Principal Software Engineer - Onsite
Listed on 2026-03-11
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Software Development
Software Engineer, C++ Developer
Location
US-RI-PORTSMOUTH-PS1 ~ 1847 W Main Rd ~ NIMITZ BLDG
Date PostedCountryUnited States of America
Position Role TypeOnsite
U.S. Citizen, U.S. Person, or Immigration Status RequirementsActive 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 TypeDoD Clearance:
Secret
Active and existing security clearance required on day 1
Job OverviewWe are seeking a skilled Principal Software Engineer to join our Radar Digital Product Line team. 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 Portsmouth, Rhode Island.
What You Will Do- Develop robust and scalable software in C++ running on Linux or UNIX operating systems using Agile development methods
- Design, implement, test, and maintain radar software applications, while ensuring system integration and scalability.
- Create/update MATLAB scripts for use in verifying software requirements
- Tackle difficult problems and successfully deliver results on schedule
- Participate in design/code/test 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 and continuous delivery.
- Typically requires a bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of experience.
- Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
- Experience in software design, integration and test utilizing C / C++ in a Real-time, multi-threaded software development environment.
- Experience in a Unix/Linux operating system.
- Experience with multithreading, memory management, or performance optimization in complex environments.
- Experience with data structures, algorithms, and software design principles, particularly in high-concurrency and distributed systems.
- Familiarity with software development methodologies (Agile, Scrum, etc.).
- Software development experience in a DoD environment.
- Experience with Network Communication Protocols, Shell Scripting (ksh, csh, bash, Perl), software development tools like Git/Clearcase, software debuggers (GDB), LINUX/UNIX text editors (vi/Gvim/Emacs), and MATLAB.
- Experience leading small projects/efforts.
- Experience providing technical guidance/mentorship to junior engineers.
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.
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://(Use the "Apply for this Job" box below)..htm
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 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.
Hired applicants may be eligible for benefits, including but not limited to,…
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