibilities and is not expected to independently negotiate, select suppliers, or make sourcing commitments. Responsibilities Create, update, route, and maintain purchase requisitions, purchase orders, acknowledgments, and related documentation in ERP/MRP and approved purchasing systems. Assist with routine supplier follow-up on purchase-order acknowledgments, promised dates, shipment status, invoices, and required documentation; escalate delays or discrepancies to the responsible buyer or manager. Maintain accurate supplier, pricing, lead-time, order-status, and document records in accordance with established processes. Support the purchasing team with request-for-quote administration, including preparing approved templates, tracking responses, organizing supplier information, and maintaining bid files. Coordinate with receiving, quality, materials, engineering, finance, and accounts payable to help resolve routine order, receipt, invoice, and documentation issues. Prepare basic status reports, trackers, meeting notes, and action-item lists for sourcing and supplier-review meetings. Assist with supplier onboarding, compliance-document collection, and maintenance of approved supplier records under the direction of the purchasing team. Support accurate filing and retention of quotes, purchase orders, acknowledgments, certifications, and other procurement records. Learn and follow approved buying channels, approval limits, purchasing policies, ethics requirements, and escalation procedures. Identify missing information, data inconsistencies, or potential schedule issues and promptly bring them to the attention of the appropriate team member. Participate in training, process-improvement activities, and cross-functional coordination to build purchasing and supply-chain capability. Perform other administrative and coordination tasks in support of the Purchasing and Strategic Sourcing organization Basic Qualifications Bachelor’s degree in supply chain, business, operations, finance, engineering, or a related field; recent graduates are encouraged to apply. Internship, academic project, campus employment, or up to 1 year of relevant experience in purchasing, supply chain, operations, manufacturing, customer service, or data administration. Strong attention to detail, organization, follow-through, and ability to manage multiple routine priorities in a deadline-driven environment. Clear written and verbal communication skills and a professional approach to internal and supplier interactions. Proficiency with Microsoft Excel, Word, PowerPoint, and collaboration tools. Preferred Skills and Experience Exposure to ERP/MRP systems, purchase orders, bills of material, inventory, receiving, or invoice recon…

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