Furnace Technician, Ceramic Matrix Composites

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.

Castelion is seeking a hands-on Technician to support operation of our Ceramic Matrix Composite (CMC) manufacturing processes. This role will be responsible for operating high-temperature furnaces used in the production of advanced aerospace components, monitoring critical process parameters, supporting equipment troubleshooting, and ensuring successful execution of production runs.

The ideal candidate is mechanically inclined, comfortable operating complex manufacturing equipment, and enjoys working in a fast-paced manufacturing environment. This position plays a critical role in scaling Castelion's advanced materials manufacturing capabilities and supporting continuous production operations.

• Operate and monitor high-temperature CMC processing furnaces and associated manufacturing equipment.
• Load and unload production hardware, tooling, and fixtures according to established work instructions.
• Monitor process parameters including temperature, pressure, vacuum, gas flow, and cycle progression.
• Respond to equipment alarms, process deviations, and abnormal operating conditions.
• Perform routine equipment inspections and support preventative maintenance activities.
• Execute startup, shutdown, and changeover procedures.
• Support troubleshooting efforts and provide detailed documentation of equipment and process performance.
• Maintain accurate production records, process documentation, and shift handoff communications.
• Work closely with Manufacturing Engineers and Facilities personnel to improve equipment reliability and process performance.
• Maintain cleanliness and organization of manufacturing areas and equipment.
• Follow all safety procedures associated with high-temperature equipment, inert gases, vacuum systems, and industrial manufacturing operations.

• High school diploma or equivalent.
• 2+ years of experience operating industrial manufacturing equipment.
• Mechanical aptitude and strong troubleshooting skills.
• Ability to read and follow detailed work instructions and procedures.
• Ability to work flexible schedules, including night shifts, weekends, and overtime as required to support production needs.
• Ability to lift up to 50 lbs and work around industrial equipment.
• Ability to wear required PPE and work in a manufacturing environment.

• Experience operating furnaces, ovens, kilns, vacuum systems, or thermal processing equipment.
• Experience in aerospace, composites, ceramics, heat treatment, semiconductor, or other advanced manufacturing environments.
• Familiarity with process control systems, PLC interfaces, or industrial automation equipment.
• Experience performing basic equipment troubleshooting and maintenance activities.
• Forklift, crane, or rigging experience.

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

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.

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.

Castelion is an Equal Opportunity Employer. We are committed to providing equal…