Avionics Hardware Engineer

About Castelion

Castelion is redefining defense development through rapid iteration, aggressive testing, and modern commercial manufacturing at scale. We design, build, and test next-generation long-range strike weapon systems to give the United States and its Allies a decisive advantage and deter future conflicts.

Avionics Hardware Engineer

We are hiring Avionics Hardware Engineers to specialize in board‑level design, bring‑up, and testing across our avionics organization. This role is ideal for engineers with solid EE fundamentals who want hands‑on ownership of real flight hardware. Engineers in this role focus on schematic and PCB design, board bring‑up, and lab testing, and will grow into deeper avionics specialization over time.

Responsibilities

• Design and develop board‑level electrical hardware including schematic capture, PCB layout, and component selection
• Perform board bring‑up, validation, and debugging in the lab
• Test reference boards and early prototypes using standard lab equipment
• Support troubleshooting and root‑cause analysis of hardware issues
• Work with avionics, test, and manufacturing teams to iterate designs quickly
• Document designs, test results, and engineering changes clearly

Basic Qualifications

• Bachelor's degree in electrical engineering or related field
• Experience with PCB design tools (Altium preferred)
• Hands‑on experience with oscilloscopes, logic analyzers, and power supplies
• Strong understanding of core EE principles such as analog/digital circuits, power, signal integrity basics
• Comfortable working in a fast‑paced, highly collaborative environment

Preferred Qualifications

• Experience taking a PCB from concept through bring‑up and test
• Exposure to embedded systems or firmware interaction
• Familiarity with aerospace, automotive, robotics, or other high‑reliability hardware
• Basic scripting or programming experience (Python, C/C )

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 stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity.

ITAR Requirements

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

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.

All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.