Head of Facility Management

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 at scale. We'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.

Facilities Manager

We are seeking a highly proactive, hands‑on Facilities Manager to own the day‑to‑day operations, maintenance, and continuous improvement of Castelion's facilities. This role is critical to enabling safe, reliable, and scalable operations across engineering, manufacturing, and office environments. You will serve as the primary owner of facilities performance - balancing immediate operational needs with longer‑term planning as the company rapidly grows.

Own all facilities operations across assigned sites, serving as the primary point of contact for facilities‑related needs, issues, and improvements

Manage and prioritize work orders, ensuring timely resolution of maintenance, repair, and operational issues

Oversee building systems including HVAC, electrical, plumbing, lighting, janitorial, security, fire protection, and office/industrial equipment

Source, manage, and hold accountable external vendors and service providers for quality, cost, and schedule

Develop and maintain preventative maintenance plans, service schedules, and facility documentation

Ensure facilities comply with applicable safety, health, environmental, and building regulations

Partner with EHS, operations, and leadership to support safety inspections, audits, and corrective actions

Lead space planning efforts, office and lab moves, furniture layouts, and site expansions

Manage facilities‑related purchasing, inventory, and budget tracking

Support emergency preparedness planning and incident response (fire drills, power outages, equipment failures)

Drive continuous improvement in facilities processes, responsiveness, and reliability as the company scales

Support special projects related to new site buildouts, expansions, or production ramp

High school diploma or GED required; associates or bachelors degree preferred

5+ years of experience in facilities management, building operations, or related roles

Strong working knowledge of building systems (HVAC, electrical, plumbing, life safety)

Experience managing vendors, contracts, and service providers

Ability to support off‑hours or weekend work during critical operations or emergencies

Comfortable operating in fast‑moving environments with shifting priorities

Bias to action, attention to detail, and commitment to building high‑quality, reliable workspaces

Proficiency with Microsoft Office; experience with CMMS or facilities management software preferred

Experience supporting engineering, manufacturing, or industrial facilities

Familiarity with safety, environmental, and regulatory compliance in technical or production environments

Experience scaling facilities for a rapidly growing company or startup

Hands‑on background with light maintenance, troubleshooting, or facilities projects

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

Leadership Qualities
Bias to Action and Creative Problem Solving
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.

Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company‑desired outcomes without compromising relationships. S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.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.

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