Software Engineer I

About the role

• Date Posted: 2026-11-12
• Country: United States of America
• Location: US-MA-MARLBOROUGH-MA2 ~ 1001 Boston Post Rd ~ BLDG 2
• 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.

This is your opportunity to join the Receiver/ Exciter & Processing Architecture (REPA) Department as a Software Engineer I. The department's primary goal is to design, develop, and support land and sea-based radar systems. We are looking for a unique engineer to enhance the sustainability of our current radar products. The ideal candidate will have experience in legacy radar hardware and software technologies, with an interest and ability to transition these products to current technologies while maintaining and troubleshooting and patching our deployed systems.

What You Will Do

• Provide expertise in modern C++ development and hands-on experience across Linux, MATLAB, DevOps tooling, and Python.
• Work within Linux to develop C/C++ and MatLab tools to build and test the DREXs going into the next generation of Radars.
• Work closely with hardware and firmware engineers to work out technical challenges and deliver advanced capabilities.
• This 1st shift role will be 100% onsite and based in Marlborough, MA.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and less than 2 years of prior experience.
• Experience in C++ (C++14/17/20), including object-oriented design and performance optimization.
• Experience developing in Linux environments (e.g., command-line workflows, build systems, debugging tools).
• Experience with DevOps concepts and tools (e.g., GitLab CI, Jenkins, Docker, Kubernetes, automated build/test pipelines).
• Experience with MATLAB (e.g., algorithm development, modeling, numerical analysis).
• The ability to obtain and maintain an Interim Secret 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.

Qualifications We Prefer

• Experience with Python (e.g., scripting, test automation, data analysis).
• Experience with radar signal processing, RF systems, or software-defined radio (SDR).
• Experience with tools like GNU Radio, USRP platforms, or similar SDR frameworks.
• Experience in digital signal processing, real-time systems, or embedded development.
• Experience in high-throughput, low-latency system design.
• Ability to work effectively in a collaborative, technical engineering environment.
• Active / Existing Secret U.S. Security Clearance.

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.
• This position offers relocation based on candidate eligibility.

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.
• Clearance Information: 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.

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 57,200 USD - 108,800 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.