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Castelion · 14 hours ago

Systems Integration & Test Engineer (Flight Hardware)

Torrance, CA

Full-time

Onsite

Senior Level

Castelion is innovating in defense development and production, focusing on rapid testing and modern manufacturing strategies. They are seeking a Senior Integration & Test Engineer to validate and characterize control actuation systems for flight vehicles, leading the development of test infrastructure and executing test campaigns.

AerospaceGovernmentManufacturingMilitaryNational Security

No H1B

U.S. Citizen Only

Hiring Manager

Julee Y.

Responsibilities

Develop and execute comprehensive actuator test plans across component, subassembly, and integrated system levels

Build test fixtures, HIL environments, and automated test rigs to simulate flight conditions and actuator load profiles

Validate performance metrics such as torque, response time, bandwidth, power draw, and thermal behavior under nominal and fault scenarios

Instrument and log actuator tests for precise characterization and traceability

Lead root-cause investigations for performance anomalies or test failures

Collaborate with mechanical and control systems teams to refine actuator designs based on test results and failure data

Drive qualification testing and environmental testing campaigns (vibe, thermal, EMI) for flight hardware

Qualification

Testing actuatorsTest infrastructure developmentEmbedded control systemsData acquisition systemsC/C++ programmingPython programmingHigh commitmentSystems-level thinkingCommunicationCreative problem solving

Required

B.S. or M.S. in Mechanical, Mechatronics, Aerospace, or Electrical Engineering

Experience testing actuators, servos, or motion control systems for aerospace, automotive, robotics, or defense applications

Strong hands-on experience designing and running test setups involving motors, load cells, encoders, and motion control loops

Familiarity with embedded control systems and communication protocols (CAN, RS-422/485, SPI, Ethernet, Automotive Ethernet)

Proficient in using instrumentation and data acquisition systems (e.g., Python, C++, Protobuffs, custom scripts)

Demonstrated ability to work independently and lead multi-disciplinary integration efforts

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