Lead Facilities Technician

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, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability. 

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.  

We are seeking a highly proactive, hands-on technician to support the daily operation, maintenance, and readiness of Castelion’s Midland, Texas site. This role combines hands-on facilities maintenance with day-to-day site coordination and is best suited for someone who is comfortable working with tools, troubleshooting basic building issues, supporting contractors, and jumping in wherever needed to keep the site operational.

The Facilities Technician will support general building maintenance across electrical, plumbing, HVAC, mechanical, and facility systems while also owning recurring operational needs such as vendor coordination, site services, supplies, and employee lunch coordination. This is not a primarily administrative or office management position. The successful candidate will spend a significant portion of their time in the field, walking the site, identifying issues, performing basic repairs and maintenance, supporting vendors and technicians, and assisting the Facilities Manager with site projects.

This is a highly dynamic role where no two days will look exactly the same. The ideal candidate is mechanically inclined, resourceful, organized, and comfortable solving problems independently. They should know when an issue can be safely handled directly and when it needs to be escalated to a licensed trade or specialized contractor.

This is a full-time, on-site position requiring the ability to work indoors and outdoors in varying weather conditions and flexibility to support changing site priorities and occasional needs outside of standard business hours.

Responsibilities

• Perform basic hands-on building and facilities maintenance, including minor electrical, plumbing, HVAC, mechanical, carpentry, hardware, and general repair work within appropriate skill and authorization levels
• Troubleshoot facility issues, identify likely causes, perform basic repairs when appropriate, and coordinate specialized contractors when additional expertise is required
• Conduct regular site and building walkthroughs to proactively identify maintenance, safety, cleanliness, organization, and site-readiness issues and drive them through resolution
• Use common hand and power tools to perform minor repairs, installations, adjustments, assembly, and preventative maintenance activities
• Assist the Facilities Manager with preventative maintenance activities and routine inspection of building systems, equipment, and site infrastructure
• Support facilities projects, equipment installations, contractor activities, site improvements, and other field work as needed
• Coordinate and escort facilities vendors and contractors, verify work completion, and communicate outstanding issues or follow-up requirements
• Submit, track, and follow up on facilities requests and work orders to ensure issues are resolved in a timely manner
• Coordinate recurring site services, including janitorial, waste services, pest control, water service, landscaping, portable restrooms, and other operational services
• Manage general site, maintenance, kitchen, snack, and beverage supplies to ensure appropriate materials remain stocked and available
• Coordinate daily employee lunches, including ordering, delivery coordination, setup, and resolution of day-to-day issues
• Receive and move facilities supplies, materials, and deliveries throughout the site as needed
• Partner with EHS, Security, Operations, and other site teams to safely coordinate facilities activities and maintain an operationally ready environment
• Support site events, visitor needs, employee activities, and other operational requirements as they arise
• Assist the Facilities Manager across a wide range of maintenance, operational, and project needs as site priorities evolve
• Take ownership of unexpected facilities issues and help drive them to resolution rather than waiting for direction

Basic Qualifications

• 2+ years of experience in facilities maintenance, building maintenance, industrial maintenance, facilities operations, maintenance technician work, or a related hands-on field
• Hands-on experience using common hand and power tools
• General working knowledge of building systems, including electrical, plumbing, HVAC, mechanical systems, and general building maintenance
• Ability to perform basic troubleshooting and minor repairs across common facility systems
• Ability to identify when maintenance issues require escalation to a licensed trade or specialized contractor
• Experience supporting preventative maintenance, inspections, repairs, or general facility upkeep
• Comfortable working in both office and industrial environments
• Ability to safely lift and carry up to 50 lbs.
• Ability to climb and work from ladders and perform physical tasks including bending, reaching, standing, walking, and moving materials
• Ability and willingness to work outdoors in hot, cold, and changing weather conditions
• Strong organizational and time-management skills with the ability to balance hands-on maintenance work with coordination responsibilities
• Demonstrated ability to operate effectively in a fast-paced environment where priorities can change quickly
• Strong ownership mentality with the ability to identify problems and drive tasks through completion with limited direction
• Experience coordinating vendors, contractors, deliveries, or service providers
• Strong communication skills and attention to detail
• Ability to work independently while maintaining strong communication with the Facilities Manager and broader site team
• Basic proficiency with Microsoft Office
• Willingness to support occasional needs outside of standard business hours

Preferred Skills and Experience

• Experience as a Facilities Technician, Maintenance Technician, Building Engineer, Industrial Maintenance Technician, or similar hands-on facilities role
• Experience supporting manufacturing, industrial, aerospace, defense, test, or other technically complex environments
• Experience performing preventative maintenance on building systems or facility equipment
• Working knowledge of electrical systems, plumbing systems, HVAC equipment, pumps, motors, compressed air, or other common industrial facility systems
• Experience supporting facilities projects, construction activities, equipment installations, or site improvements
• Experience coordinating and overseeing contractors and skilled trades
• Experience with purchasing, vendor quotes, purchase orders, invoices, parts, tools, and maintenance supplies
• Familiarity with facilities ticketing, work order, preventative maintenance, or project tracking systems such as JIRA
• A mechanically inclined, resourceful, team-first mindset with a willingness to take on responsibilities outside of a traditional job description as site needs evolve

Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.  

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. 

Additional Eligibility Requirements 

This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply. 

Affirmative Action/EEO Statement 

Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law. 

Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact [email protected]. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law. 

Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation. 

EAR/ITAR Requirements 

This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.