Castelion was founded to restore America’s ability to field advanced weapons at speed and scale. Inspired by the engineering urgency of the WWII and Apollo eras, we combine rapid iteration, vertical integration, and scalable manufacturing to deliver affordable, high-performance strike systems. Our mission: rebuild industrial agility to strengthen national security and outpace evolving threats.

About the Role:

We are seeking a highly proactive, hands-on Facilities Manager to lead the development, operations, and continuous improvement of Castelion's new 1,000-acre site in New Mexico. 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 the facility, balancing immediate operational needs with long-term site development as the company rapidly grows.

This is a ground-up opportunity: the site is in early stages, and success will require building structure from ambiguity. You will establish and implement standard operating procedures (SOPs), develop maintenance and facilities systems, and drive prioritization across competing demands. The ideal candidate thrives in fast-paced environments, brings strong operational discipline, and is comfortable making decisions with incomplete information while maintaining a high bar for safety and execution.

Requirements

Basic Qualifications

High school diploma or GED required; associate or bachelor's degree preferred
7+ years of experience in facilities, site operations, or industrial/manufacturing environments, with increasing responsibility
Experience supporting large, complex, or multi-building sites (campus-style or industrial environments preferred)
Demonstrated ability to build and implement SOPs, maintenance programs, and operational processes from the ground up
Strong working knowledge of building systems (HVAC, electrical, plumbing, life safety) and maintenance best practices
Demonstrated operational discipline in high-reliability environments with a focus on uptime and safety
Strong understanding of workplace hazards and safety practices
Proven ability to prioritize effectively across competing demands in a fast-paced, ambiguous environment
Experience managing vendors, contractors, and cross-functional stakeholders
Strong communication, organizational, and problem-solving skills
Ability to operate independently with high ownership and accountability
Ability to support off-hours or emergency response as needed

Preferred Skills and Experience

Experience standing up new facilities, greenfield sites, or major expansions
Background supporting manufacturing, CNC machining, or high-mix, low-volume production environments
Familiarity with maintenance management systems (CMMS), asset tracking, and reliability programs
Experience with infrastructure or capital projects (site development, utilities, equipment installs)
Strong competency in root cause analysis and continuous improvement methodologies
Experience in aerospace, defense, or other regulated industrial environments
Budget ownership and cost control experience

Benefits

Employee Equity: Meaningful equity for all full-time employees - share value has increased 150x in three years
Personal Time Off: Four (4) weeks of paid time off to unplug, reset, and come back sharp—velocity matters, burnout doesn't
Company Paid Holidays: Ten (10) company paid holidays
Medical: We offer plans at 100% employee covered and 80% of dependent coverage
Dental & Vision: We cover 90% employees and 80% for dependents to ensure you and your family have access to quality preventive and ongoing care
FSA/HSA: To support long-term health and financial resilience, we offer FSA and HSA options that allow employees to set aside pre-tax dollars for eligible medical and dependent care expenses
Retirement: 401k plan offered to support long term financial growth along side high-impact, high-velocity work
Paid Parental Leave: We support growing families with meaningful time to bond and recover. Birthing parents are eligible for up to 10 weeks of paid leave, while non-birthing parents may take up to 4 weeks of paid leave. This time can be used for pre-natal care, pregnancy, childbirth, and related medical needs—ensuring every parent has the support they need during this important life moment.8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees
Meals & Catering: Frequently catered lunches and team meals, plus company-covered meals when extra time or effort is required
Snacks & Beverages: Fully stocked kitchen with unlimited snacks and drinks to keep you fueled throughout the day
Performance & Fitness: $100 monthly fitness stipend to support peak performance and health, both inside and outside of work
EV Charging: Onsite electric vehicle charging available for employees

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