Principal Software Engineer Onsite

Date Posted

2026-08-31Country:

United States of America Location:

US-AL-HUNTSVILLE-401 ~ 401 Jan Davis Dr NW ~ JAN DAVIS 401 Position Role Type:

Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type:

DoD Clearance: Secret Security Clearance Status:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

As a Senior Software Engineer, you will support one or more phases of the System Development Life Cycle (SDLC) - requirements, design, development using C++, test, validation, and maintenance.

This is an onsite role based in Huntsville, AL.

What You Will Do

• Design, develop, test, and maintain high‑performance software applications using C++
• Work within Unix/Linux operating systems, including shell scripting, debugging, and system-level programming
• Implement scalable and maintainable software solutions following best practi