Electrical Engineer Intern - Fall 2026 (Avionics)

Electrical Engineer Intern - Fall 2026 (Avionics) Torrance, California, United States $ 35.00 - 35.00 (US Dollar) Apply for Position Or refer someone Job Openings Electrical Engineer Intern - Fall 2026 (Avionics) About the job Electrical Engineer Intern - Fall 2026 (Avionics) About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts. Electrical Engineer Intern - Fall 2026 (Avionics) 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. You won't be doing throwaway work. Your contributions will directly support rapid prototyping and real-world flight tests. Key Responsibilities Take ownership of circuit board design from specification and architecture through schematic, layout collaboration, bring-up, and validationDesign and integrate analog and digital circuits, processors, sensors, and power electronicsCollaborate cross-functionally with PCB layout, firmware, mechanical, systems, and test teamsRapidly iterate hardware designs as system requirements matureDocument design decisions, calculations, schematics, validation results, and learnings clearlySupport system bring-up, debug, and test campaigns in the lab and on hardware-in-the-loop benches Basic Qualifications Currently pursuing a BS or MS in Electrical Engineering, Computer Engineering, Mechatronics, or a related fieldStrong understanding of analog and digital circuit design principlesExperience with PCB component selection and schematic designFamiliarity with PCB bring-up and debuggingSome exposure to MATLAB, Python, C/C++, or other tools for modeling and analysisBasics 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 PCBAs for aerospace, robotics, automotive, or other high-reliability applicationsFamiliarity with mixed-signal design, power electronics, or RF systemsStrong interest in working in a startup environment with high-impact projects. You'll leave with Real experience designing and testing electronics that power flight systemsHands-on exposure to rapid prototyping, lab bring-up, and system integrationMentorship from engineers who build mission-critical defense hardwareA clear path to develop into a future leader in advanced aerospace and defense engineering Leadership Qualities Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through 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 successful candidate will have 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 voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with...