Senior NDE Level II 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 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.

Senior NDE Level II Technician

Castelion is seeking a Senior NDE Level II Technician to support the inspection, manufacturing, and quality assurance of solid rocket motor systems used in the development of long-range hypersonic strike vehicles. This is a full-time position located at our Torrance, CA facility.

As a Senior NDE Level II Technician, you will work closely with Engineering teams in NDE, Quality, and Manufacturing to perform non-destructive evaluation of critical aerospace hardware throughout the manufacturing and assembly process. The position will have a strong focus on Digital Radiography (DR), Computed Tomography (CT), Phased Array Ultrasonic Testing (PAUT), Magnetic Particle (MT), and Visual Testing (VT)/Weld Inspection, ensuring components and welded assemblies meet applicable engineering drawings, specifications, approved inspection procedures, and acceptance criteria.

You will perform in-process and final inspections, interpret and evaluate inspection results within Level II certification authority, accurately document findings, and identify nonconforming conditions that could affect product integrity or performance. You will also collaborate with NDE Level III personnel and engineering teams to resolve technical inspection issues, support corrective actions, and continuously improve inspection and manufacturing processes.

This role is critical to ensuring the quality, reliability, and integrity of flight-critical hardware while supporting Castelion's fast-paced development and production environment.

Responsibilities

• Contribute to projects aimed at increasing operational efficiencyat the site

• Conduct in-process, final, and post-fabrication inspections to verify product quality and conformance.

• Perform Digital Radiography (DR), Computed Tomography (CT), Phased Array Ultrasonic Testing (PAUT), Magnetic Particle (MT), and Visual Testing (VT)/Weld Inspection on aerospace components, assemblies, and fabricated hardware in accordance with approved NDE procedures and applicable requirements.

• Inspect welds for size, profile, contour, alignment, surface condition, workmanship, and visible discontinuities.

• Interpret and evaluate inspection results in accordance with applicable engineering drawings, specifications, procedures, and acceptance/rejection criteria.

• Read and interpret drawing weld symbols, manufacturing instructions, and technical documentation.

• Set up, standardize, verify, and operate applicable NDE and inspection equipment within the scope of Level II qualification.

• Utilize weld gauges, borescopes, magnification equipment, precision measurement tools, and other inspection equipment as required.

• Accurately document inspection results and maintain required inspection records, traceability, and quality documentation.

• Identify, document, and communicate nonconforming conditions to NDE Level III, Quality, Engineering, Welding, and Manufacturing teams.

• Collaborate with NDE Level III on complex indications, technical issues, inspection requirements, and development or improvement of NDE techniques.

• Support the inspection and evaluation of flight-critical aerospace hardware throughout manufacturing, assembly, and integration.

• Assist with troubleshooting, root-cause investigations, corrective actions, and continuous improvement activities related to NDE and product quality.

• Maintain inspection equipment and ensure required equipment checks, calibration status, and documentation are current.

• Support development and maturation of NDE inspection processes as manufacturing and production capabilities expand.

• Maintain compliance with applicable safety, quality, customer, and regulatory requirements.

• Work effectively in a fast-paced manufacturing environment while maintaining a high level of inspection accuracy, quality, and attention to detail.

Basic Qualifications

• High school diploma or GED required; technical, vocational, or trade school education preferred.

• Minimum of 3 years of hands-on NDE inspection experience, preferably within aerospace, defense, aviation, or another highly regulated manufacturing environment.

Preferred Skills and Experience

• Current or previous NDE Level II qualification/certification in one or more NDE Method/Techniques of Digital Radiography (DR), Computed Tomography (CT), Phased Array Ultrasonic Testing (PAUT), Magnetic Particle (MT), and Visual Testing (VT)/Weld Inspection in accordance with an employer-based written practice or applicable industry standard.

• Demonstrated experience performing visual and weld inspections on fabricated and welded components.

• Working knowledge of welding processes, weld joint configurations, weld symbols, common weld discontinuities, and applicable acceptance/rejection criteria.

• Ability to read and interpret engineering drawings, technical specifications, weld symbols, inspection procedures, and work instructions.

• Experience using weld gauges, precision measurement tools, borescopes, magnification equipment, and other visual inspection equipment.

• Working knowledge of NDE equipment setup, calibration/standardization, system verification, and inspection documentation requirements.

• Ability to independently interpret and evaluate inspection results within the scope of Level II qualification.

• Working knowledge of inspection documentation, product traceability, nonconformance reporting, and quality-system requirements.

• Ability to clearly communicate inspection findings and nonconforming conditions to NDE Level III, Quality, Engineering, and Manufacturing personnel.

• Strong attention to detail and commitment to inspection accuracy, product quality, and safety.

• Ability to work effectively in a fast-paced aerospace manufacturing and production environment.

• Must be able to meet applicable vision examination and NDE certification requirements.

Benefits And Perks

• Employee Equity: Meaningful equity for all full-time employees - share value has increased 150x in three years
• Personal Time Off: Four (4) weeks of paid time off to unplug, reset, and come back sharp—velocity matters, burnout doesn't
• Company Paid Holidays: Ten (10) company paid holidays
• Medical: We offer plans at 100% employee covered and 80% of dependent coverage
• Dental & Vision: We cover 90% employees and 80% for dependents to ensure you and your family have access to quality preventive and ongoing care
• FSA/HSA: To support long-term health and financial resilience, we offer FSA and HSA options that allow employees to set aside pre-tax dollars for eligible medical and dependent care expenses
• Retirement: 401k plan offered to support long term financial growth along side high-impact, high-velocity work
• Paid Parental Leave: We support growing families with meaningful time to bond and recover. Birthing parents are eligible for up to 10 weeks of paid leave, while non-birthing parents may take up to 4 weeks of paid leave. This time can be used for pre-natal care, pregnancy, childbirth, and related medical needs—ensuring every parent has the support they need during this important life moment.8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees
• Meals & Catering: Frequently catered lunches and team meals, plus company-covered meals when extra time or effort is required
• Snacks & Beverages: Fully stocked kitchen with unlimited snacks and drinks to keep you fueled throughout the day
• Performance & Fitness: $100 monthly fitness stipend to support peak performance and health, both inside and outside of work
• EV Charging: Onsite electric vehicle charging available for employees

Physical Demands

• Must be willing to work extended hours and/or weekends as needed

• Must be able to travel up to 30%
• Must be able to lift more than 50lbs

ITAR Requirements

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

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. Failure to obtain or maintain any required clearance or authorization may result in reassignment, leave, or separation from employment, consistent with business needs and applicable law.

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.

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.