Development Test Engineer

Castelion CorporationTorrance, CA
Onsite

About The Position

The Development Test Engineer owns the planning, execution, and analysis of tests that turn designs into flight-ready hardware. This role sits at the center of engineering, manufacturing, and operations—translating requirements into real-world validation through benchtop, environmental, subsystem, and vehicle-level testing. You will design test hardware, write procedures, run tests, break things early, and close the loop back into design with clear data and recommendations. This is a hands-on role for engineers who thrive in fast-paced, ambiguity-heavy environments and believe the fastest way to learn is to test real hardware.

Requirements

  • Bachelors degree in Mechanical, Electrical, Aerospace, or related engineering field
  • 3+ years of hands-on development and test experience (academic, industry, or both)
  • Experience planning and executing hardware tests from concept through report-out
  • Proficiency with test instrumentation and lab equipment (DAQs, oscilloscopes, power supplies, sensors)
  • Ability to design and fabricate simple test fixtures and GSE (CAD + shop familiarity)
  • Strong debugging, troubleshooting, and root-cause analysis skills
  • Comfortable working across disciplines in high-ownership environments
  • Willingness to support extended hours, weekends, travel, and on-site operations during critical test campaigns
  • Operates with high ownership, bias to action, attention to detail, and a test-driven engineering mindset
  • Comfortable working in fast-moving environments where hardware is the source of truth

Nice To Haves

  • Aerospace, missile, launch vehicle, space, or defense hardware testing
  • Environmental testing: vibration, thermal-vacuum, thermal cycling, shock
  • Test automation and data analysis using Python, MATLAB, or similar
  • Flight test, range operations, or hardware-in-the-loop (HIL) experience
  • Familiarity with requirements verification, qualification evidence, and failure tracking
  • Hands-on machining, wiring, soldering, or rapid prototyping experience

Responsibilities

  • Own development and qualification testing for avionics, mechanisms, propulsion, structures, and integrated vehicle subsystems
  • Design and build test fixtures, ground support equipment (GSE), and instrumentation for benchtop, environmental, and system-level tests
  • Author test plans, procedures, and reports aligned with program requirements and qualification intent
  • Execute vibration, thermal, shock, EMI/EMC, functional, and performance testing
  • Instrument hardware and vehicles with sensors (strain, temp, pressure, accel, current/voltage) and DAQ systems
  • Lead anomaly detection, root-cause analysis, and corrective action closure
  • Partner closely with design engineering to feed test results back into rapid design iteration
  • Support integration operations, range testing, and flight test campaigns as needed
  • Maintain rigorous configuration control, data management, and test documentation
  • Improve test infrastructure, automation, and data quality to increase test cadence and learning velocity

Benefits

  • Long-term stock incentives
  • Comprehensive medical, vision, and dental insurance
  • Four weeks of paid time off per year
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