> Markdown version of [/jobs/ext/658799-senior-software-development-engineer](https://www.wearedevelopers.com/jobs/ext/658799-senior-software-development-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Development Engineer - **Company:** RTX - **Location:** Concord, NH, United States (Remote available) - **Experience:** Expert - **Salary:** $86,800.0 - $165,200.0 - **Contract:** Contract - **Skills:** Java (Programming Language), Agile Methodology, Software Applications, Bash Shell, C++ (Programming Language), IBM Rational ClearCase, Code Review, Data Structures, Software Debugging, Distributed Systems, Memory Management, Hardware Design, Network Service, Object-Oriented Software Development, Performance Tuning, Scrum Methodology, Real-Time Operating Systems, Software Tools, Shell Script, Software Engineering, Systems Integration, VxWorks, Multithreading, Enterprise Software Applications, Real Time Systems, Git, Solid Principles, Software Version Control - **Published:** June 26, 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-Software-Development-Engineer_01854282 ## 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, Typically requires a bachelor's in science, Technology, Engineering, or Mathematics (STEM) and a minimum of 2 years of experience. Proven experience in developing complex systems and applications using C/C++, ADA, Java or other object-oriented programming language. Experience in a Unix/Linux operating system. Experience leading team of engineers Experience with requirement analysis and writing Experience developing hardware-in-loop simulators for embedded systems 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 in embedded systems, real-time systems, or large-scale applications. 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.)., Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work. Typically requires: A University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years experience Engineering/Other Technical Positions: 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. 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. ## Description We are seeking a skilled Senior Software Development Engineer with a focus on developing Simulation applications 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., This position is in Tewksbury, Massachusetts. Living in Massachusetts means you'll have easy access to the ocean and locations of historical significance. You can enjoy varied outdoor activities ranging from hiking and camping to cross-country skiing and snowmobiling. Massachusetts is recognized as one of the best states to call "home." We Are Raytheon! Please enjoy the following video: We Are Raytheon Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: 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. Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader. Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee's personal responsibility. ## Related Videos - [Why Your Best Mediors Never Become Seniors (And How to Fix It)](https://www.wearedevelopers.com/videos/2108-why-your-best-mediors-never-become-seniors-and-how-to-fix-it) - [Old tools, new tricks](https://www.wearedevelopers.com/videos/1916-old-tools-new-tricks) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Your next 10x engineer isn't in your city. Refactor accordingly.](https://www.wearedevelopers.com/videos/100103-your-next-10x-engineer-isn-t-in-your-city-refactor-accordingly) - [MCP doesn’t suck — your agent does](https://www.wearedevelopers.com/videos/100202-mcp-doesn-t-suck-your-agent-does) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [How Much Does a Software Engineer Make? Realistic Software Engineering Salaries](https://www.wearedevelopers.com/magazine/425-how-much-does-a-software-engineer-make-realistic-software-engineering-salaries)