Senior Software C/C++ Engineer

Date Posted:

2026-04-02

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 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 Senior Software Engineers to join our development team in Marlborough, Massachusetts. All teams develop software in a variety of languages including C++, C, and several others. Candidates can expect to work on many if not all the phases of the software development life cycle.

In this position, you will be responsible for providing practical solutions to difficult technical software problems. You can expect to support multiple programs and multiple platforms within a software product line. Software Engineering positions include working on a variety of different tasks including real-time software development, application software development, test and verification, data analysis, software tools development, and many others.

This role will be 100% on-site in Marlborough, Massachusetts.

What You Will Do

• Assist and participate in the requirements, design, development and testing of real-time embedded software, application software, and tools, to include development of new work products or enhancement of existing applications and systems.

• Design, code, test, integrate, and document software solutions.

• Participate in internal review of software components and systems.

• Collaborate with project managers and other professionals within Engineering.

• Follow established development practices and processes to maintain the configuration management of software products.

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 with C++, C, and/or Java.

• The ability to obtain and maintain a U. S. government issued Interim Secret security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

• Knowledge of data structures and algorithms, systems software design, operating systems, architectures, software development life cycle and processes.

• Experience in software development, and with Windows and Linux Operating Systems, GIT, Jira, Jenkins, Perl, Bash, and Kornshell.

• Experience developing software in a team-based development environment, preferably Agile/SCRUM, DevOps and test automation.

• Strong problem-solving and communication skills, including ability to produce technical documentation, and the desire to learn new technologies and tools.

• Able to travel domestic and international.

• Demonstrated ability to work effectively with coworkers.

• Demonstrated ability to work with colleagues who represent multiple work and conflict resolution styles.

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: Employe