Principal Software C/C++ Engineer

Location US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3 300 Concord Date Posted 2026-06-18 Country United States of America Position Role Type Onsite U.S. Citizenship / Clearance 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. About RTX 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 opportunities 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. Role Summary We are seeking Senior Software Engineers to join our development team in Tewksbury, 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 provide practical solutions to difficult technical software problems, support multiple programs and platforms within a software product line, and work on real‑time software development, application software development, test and verification, data analysis, and software tools development. This role will be 100% on‑site in Tewksbury, Massachusetts. What You Will Do Assist and participate in the requirements, design, development and testing of real‑time embedded software, application software, and tools, including 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 STEM (Science, Technology, Engineering or Mathematics) and a minimum of 8 years of prior relevant experience unless prohibited by local laws/regulations. Experience with C++, C and/or Java. Ability to obtain and maintain an Interim Secret U.S. Government issued security clearance prior to start date; U.S. citizenship is required. Qualifications We Prefer Knowledge of data structures and algorithms, systems software design, operating systems, architectures, software development life cycle and processes. Experience 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 a desire to learn new technologies and tools. Able to travel domestic and international. Demonstrated ability to work effectively with coworkers and 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. Position Type & Role Information This position is classified as 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. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite roles, commuting to and from the assigned site is the employee’s personal responsibility. This position requires a security clearance. DCSA Consolidated Adjudication Services 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. Compensation & Benefits The salary range for this role is 107,500 USD - 204,500 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. Benefits Hired applicants may be eligible for benefits, including 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 on the specific business unit and whether 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 it is covered by a collective‑bargaining agreement. Payments under these programs are not guaranteed and depend on a variety of factors including 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. Application Window 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. Equal Opportunity Employer 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. Privacy Policy Click on this link to read the Policy and Terms #J-18808-Ljbffr