EHS Site Manager

Job Description
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:

The EHS Manager will lead Environmental, Health, and Safety efforts for Castelion's Rio Rancho, New Mexico facility, supporting solid rocket motor manufacturing, integration, and test operations. This role is responsible for building and managing site EHS programs to ensure safe operations and regulatory compliance within a fast-paced, high-hazard manufacturing environment.

The EHS Manager will play a key role in facility startup, commissioning, and ramp to production, partnering closely with operations, engineering, and leadership to embed safety and environmental stewardship across development and manufacturing. The ideal candidate brings experience in process safety, hazard analysis, and regulatory compliance in aerospace, manufacturing, energetics, or other high-consequence environments, and will also provide periodic EHS support to Castelion's Midland, Texas test facility.

Requirements

• Bachelors degree in Environmental Health & Safety, Environmental Engineering, Chemical Engineering, Industrial Engineering, Safety Engineering, or a related technical field.
• 5+ years of experience supporting EHS and process safety programs in manufacturing, test, or other high-hazard operational environments.
• Experience implementing process safety management and hazard analysis techniques (HAZOP, LOPA, FMEA).
• Strong working knowledge of OSHA, EPA, ATF, NFPA, and applicable state and local regulations.
• Experience leading incident investigations and corrective action programs.
• Hands-on experience developing and implementing EHS programs in manufacturing or test environments.
• Strong communication and leadership skills with the ability to influence cross-functional teams.
• Willingness and ability to travel periodically to support Midland, Texas operations.

Benefits

• Employee Equity: Meaningful equity forall full-time employees - share value has increased 150x in three years
• Personal Time Off: Four (4) weeks of paidtime off to unplug, reset, and come back sharp-velocity matters,burnout doesn't
• Company Paid Holidays: Ten (10) companypaid holidays
• Medical: We offer plans at 100% employeecovered and 80% of dependent coverage
• Dental & Vision: We cover 90%employees and 80% for dependents to ensure you and your family haveaccess to quality preventive and ongoing care
• FSA/HSA: To support long-term health andfinancial resilience, we offer FSA and HSA options that allowemployees to set aside pre-tax dollars for eligible medical anddependent care expenses
• Retirement: 401k plan offered to supportlong term financial growth along side high-impact, high-velocity work
• Paid Parental Leave: We support growingfamilies with meaningful time to bond and recover. Birthing parentsare eligible for up to 10 weeks of paid leave, while non-birthingparents may take up to 4 weeks of paid leave. This time can be usedfor pre-natal care, pregnancy, childbirth, and related medicalneeds-ensuring every parent has the support they need during thisimportant life moment.8-weeks of paid parental leave for allparents. Additional paid pregnancy leave for CA employees
• Meals & Catering: Frequently cateredlunches and team meals, plus company-covered meals when extra timeor effort is required
• Snacks & Beverages: Fully stockedkitchen with unlimited snacks and drinks to keep you fueledthroughout the day
• Performance & Fitness: $100 monthlyfitness stipend to support peak performance and health, both insideand outside of work
• EV Charging: Onsite electric vehiclecharging available for employees