Senior Avionics Systems Engineer

Castelion Corporation; Torrance (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Paid time off

Company holidays

Health benefits

Parental leave

Fitness stipend

EV charging

Catered meals

Stocked kitchen

Company meals during peak

Job summary

Castelion Corporation is seeking a Senior Avionics Systems Engineer to define and deliver the avionics architecture for long-range hypersonic strike vehicles. The role oversees power, control electronics, communications, sensors, embedded computing, and flight software to create a cohesive flight system.

You will lead hands-on integration, testing, and validation from concept to flight test. The candidate will mentor engineers, work across multidisciplinary teams, and drive system-level design

Qualifications

• Bachelor's, Master's, or PhD in Electrical Engineering or related field.
• 8+ years of avionics or high-reliability embedded systems experience.
• Strong background in architecture, power distribution, and interfaces.
• Experience with flight software integration and testing.
• Familiar with SPI, I2C, UART, CAN, Ethernet, LVDS, etc.

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.

Skills

Avionics architecture

Embedded hardware

PCB design

Systems engineering

EMI/EMC knowledge

Troubleshooting

Software integration

Leadership

Education

Bachelor's in Electrical Engineering

Master's in Electrical Engineering

Tools

Altium Designer

ECAD tools

Lab equipment

Job description

Senior Avionics Systems Engineer

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.

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

Basic Qualifications

• 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

Benefits And Perks

• All full‑time employees are granted meaningful long‑term equity, sharing in the company's significant growth trajectory.
• four (4) weeks of paid time off
• ten (10) company‑paid holidays
• comprehensive health benefits - including 100% employee‑covered medical and strong dependent coverage, along with 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 to stay fueled throughout the day

While this position does not currently require a U.S government‑issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government‑issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Affirmative Action/EEO Statement

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.