Senior Software Development Engineer 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. We are seeking a skilled Senior Software Development Engineer with a focus on developing complex systems in C/C++. 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 in Tewksbury, Massachusetts as part of the Patriot Software Development Team. What You Will Do: Design, develop, and maintain software applications using C and C++ for complex systems and applications. Collaborate with cross-functional teams to define, design, and implement new features, ensuring system integration and scalability. 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. 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. Light travel and off hours testing (2nd or 3rd shift) may occasionally be required. This position requires exclusive 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. Proven 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 an interim secret U.S. 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: Active Secret security clearance. Strong understanding of data structures, algorithms, and software design principles, particularly in high-concurrency and distributed systems. 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. Familiarity with version control systems (e.g., Git). Familiarity with software development methodologies (Agile, Scrum, etc.). 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 Relocation assistance available. RTX is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, VA. Whether you're just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance, and child/adult backup care. The salary range for this role is 82,000 USD - 164,000 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. 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.