Inventory Specialist – Weekend Shift

About the job

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.

Inventory Specialist

As an Inventory Specialist, you will support the movement, control, and accuracy of materials used across Castelion's manufacturing operations. You will be responsible for receiving material into inventory, maintaining accurate inventory locations, picking and kitting production hardware, completing system transactions, and ensuring material is available where and when Production needs it.

The right person for this role is organized, detail-oriented, comfortable working within an ERP/MES system, and willing to be hands-on in a fast-paced manufacturing environment. You should be comfortable shifting priorities as production needs change while maintaining a high standard for inventory accuracy and material traceability.

Responsibilities

• Pick, organize, stage, and move raw materials, hardware, purchased components, machined parts, assemblies, and other production material.

• Pick and prepare kits in support of manufacturing work orders, ensuring required material and quantities are accurately accounted for.

• Receive, put away, transfer, issue, and consume inventory while ensuring physical material movements are accurately reflected in the ERP/MES system.

• Maintain accurate inventory locations and ensure material is stored in designated and properly labeled areas.

• Perform daily cycle counts, investigate discrepancies, and support inventory reconciliation activities.

• Maintain proper material identification, lot and serial traceability, and shelf-life controls as applicable.

• Monitor shelf-life-controlled inventory and maintain proper stock rotation, including FIFO requirements.

• Maintain strict material-handling practices to prevent damage, contamination, loss, or loss of traceability.

• Support material staging and replenishment to production areas based on manufacturing priorities.

• Locate and resolve missing or incorrectly stored material and escalate inventory discrepancies when necessary.

• Assemble and maintain racks, shelving, bins, labels, and other inventory storage systems.

• Operate forklifts, pallet jacks, carts, and other material-handling equipment as required.

• Maintain clean, organized, and audit-ready inventory areas using established 5S practices.

• Coordinate with Production, Engineering, Quality, Shipping & Receiving, and Supply Chain to resolve material issues and support production schedules.

• Support Shipping & Receiving and other Materials functions as operational priorities require.

• Follow all applicable safety, quality, export-control, and company procedures.

• Perform other Materials and Inventory tasks as assigned to support changing production requirements.

Basic Qualifications

• High school diploma or equivalency certificate.

• 3+ years of experience in inventory control, warehouse

• Forklift certified

Preferred Skills and Experience

• Ability to work the following shifts and overtime as needed to reach critical mission milestones

• Weekend Day Shift:

• 5:00 AM - 5:00 PM, Saturday - Tuesday

• Ability to lift 25 lbs. unassisted

• Lifting, standing, climbing, bending, grasping, sitting, pulling, pushing, stooping, stretching, and carrying are generally required to perform the functions of this position

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.