Software Engineer II (Mission Systems)
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Benefits offered by this job
Job summary
RTX in McKinney, Texas, is seeking a Software Engineer II to join our Mission Systems Engineering Team. You will apply systems thinking to design real-time embedded software for defense applications.
The role requires a Bachelor’s degree in STEM and 2+ years of experience in C++ on Linux or VxWorks, with a track record in system-of-systems integration and design reviews.
US citizenship and ability to obtain a DoD Secret clearance are required; travel up to 5% may be needed.
Qualifications
- Bachelor’s degree in STEM and minimum 2 years of relevant experience.
- Experience developing real-time software in C++ or similar and Linux/VxWorks.
- Product-domain experience in RF/EO/IR sensors or related fields.
Responsibilities
- Apply systems thinking to software challenges including CONOPS and architecture.
- Design, develop, and refine interfaces for hardware and software.
- Develop Software Requirements Specifications (SRS).
- Collaborate with cross-disciplinary teams on design exploration.
- Architect, implement, test, and debug embedded real-time software.
- Participate in design reviews (PDR/CDR).
- Mentor less experienced engineers.
- Occasional travel up to 5%.
Skills
Education
Tools
Job description
Date Posted: 2026-08-27 Country: United States of America Location: US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1.
At RTX, the world’s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world‑class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. Raytheon has an opportunity for a Software Engineer II to join our Mission Systems Engineering Team in the DFW area. We’re seeking a highly capable Senior Software Engineer with strong systems thinking, deep software architecture experience, and domain knowledge in advanced defense or aerospace systems. This role is ideal for someone who thrives in a fast‑paced environment, collaborates across disciplines, and can drive software design at the system‑of‑systems level.
- Apply systems thinking to software engineering challenges including CONOPS development, V‑model alignment, specification tree analysis, and system decomposition.
- Perform software high‑level design at the System‑of‑Systems level and design, develop, and refine subsystem and platform interfaces for both hardware and software.
- Develop Software Requirements Specifications (SRS).
- Collaborate with Systems Architects, Technical Leads, Senior Technical Fellows and cross‑discipline teams (Systems Engineering, Algorithms, Firmware and Hardware) on design exploration and problem solving.
- Architect, implement, test, and debug embedded real‑time software in heterogeneous hardware, firmware, and software systems.
- Participate in major design reviews including PDR and CDR.
- Mentor less experienced engineers.
- Occasional business travel may be required, up to 5%.
- Typically requires a Bachelor’s degree in Science, Technology, Engineering, Mathematics, or STEM and a minimum of 2 years of relevant experience.
- Experience developing, testing, and integrating real‑time software applications in C++ or related software languages and experience with Linux, VxWorks, or other real‑time operating systems.
- Product‑domain experience in at least one of the following areas: RF or EO/IR Sensors, Electronic Warfare Effectors, Communications, Multi‑domain Mission Systems.
- The ability to obtain and maintain a U.S. government issued security clearance is required.
- U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
- Familiarity with software architecture for complex system‑of‑systems, subsystem interface design, and software system integration and test.
- Experience with engineering and modeling tools (Cameo or Enterprise Architecture and MS Visio), along with familiarity with MOSA standards including OMS and AMS‑GRA.
- Demonstrated collaboration with Systems, Software, Firmware, and Hardware engineering teams.
- Ability to develop and present complex technical material at design reviews such as PDR and CDR.
- Ability to work effectively in fast‑paced, dynamically changing environments.
- Proactive problem‑solving and strong ownership mindset.
- Experience working in system integration lab (SIL) environments with physical hardware including test benches and simulators.
- Experience with Agile Scrum development practices.
- Familiarity with DevSecOps pipelines including static analysis, automated build and test, CI/CD, and test‑driven development.
- Hands‑on experience with Git for version control and GitLab or Artifactory for repository management.
- Active and transferable U.S. government issued Secret security clearance with special program access.
Salary range for this role is 68,900 USD - 131,100 USD. The salary range provided is a good faith estimate representative of all experience levels.
- Medical insurance
- Dental insurance
- Vision insurance
- 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
- Holidays
Onsite role in McKinney, Texas, with local residency or relocation required. Relocation Offered Based On Eligibility.
The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Active and transferable U.S. government issued Secret security clearance with special program access.
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.
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.
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.
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