Senior Software Development Engineer (Onsite)

Date Posted:

2026-06-24



Country:

United States of America



Location:

US-MA-TEWKSBURY-TB3 ~ 50 Apple Hill Dr ~ CONCORD BLDG, Tewksbury Tb3 300 Concord



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 a skilled Senior Software Development Engineer with a focus on developing complex systems in C/C++, Java, and Python, and integrating emerging AI-enabled technologies.  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 onsite in Tewksbury, Massachusetts as part of the Portfolio, Strategy, Resources, and Growth (PSRG) Execution Support Team.

What You Will Do:

• Design, develop, and maintain software applications using C/C++, Java, and Python for complex systems and applications, with opportunities to apply AI/ML capabilities.

• Collaborate with cross-functional teams to define, design, and implement new features, ensuring system integration and scalability while incorporating AI-assisted development pipelines.

• 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.

• 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++, Java, Python technologies, and AI-related fields relevant to complex systems and continuous delivery.

• This position requires 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.

• 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 a U.S. government issued security clearance is required. 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, with exposure to AI/ML frameworks considered a plus.

• 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.

• Experience leading small projects/efforts.

• Proven experience in developing automation pipelines using industry tools such as Jenkins and Git, with additional value placed on AI-assisted automation capabilities.

• Experience in scripting languages such as Python, Perl, or Bash

• Familiarity with software development methodologies (Agile, Scrum, etc.).

• Experience providing technical guidance/mentorship to junior engineers.

What We Offer:

• 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.

Learn More & Apply Now!

• RTX solves some of the toughest challenges in aerospace and defense. That requires expansive thinking and bold innovation.

• We embrace individuality to fuel opportunity for our employees, our customers, and our communities. We work toward progress, knowing that a more inclusive world is critical to our mission. Not just in this moment, but always.

• 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), 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: https://www.state.gov/m/ds/clearances/c10978.htm #LI-RH2

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 86,800 USD - 165,200 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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