Senior Software Development Engineer (Onsite)

Date Posted:

2026-06-24

Country:

United States of America

Location:

US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3 300 Concord

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 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.

We are seeking a skilled Senior Software Development Engineer with a focus on developing complex systems in C/C++, Java, and Python, and integrating emerging AI-enabled technologies.  The ideal candidate will have a passion for creating high-performance applications and will be involved in all stages of the software development lifecycle. You will work onsite in Tewksbury, Massachusetts as part of the Portfolio, Strategy, Resources, and Growth (PSRG) Execution Support Team.

What You Will Do:

• Design, develop, and maintain software applications using C/C++, Java, and Python for complex systems and applications, with opportunities to apply AI/ML capabilities.

• Collaborate with cross-functional teams to define, design, and implement new features, ensuring system integration and scalability while incorporating AI-assisted development pipelines.

• Troubleshoot, debug, and optimize existing code for performance and efficiency in complex environments.

• Write and maintain comprehensive documentation for software applications, including system architecture and design specifications.

• Develop automation pipelines to streamline the integration of upstream software releases and automate configuration management.

• Participate in code reviews and ensure adherence to coding standards and best practices.

• Stay current with industry trends and advancements in C/C++, Java, Python technologies, and AI-related fields relevant to complex systems and continuous delivery.

• This position requires onsite presence.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.

• Experience in developing complex systems and applications using C/C++, Java or other object-oriented programming language.

• Experience in embedded systems, real-time systems, or large-scale applications.

• Experience in a Unix/Linux operating system.

• 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.

Qualifications We Prefer:

• Active Secret security clearance.

• Strong understanding of data structures, algorithms, and software design principles, particularly in high-concurrency and distributed systems, with exposure to AI/ML frameworks considered a plus.

• Experience with multithreading, memory management, and performance optimization in complex environments.

• Experience with Network Communication Protocols, Shell Scripting (tcsh, csh, bash), software development tools like Git/Clearcase, software debuggers, and using embedded RTOSs (e.g. VxWorks, Integrity).

• Excellent problem-solving skills and attention to detail.

• Strong communication and teamwork skills.

• Experience leading small projects/efforts.

• Proven experience in developing automation pipelines using industry tools such as Jenkins and G