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 reconciliation through coursework, internships, or work experience.
• Interest in aerospace, defense, manufacturing, or technical products and willingness to learn relevant materials, processes, and supplier requirements.
• Ability to work accurately with data, identify discrepancies, and use basic Excel formulas, filters, and trackers.
• Familiarity with procurement ethics, export controls, quality documentation, or regulated-industry practices is a plus.
• APICS, ISM, Lean, Six Sigma, or related coursework/certification is a plus.
• Active U.S. Government security clearance or ability to obtain one.

Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Additional Eligibility Requirements

This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.

Affirmative Action/EEO Statement

Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact hr@castelion.com. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law.

Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation.

EAR/ITAR Requirements

This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.