Principal Software Engineer in Test Equipment - Onsite in McKinney, TX

Are you ready to shape the future of aerospace and defense technology? RTX Corporation is looking for a driven and innovative Principal Software Engineer to join our cutting-edge test equipment team in McKinney, Texas. This is an exceptional opportunity for a talented professional to work on high-stakes, mission-critical systems that push the boundaries of what is possible. As a key member of our onsite engineering group, you will dive deep into the development and maintenance of complex test environments, ensuring that our advanced hardware meets the rigorous standards required to keep our nation safe and our technology ahead of the curve.

In this role, you will be more than just an engineer; you will be a problem-solver tasked with bridging the gap between sophisticated software architecture and real-world hardware performance. We are seeking a proactive collaborator who is eager to tackle technical challenges, work alongside industry-leading experts, and take ownership of critical test infrastructure. If you are a U.S. citizen with an active or transferable Secret security clearance—or the ability to obtain one—this is your chance to launch a high-impact career at a global leader in technology. Join us in McKinney, where your contributions will directly influence the next generation of defense innovation.

Requirements

• Proficiency in at least one modern programming language (Python, JS, Java, etc.).
• Understanding of software development life cycles and version control (Git).
• Strong problem-solving skills and attention to technical detail.
• Familiarity with cloud platforms (AWS, Azure, or Google Cloud) is a plus.
• Ability to work in an agile, fast-paced environment.
• Degree in Computer Science or equivalent practical experience.