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# Senior C/C++ Software Development Engineer

- **Company:** RTX
- **Location:** Concord, NH, United States
- **Experience:** Expert
- **Salary:** $86,800.0 - $165,200.0
- **Contract:** Contract
- **Skills:** Agile Methodology, Software Applications, Bash Shell, C++ (Programming Language), IBM Rational ClearCase, Data Structures, Software Debugging, Distributed Systems, Memory Management, Network Service, Performance Tuning, Scrum Methodology, Real-Time Operating Systems, Software Tools, Shell Script, Software Engineering, Systems Architecture, Systems Integration, VxWorks, Multithreading, Enterprise Software Applications, Real Time Systems, Git, Solid Principles, Software Version Control
- **Published:** July 9, 2026
- **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-MA-TEWKSBURY-TB3--50-Apple-Hill-Dr--CONCORD-BLDG-Tewksbury-Tb3-300-Concord/Senior-C-C---Software-Development-Engineer_01858671

## About the Role

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, Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date, * 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.

 * Active Secret security clearance
 * Experience in developing complex systems and applications using C/C++
 * Experience in embedded systems, real-time systems, or large-scale applications.
 * Experience in a Unix/Linux operating system, * 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).
 * Experience with version control systems (e.g., Git).
 * Experience with software development methodologies (Agile, Scrum, etc.).

## Description

* Design, develop, and maintain software applications using C and C++ for complex real-time 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.
 * Light travel and off-hours testing (2nd or 3rd shift) may occasionally be required.
 * This position requires exclusive onsite presence.


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