Facilities Carpenter

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.

Position overview

The Carpenter performs skilled maintenance, repair, and finish carpentry work to support industrial and commercial facilities. This role requires expertise in woodworking, facility repairs, and blueprint interpretation to maintain safe and functional work environments.

Key Responsibilities

• Construct, install, and repair structural elements including doors, windows, partitions, and framing
• Install and repair finish materials, including drywall, ceiling tiles, carpet, tile, and paint
• Perform basic roof repairs to maintain building integrity
• Repair and maintain fixtures, furniture, cabinetry, and shelving throughout the facility
• Read and work from blueprints, sketches, and specifications for construction and repair projects
• Inspect facilities routinely to identify structural or safety issues before they become larger problems
• Support buildout and reconfiguration of lab, office, and production spaces as the facility expands
• Capable of core drilling, lagging, and installing stud walls.
• Install and assemble pictures, whiteboards, monitors, furniture, and other similar items
• Assist in managing site-wide operations and support tasks as assigned
• Work on an on‑call basis and handle responsibilities assigned by management.

Basic Qualifications:

• High school diploma or equivalent, with 5+ years of carpentry-related experience
• Ability to inspect, identify, and provide solutions to repair systems
• Must own basic carpentry hand and power tools
• Active California driver's license

Preferred Qualifications:

• Experience maintaining and repairing roll-up doors
• Experience in an aerospace, defense, or other regulated manufacturing environment
• Cross-trade experience — drywall/finishing, basic electrical, or general facilities maintenance
• Experience coordinating with outside contractors on renovation or buildout projects
• Familiarity with a CMMS platform (eMaint, Maximo, or similar)
• Strong written and verbal communication skills

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 View email address on click.appcast.io. 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.