Senior Avionics Systems Engineer

Castelion Corporation•Torrance, CA

About The Position

We are seeking a Senior Avionics Systems Engineer to define and deliver the avionics architecture for Castelion's long-range hypersonic strike vehicles. This role is responsible for the overall integration of the vehicle's avionics systems, ensuring that power, control electronics, communications, sensors, embedded computing, and flight software function as a cohesive flight system. You will work hands-on with multidisciplinary engineering teams to architect, integrate, test, and validate flight electronics from concept through flight test in a fast-paced, hardware-driven environment.

Requirements

Bachelor's, Master's, or PhD in Electrical Engineering or related field
8+ years of experience designing and integrating avionics or other high-reliability embedded electronic systems for aerospace or defense applications
Strong background in avionics system architecture, power distribution, communications interfaces, and embedded hardware integration
Experience leading the development and integration of complex avionics systems from concept through qualification and flight testing
Experience with schematic capture and PCB design using Altium Designer or equivalent ECAD tools
Strong understanding of analog, digital, power, and embedded electronics design principles
Familiarity with common aerospace interfaces and communication protocols (e.g., SPI, I²C, UART, CAN, Ethernet, RS-422/485, LVDS, or similar)
Experience with hardware integration, system-level debugging, and root cause analysis in laboratory and flight test environments
Strong understanding of EMI/EMC, grounding, shielding, and electrical reliability considerations for aerospace systems
Strong problem-solving mindset, thriving in a fast-paced, hardware-rich, high flight cadence environment
U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
Ability to obtain and maintain a U.S. government–issued security clearance is required.

Responsibilities

Define and maintain the avionics system architecture for flight vehicles, including power distribution, communications, grounding, interfaces, and system integration
Lead the integration of avionics subsystems, including flight computers, sensors, power electronics, control electronics, RF systems, flight termination systems, and propulsion electronics
Develop system-level requirements, interface definitions, wiring architectures, and integration documentation
Work closely with electrical, mechanical, software, GNC, propulsion, and manufacturing teams to ensure seamless integration of vehicle subsystems
Lead system-level hardware integration, bring-up, debugging, and troubleshooting during development and flight vehicle assembly
Define electrical design standards, component selection guidelines, and best practices for high-reliability flight electronics
Support design reviews and make system-level technical trades to optimize performance, reliability, manufacturability, and testability
Develop and execute integration, qualification, and flight test plans, translating results into system-level improvements
Mentor electrical engineers across multiple disciplines and contribute to best practices in avionics system architecture and integration
Partner closely with program leadership to make technical trades aligned with mission success

Benefits

Meaningful long-term equity
Four (4) weeks of paid time off
Ten (10) company-paid holidays
Comprehensive health benefits - including 100% employee-covered medical and strong dependent coverage
Dental and vision plans
Paid parental leave
$100 monthly fitness stipend
Onsite EV charging
Catered meals
Company-covered food during high-demand periods
Fully stocked kitchen