[Hiring] Principal Software Engineer -Core Systems & Libraries @RTX

Role Description

We’re looking for a Principal Software Engineer who enjoys solving complex problems and delivering high-impact solutions in safety-critical environments. In this role, you will architect and develop core software components, libraries, and tools that enable scalable, certifiable avionics platforms. You’ll work across the full software lifecycle, partnering with cross-functional teams to deliver robust solutions aligned with civil and military certification standards.

• Lead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements.
• Drive technical direction and execution across development and verification activities for safety-critical software (DO-178).
• Define and manage software requirements, decomposition, and traceability across complex systems.
• Develop and verify software using modern C++ and object-oriented design principles.
• Own and produce DO-178 certification artifacts, including DAL-A deliverables.
• Lead and support certification efforts, including engagement with customers and regulatory authorities.
• Conduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle.
• Collaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectives.
• Willing and able to travel as required (domestic and international <10%).

Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience.
• U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.
• Proven experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environment.
• Demonstrated ability to lead technical execution of projects, including customer engagement and presenting to senior stakeholders.
• Hands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts).
• Experience working across cross-functional engineering and program teams to deliver complex, integrated solutions.

Requirements

• Experience with C++ and VxWorks.
• Experience writing High-Level and Low-Level Requirements.
• Experience writing Test Cases and Automated Test Procedures.
• Experience with Civil Certification DO-178 – DAL A preferred.
• Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.
• Familiar with revision control concepts and tools (e.g. GIT, Subversion, JIRA).

Benefits

• Medical, dental, vision, life insurance.
• Short-term disability, long-term disability.
• 401(k) match, flexible spending accounts.
• Flexible work schedules, employee assistance program.
• Employee Scholar Program, parental leave.
• Paid time off, and holidays.