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Electrical Engineer Intern - Fall 2026 (Avionics)

Castelion · Los Angeles Metropolitan Area · 3 wk ago
On-siteEngineering$30/hrFull-time

About the role

Castelion is seeking motivated and talented Electrical Engineering Interns for Fall 2026. You'll help design, build, and test the electronics and hardware that drive our advanced missile systems. From architecture and schematic design to board bring-up and validation, you'll own real hardware projects alongside experienced hardware, firmware, and systems engineers. Your contributions will directly support rapid prototyping and real-world flight tests.

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

Requirements

  • 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)

Preferred Skills and Experience

  • Prior project or internship experience designing and testing PCBs 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

Leadership Qualities

  • Bias to Action and Creative Problem Solving: Desire and experience questioning assumptions in ways that lead to breakthrough ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. The ability to personally resolve minor issues in development without requiring significant support.
  • High Commitment, High Initiative: A genuine passion for Castelion's mission and consistently look for ways to contribute to the company's technical goals and prevent hardware blockers. Ability to work in a fast-paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.
  • Clear Communicator: Proactively communicates blockers. Trusted in previous roles to be the voice of the company with regulators, suppliers, gatekeepers, and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs, and verbal interactions are logical, drive clarity, and are detailed enough to eliminate ambiguity.

What You'll Gain

  • Real experience designing and testing electronics that power flight systems
  • Hands-on exposure to rapid prototyping, lab bring-up, and system integration
  • Mentorship from engineers who build mission-critical defense hardware
  • A clear path to develop into a future leader in advanced aerospace and defense engineering

ITAR Requirements

To conform to U.S. Government export regulations, the applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (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.

Why Castelion

At Castelion, you'll be part of a mission-driven company where every project matters. Our interns don't just observe, they contribute meaningfully to the success of our programs. This is a unique opportunity to work at the cutting edge of aerospace engineering while developing the skills and experience that will help you grow into a future leader in the field.

Pay

This internship is paid at an hourly rate of $30 per hour. Compensation may vary based on experience and education level.

Benefits

For non-local interns, housing or relocation stipends may be available to help offset temporary living expenses.

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