Facilities Coordinator

Why Castelion, Why Now

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.

Facilities Coordinator

We are seeking a highly proactive, detail-oriented Facilities Coordinator to support the daily operations that create a safe, organized, and welcoming workplace for Castelion employees and visitors. This role is critical to keeping our workplace running smoothly and executing workplace services, supporting employee experience initiatives, and managing key operational vendors. You will support day-to-day workplace execution—balancing routine operational needs with proactive planning as the team grows.

Success in this role requires strong organization, follow-through, and a service mindset—managing multiple workplace priorities, coordinating vendors and events, and maintaining consistent standards across the office. The ideal candidate thrives in fast-paced environments, brings excellent communication and customer service skills, and is comfortable prioritizing competing demands with high attention to detail.

This is a full-time position requiring high flexibility to support day-to-day office operations and occasional events outside standard hours.

Responsibilities

• Maintain the daily readiness and appearance of office spaces, conference rooms, kitchens, and common areas
• Conduct routine workplace walkthroughs to identify operational issues and ensure workplace standards are consistently maintained
• Manage incoming workplace requests and ensure timely resolution or escalation
• Submit and track Facilities tickets, coordinating with service teams to ensure timely resolution
• Maintain office supply inventory and coordinate replenishment, including ordering business cards and other operational materials
• Assist with new hire onboarding by preparing workstations, welcome materials, and office orientation logistics
• Support employee engagement activities, celebrations, and internal workplace programs
• Support day-to-day relationships with workplace service vendors, including coffee and beverage services, office supply vendors, and other recurring operational partners
• Monitor vendor performance, service quality, inventory levels, and adherence to service schedules, escalating issues as needed
• Support the planning and coordination of catering for small meetings and routine office events, including ordering, delivery coordination, setup, and cleanup
• Coordinate meeting room setups, catering, and workplace logistics for internal meetings
• Support workplace logistics for executive visits, recruiting events, customer visits, and employee engagement activities
• Support the maintenance of workplace documentation, inventory records, and standard operating procedures
• Support special workplace projects and continuous improvement initiatives

Basic Qualifications

• 4+ years of experience in workplace operations, office administration, hospitality, facilities coordination, or a related field
• Strong organizational and time management skills with the ability to prioritize multiple tasks
• Excellent customer service and communication skills
• Experience coordinating vendors and workplace services
• Proficiency in Microsoft Office and Google Workspace
• Ability to work independently in a fast-paced, high-growth environment

Preferred Skills and Experience

• Experience supporting offices with 100+ employees
• Experience coordinating workplace events and catering
• Experience with inventory management or workplace ticketing systems (e.g., JIRA)
• Experience in a startup, manufacturing, or aerospace environment
• Familiarity with badge, access, or basic office security procedures
• Experience partnering with EHS or facilities teams on office safety needs

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.

Benefits And Perks

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.