Inventory Specialist

Castelion; Rio Rancho (NM); On-site; USD 42,000 - 64,000; Full time

Benefits offered by this job

Equity

Paid time off

Company holidays

Health benefits

Parental leave

Fitness stipend

EV charging

Catered meals

Stocked kitchen

Dependent coverage

Job summary

Castelion is seeking an Inventory Specialist to maintain inventory integrity across physical and system environments, coordinating with Purchasing, Production, and Supply Chain to ensure materials are received, tracked, stored, and issued to support production.

The role emphasizes attention to detail, hands-on execution, and continuous improvement, with responsibilities including cycle counts, audits, and aligning ERP data with physical stock to enable reliable planning.

Qualifications

• 5+ years experience in Material Management or related field.
• Experience with ERP in a manufacturing environment.
• Advanced Excel skills with data analysis.
• Proficient in Word, Excel, and PowerPoint.
• Experience working with hazardous materials.
• Strong written and verbal communication skills.
• Self-motivated with hands-on approach and continuous improvement mindset.
• Able to work in a fast-paced environment.

Responsibilities

• Track, receive, identify, and document inbound inventory per procedures.
• Coordinate shipping activities and ensure outbound materials are processed and documented.
• Maintain alignment between physical stock and ERP data.
• Own inventory accuracy via cycle count program.
• Conduct regular physical inventories and reconcile discrepancies.
• Collaborate with Purchasing, Production, and other stakeholders to resolve variances.
• Identify root causes and implement corrective actions.
• Support daily production kitting and ensure materials per monthly plan.
• Optimize storage locations for space and material flow.
• Maintain compliance with procedures, standards, and security.
• Lift up to 50 lbs unassisted as required.
• Support continuous improvement in inventory control and data accuracy.

Skills

Material management

ERP systems

Excel (Advanced)

Microsoft Office

Hazardous materials handling

Communication skills

Continuous improvement

Fast-paced environment

Job description

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts.

This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact.

Inventory Specialist

As an Inventory Specialist, you'll play a critical role in maintaining the integrity, accuracy, and efficiency of inventory operations across physical and system environments. Working closely with Purchasing, Production, and Supply Chain teams, you will ensure that materials are accurately received, tracked, stored, and issued to support production schedules.

This role requires strong attention to detail, hands‑on execution, and a continuous improvement mindset. You will be responsible for ensuring that physical inventory aligns precisely with system data to enable reliable production planning and operational excellence in a fast‑paced manufacturing environment.

Responsibilities

• Track, receive, identify, and document inbound inventory in accordance with company procedures.
• Coordinate shipping activities and ensure outbound materials are accurately processed and documented.
• Maintain alignment between physical inventory stock levels and corresponding quantities and locations within the ERP system.
• Own inventory accuracy by executing and maintaining a robust cycle count program.
• Perform regular physical inventory audits and reconcile discrepancies between physical and system records.
• Collaborate with Purchasing, Production, and cross-functional stakeholders to investigate and resolve inventory variances.
• Identify root causes of discrepancies and implement corrective actions to prevent recurrence.
• Support daily production kitting and ensure the production floor is supplied with required materials per the monthly production plan.
• Optimize physical storage locations to improve space utilization, material flow, and accessibility.
• Maintain compliance with company procedures, documentation standards, and security requirements.
• Lift, carry, handle, and transport materials up to 50 lbs unassisted as required.
• Support continuous improvement initiatives focused on inventory control, process efficiency, and data accuracy.

Basic Qualifications

• 5+ years of experience in Material Management, Manufacturing Operations, or a related field.
• Experience working in ERP systems within a manufacturing environment.
• Strong proficiency in Microsoft Office tools including Word, Excel, and PowerPoint.
• Experience working with and handling hazardous materials.
• Advanced Excel skills with the ability to analyze and reconcile data.
• Strong written and verbal communication skills.
• Self-motivated individual with a hands‑on approach and a demonstrated continuous improvement mindset.
• Clear communicator capable of working in a fast‑paced environment.

Preferred Skills and Experience

• Experience supporting inventory operations in aerospace, defense, or high‑tech manufacturing environments.
• Experience driving process improvements in inventory control or warehouse operations.
• Familiarity with structured cycle count programs and audit readiness practices.
• Experience supporting production kitting and material flow optimization.
• Professional certifications in supply chain or operations (e.g., "APICS") are a plus.
• Active U.S. Government security clearance or eligibility to obtain one.

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.

All full-time employees are granted meaningful long-term equity, sharing in the company’s significant growth trajectory. We offer four (4) weeks of paid time off, ten (10) company‑paid holidays, and comprehensive health benefits - including 100% employee‑covered medical and strong dependent coverage, along with dental and vision plans. We also provide paid parental leave to support growing families, a $100 monthly fitness stipend to promote health and performance, and onsite EV charging for convenience. In addition, employees enjoy perks like catered meals, company‑covered food during high‑demand periods, and a fully stocked kitchen to stay fueled throughout the day.

While this position does not currently require a U.S government‑issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government‑issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Affirmative Action/EEO Statement

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.