Avionics Technician Specialist

Castelion Corporation; Torrance (CA); On-site; USD 70,000 - 110,000; Full time

Job summary

Castelion is seeking an Avionics Technician Specialist in Torrance, CA to support development, integration, and testing of complex hardware. You will work closely with engineers to build test enclosures, cables, and harnesses, operate lab equipment, and execute procedures to ensure hardware meets specifications.

The role requires hands-on troubleshooting across electrical, electronic, and mechanical systems, strong ability to read schematics, and meticulous documentation.

Qualifications

• 3+ years hands-on experience in engineering test or related field.
• Experience troubleshooting electrical/electronic, mechanical, or electromechanical hardware.
• Ability to read and interpret electrical schematics, engineering drawings, wiring diagrams, and technical documentation.

Responsibilities

• Build and troubleshoot engineering development hardware and test fixtures.
• Execute test procedures, collect data, document results, and communicate anomalies to engineering teams.
• Operate and maintain laboratory equipment including oscilloscopes, DMMs, power supplies, and data acquisition systems.
• Develop, configure, and maintain test setups and instrumentation for electrical, mechanical, environmental, and system-level testing.
• Troubleshoot hardware using schematics, drawings, and fault-isolation techniques.

Skills

Troubleshooting hardware

Reading schematics

Lab equipment operation

Test data analysis

Electrical safety

Documentation

Communication

Education

Associate's/technical degree

Tools

Oscilloscopes

Digital multimeters

Power supplies

Electronic loads

Function generators

Data acquisition systems

Job description

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.

Avionics Technician Specialist

An Avionics Technician Specialist at Castelion provides hands‑on technical support for the development, assembly, integration, test, and troubleshooting of complex hardware and systems. This role works closely with engineers to build test enclosures and cables, operate laboratory equipment, execute test procedures, troubleshoot hardware, and collect and analyze test data. The Engineering Technician Specialist is expected to work independently, identify problems quickly, and help drive hardware from development through lessons learned on assembly, test, and integration.

Responsibilities:

• Build,modify, integrate, and troubleshoot engineering development hardware, test fixtures, cables, harnesses, instrumentation, and laboratory test setups.
• Support engineering development and test activities by executing test procedures, collecting data, documenting results, and communicating anomalies and observations to engineering teams.
• Operate andmaintainlaboratory equipment including power supplies, oscilloscopes, electronic loads, data acquisition systems, signal generators, environmental test equipment, and other specialized test equipment.
• Develop, configure, andmaintaintest setups and instrumentation to support electrical, mechanical, environmental, and system‑level testing.
• Troubleshoot electrical, electronic, mechanical, and electromechanical hardware using schematics, drawings, specifications, test equipment, and systematic fault‑isolation techniques.
• Provide redlines and as‑built feedback toengineeringfor improved designs.
• Work closely with engineers to develop practical test methods, fixtures, tooling, and instrumentation that enable rapid hardware development and iteration.
• Support hardware bring‑up, integration, qualification, and failure investigations byidentifyingissues, isolating root causes, and implementing or recommending corrective actions.
• Maintainaccurateconfiguration, calibration, and inventory records for laboratory equipment, test hardware, fixtures, cables, and other engineering assets.
• Coordinate laboratory activities and shared test resources to ensure equipment, facilities, and test setups are available when needed to support development schedules.
• Identifyopportunities to improve laboratory processes, test methods, equipmentutilization, safety, reliability, and turnaround time.
• Assistwith the design and fabrication of custom fixtures, tooling, and test equipment usingappropriate electrical, mechanical, and manufacturing techniques.
• Support safe laboratory operations by following established procedures for electrical safety, hazardous energy, ESD, high voltage, pressure systems, and other applicable hazards.
• Document test configurations, procedures, results, failures, and lessons learned in engineering databases and documentation systems.
• Support continuous improvement initiatives focused on test efficiency, hardware reliability, quality, safety, cost reduction, and overall engineering effectiveness.

Basic Qualifications

• Associate’s degree, technical degree, or equivalent technical training with 3+ years of relevant hands‑on experience; or 5+ years of relevant professional experience in engineeringtest, laboratory operations, manufacturing, electronics, mechanical systems, or a related technical field.
• Demonstrated hands‑on experience troubleshooting electrical, electronic, mechanical, or electromechanical hardware.
• Experienceoperatingcommon engineering laboratory and test equipment such as oscilloscopes, digital multimeters, power supplies, electronic loads, function generators, and data acquisition systems.
• Ability to read and interpret electrical schematics, engineering drawings, wiring diagrams, and technical documentation.

Preferred Skills and Experience

• Experience supporting aerospace, defense, automotive, electronics, robotics,orother complex hardware development programs.
• Experience with high‑voltage, high‑power, RF, digital, analog, or mixed‑signal electrical systems.
• Experience developing ormodifyingtest fixtures, harnesses, cables, instrumentation, and laboratory setups.
• Experience with automated test equipment and test software such as Python, LabVIEW, MATLAB, or similar tools.
• Familiarity with data acquisition systems, instrumentation, sensors, signal conditioning, and test automation.
• Experience troubleshooting hardware using oscilloscopes, logic analyzers, network analyzers, power analyzers, thermal cameras, or other specialized instrumentation.
• Experience with soldering, wire termination, crimping, cable fabrication, PCB rework, and electrical assembly.
• Experience with mechanical fabrication, machining, 3D printing, CAD, or fixture design.
• Strong ability to interpret technical documentation and translate engineering requirements into practical test setups.
• Highly self‑directed, adaptable, and capable of managing multiple priorities in a fast‑paced development environment.
• Strong analytical and problem‑solving abilities with an emphasis on speed, precision, and practical execution.
• Strong written and verbal communication skills with the ability to clearly document test results, hardware issues, and troubleshooting activities.
• Experience working with laboratory safety programs, ESD controls, hazardous energy, high‑voltage systems, and other engineering test hazards.

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 [e-mail]. 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.