Principal Software Development Engineer (C/C++)

Raytheon; Tewksbury (MA); On-site; USD 101,000 - 203,000; Full time

Job summary

A leading defense and aerospace company is seeking a Principal Software Development Engineer with expertise in C/C++. This role involves designing complex software applications, collaborating across teams, and maintaining high-performance coding standards. Candidates must possess a strong STEM background, significant experience in software development, and a valid security clearance.

Benefits

Relocation assistance available

Medical, dental, vision, and life insurance

401(k) match

Flexible work schedules

Employee assistance program

Paid time off and holidays

Parental leave

Qualifications

• Minimum of 8 years of experience required.
• Experience in embedded systems and real-time systems preferred.
• Ability to obtain and maintain secret U.S. security clearance.

Responsibilities

• Design, develop and maintain software applications using C and C++.
• Collaborate with teams to implement new features and ensure integration.
• Troubleshoot and optimize existing code for performance.

Skills

C/C++

Java

Unix/Linux

Data Structures and Algorithms

Multithreading

Problem Solving

Communication

Education

Degree in Science, Technology, Engineering or Mathematics (STEM)

Tools

Git

Embedded RTOSs (e.g., VxWorks, Integrity)

Job description

Principal Software Development Engineer (C/C++)

Principal Software Development Engineer (C/C++)

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Location:

MA133: Tewksbury, Ma Bldg 3 Concord 50 Apple Hill Drive Concord - Building 3, Tewksbury, MA, 01876 USA

Date Posted:

2025-06-19

Country:

United States of America

Location:

MA133: Tewksbury, Ma Bldg 3 Concord 50 Apple Hill Drive Concord - Building 3, Tewksbury, MA, 01876 USA

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:

DoD Clearance: Secret

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 Principal 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 8 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

Learn More & Apply Now!

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 CAS), 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

The salary range for this role is 101,000 USD - 203,000 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. 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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Seniority level

• Seniority level

  Not Applicable

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Defense and Space Manufacturing

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