Senior Principal Software Engineer

Date Posted:
2026-02-04
Country:
United States of America
Location:
US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG
Position Role Type:
Onsite
U.S. Citizen, U.S. Person, or Immigration Status Requirements:
The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance Type:
DoD Clearance: Secret
Security Clearance Status:
Active and existing security clearance required after day 1

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

The Raytheon team is looking for a Senior Software Engineer to support our radar programs and the Missile Defense Sensors (MDS) Software (SW) Department. The MDS SW mission is to provide world class Radar and Command and Control (C2) Software for our customers' wide array of Surveillance and Warning Systems. We align to the core Agile and DevSecOps principles of collaborative operation across the entire value stream, delivering high-frequency, high-quality deployments to our customers. We strive for technical excellence by drawing upon an experienced workforce whose knowledge base covers the complete spectrum of modern computing languages and platforms.

As a member of our team, you will design, develop, test, and release software products for one of our C2 programs. Some of the programs our department supports NASAMS (Raytheon) and Air Defense Operations Center (ADOC).

The ideal candidate will have a strong foundation in software design and development, an eagerness to learn, the ability to work 100% onsite and collaboratively with a team, and an interest in complex, real-time, safety-critical systems.

The job location for this opportunity is in Tewksbury, Massachusetts.

What You Will Do

• Work on an agile team responsible for developing and delivering software for one of the MDS Department's programs.

Specific responsibilities include:

• Design, develop, and test software based on software trouble reports in an agile, collaborative environment, delivering build to site multiple times a year.
• Participate in agile execution and continuous improvement.
• Work collaboratively with systems and SI&T engineers to analyze, implement, and test system modification requests to the existing system baseline.
• Assist and participate in the requirements, design, development and testing of real-time application software and tools, to include development of new work products or enhancement of existing applications and systems.
• Work on problems with open ended scope, schedule, and expectations.
• Follow established development practices and processes to maintain the configuration management of software products.
• Design, develop, and maintain software applications using C/C++ for complex systems and applications.
• Collaborate with cross-functional teams to define, design, and implement new features, ensuring system integration and scalability while utilizing new flows through the software factory.
• 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.
• Design and develop tooling to deploy software to various lab and customer site environments.
• 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++ technologies, especially in relation to complex systems and continuous delivery.

Qualifications You Must Have

• Typically requires a Bachelor's of Science Degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience.
• Experience developing software with agile methodology in a team-based environment.
• Experience with software development, test, and/or integration using C, C++, Java, or Ada.
• Ability to obtain U.S. government issued Interim Secret security clearance is required prior to start date.

Qualifications We Prefer

• Experience with CI/CD tools (Jenkins), configuration management tools (Git, Bitbucket, Artifactory), and data analysis tools (MATLAB, Python).
• Domain knowledge in Command and Control operations, Link16 tactical communication, HMI usability development, Mission Defense Planning, Simulation Modeling and Analysis and Threat Evaluation/Weapon Assignment processing.
• Knowledge of data structures and algorithms, memory management, and multithreaded applications.
• Well-developed communication, technical writing, oral presentation, and interpersonal skills.
• Exposure to radar software development and/or radar concepts.
• Proven experience with current Missile defense programs with specific experience in large, complex systems.
• Ability to work in a fast paced, dynamic environment with time-critical requirements.
• Experience contributing in a team environment for the purpose of developing creative solutions to technical problems.
• Ability to prioritize and make data-driven decisions.
• Ability to promote a culture of continuous learning, cross-team collaboration and training.
• Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work.
• Strong collaboration and communication skills.
• Requires expert or mastery level knowledge of work area, typically obtained through advanced education combined with experience.
• May have deep knowledge of project management. Advanced knowledge of related disciplines within work area and ability to identify links and potential impact on projects, programs or systems.

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation Eligible.

Learn More & Apply Now!

Please consider the following role type definition as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here:

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 132,400 USD - 251,600 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, 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. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company's performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act.

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