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Posted 69 days agoVerified live 2d ago

Electrical Engineer Intern - Fall 2026 (Avionics)

Brief overview

Torrance, CAIn-person
UndergradOr in progress
Analog circuit designDigital circuit designPCB component selectionSchematic designPCB bring-upPCB debuggingMATLABPythonC/C++Serial communication protocols - CANSerial communication protocols - EthernetSerial communication protocols - SPISerial communication protocols - I2CMixed-signal designPower electronicsRF systemsHigh initiative

About the company

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Job description

Summary

Castelion is a company focused on innovative defense development and production. They are seeking motivated Electrical Engineering Interns for Fall 2026 to design, build, and test electronics for advanced missile systems, contributing to real hardware projects alongside experienced engineers.

Responsibilities

  • Take ownership of circuit board design from specification and architecture through schematic, layout collaboration, bring-up, and validation
  • Design and integrate analog and digital circuits, processors, sensors, and power electronics
  • Collaborate cross-functionally with PCB layout, firmware, mechanical, systems, and test teams
  • Rapidly iterate hardware designs as system requirements mature
  • Document design decisions, calculations, schematics, validation results, and learnings clearly
  • Support system bring-up, debug, and test campaigns in the lab and on hardware-in-the-loop benches

Skills

  • Currently pursuing a BS or MS in Electrical Engineering, Computer Engineering, Mechatronics, or a related field
  • Strong understanding of analog and digital circuit design principles
  • Experience with PCB component selection and schematic design
  • Familiarity with PCB bring-up and debugging
  • Some exposure to MATLAB, Python, C/C++, or other tools for modeling and analysis
  • Basics of serial communication protocols (CAN, Ethernet, SPI, I2C, etc.)
  • U.S. Person status required (due to ITAR regulations)
  • Prior project or internship experience designing and testing PCBAs for aerospace, robotics, automotive, or other high-reliability applications
  • Familiarity with mixed-signal design, power electronics, or RF systems
  • Strong interest in working in a startup environment with high-impact projects

Qualifications

Must Haves

  • Currently pursuing a BS or MS in Electrical Engineering, Computer Engineering, Mechatronics, or a related field
  • Strong understanding of analog and digital circuit design principles
  • Experience with PCB component selection and schematic design
  • Familiarity with PCB bring-up and debugging
  • Some exposure to MATLAB, Python, C/C++, or other tools for modeling and analysis
  • Basics of serial communication protocols (CAN, Ethernet, SPI, I2C, etc.)
  • U.S. Person status required (due to ITAR regulations)

Nice to Haves

  • Prior project or internship experience designing and testing PCBAs for aerospace, robotics, automotive, or other high-reliability applications
  • Familiarity with mixed-signal design, power electronics, or RF systems
  • Strong interest in working in a startup environment with high-impact projects

Benefits

  • Housing or relocation stipends may be available to help offset temporary living expenses
  • Mentorship from engineers who build mission-critical defense hardware
  • A clear path to develop into a future leader in advanced aerospace and defense engineering

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