Production Coordinator

About Castelion

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production ’re designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

As a Production Coordinator, you’ll play a key role in Castelion’s manufacturing and supply chain operations. Working closely with the Materials Manager, production leadership, and cross‑functional teams, you will help plan, track, and coordinate material and part flow across our production cells.

This role requires exceptional organization, attention to detail, and communication skills. You’ll be responsible for ensuring materials, documentation, and hardware are accurately staged and ready to meet demanding build schedules — helping keep production on track in a fast‑moving, high‑precision environment.

• Track and coordinate parts, assemblies, and documentation throughout the manufacturing workflow to meet schedule targets.
• Maintain accurate and up‑to‑date data in the MRP/ERP/MES systems; ensure all transactions reflect physical material movement.
• Collaborate with the Supply Chain, Engineering, and Production teams to resolve material shortages, discrepancies, and delays.
• Monitor work order progress, communicate part status, and identify potential bottlenecks or risks to leadership.
• Support production planning by requesting kits, verifying demand, staging materials, and coordinating transfers between build areas.
• Coordinate with Shipping & Receiving and Inventory teams to ensure inbound and outbound materials are processed correctly and promptly.
• Generate and maintain production reports, material trackers, and build documentation.
• Support continuous improvement initiatives focused on improving material flow, data accuracy, and production efficiency.
• Maintain compliance with company procedures and ITAR/export control requirements.

• 4+ years of experience in a manufacturing, supply chain, or logistics environment.
• Experience working with ERP/MES systems (e.g., Net Suite, Oracle, SAP, or equivalent).
• Strong organizational skills with the ability to manage multiple priorities in a fast‑paced environment.
• Proficiency with Microsoft Office and Google Workspace tools; strong Excel/Sheets skills.
• Excellent written and verbal communication skills.
• Ability to work onsite full‑time at our Torrance, CA facility, with flexibility for overtime as needed.

• Experience coordinating production or materials in aerospace, defense, or high‑tech manufacturing environments.
• Familiarity with lean manufacturing principles, 5S, and continuous improvement tools.
• Experience generating and interpreting production metrics or dashboards (e.g., Tableau, Power BI).
• Hands‑on experience with material handling or coordination across receiving, inspection, and production.
• APICS, PMP, or similar certification.

All employees are granted long‑term stock incentives as part of their employment  employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.

Bias to Action and Creative Problem Solving
. Desire and experience questioning assumptions in ways that lead to breakthrough ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support.

High Commitment, High Initiative
. A successful candidate will have a genuine passion for Castelion’s mission and consistently look for ways to contribute to the company’s technical goals and prevent hardware blockers. Ability to work in a fast‑paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.

Clear Communicator
. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators,…