Senior C​/C++ Software Development Engineer

At RTX, the world’s largest aerospace and defense company, we develop cutting‑edge solutions to protect our nation and allies. Join us as a Senior Software Engineer on the Patriot Software Team in Tewksbury, Massachusetts, where you will design and deliver real‑time C/C++ software for the world’s pre‑eminent air defence system.

• 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.
• Support light travel and off‑hours testing (2nd or 3rd shift) when required.
• Maintain exclusive on‑site presence in a SCIF environment.

• Typical requirement of a STEM degree and a minimum of 5 years of relevant experience.
• Active Secret security clearance.
• Experience developing complex systems and applications using C/C++.
• Experience with 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, especially in high‑concurrency and distributed systems.
• Experience with multithreading, memory management, and performance optimization.
• Experience with network communication protocols, shell scripting (tcsh, csh, bash), and development tools like Git and Clearcase.
• Experience with embedded real‑time operating systems (e.g., VxWorks, Integrity).
• Familiarity with Agile and Scrum methodologies.

Our values drive our actions:
Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation eligible – relocation assistance available.

Salary range: 86,800 USD – 165,200 USD. Hired applicants may be eligible for medical, dental, vision, life insurance, short‑term and long‑term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, employee scholar program, parental leave, paid time off, holidays, and incentive compensation programs, depending on the specific business unit and collective‑bargaining agreements.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend interview steps in‑person at one of our office locations, regardless of the role’s designation.

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, veteran status, or any other applicable protected class. RTX also provides affirmative action 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.