Senior Software Engineer (Mission Systems)

Prattwhitney; McKinney (TX); On-site; USD 86,800 - 165,200; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) match

Employee Scholar Program

Job summary

Prattwhitney in McKinney, Texas, is seeking a Systems Software Engineer to apply systems thinking to complex software engineering challenges. You will develop software requirements, collaborate with multidisciplinary teams, and implement real-time software solutions.

The ideal candidate holds a Bachelor’s degree in STEM and has at least 5 years of relevant engineering experience, especially with C++. Benefits include a competitive salary and comprehensive health coverage.

Qualifications

• Bachelor’s degree in Science, Technology, Engineering, Mathematics, or an advanced degree.
• Minimum 5 years of prior engineering experience.
• Experience integrating real-time software applications and system interfaces.

Responsibilities

• Apply systems thinking to software engineering challenges.
• Develop Software Requirements Specifications and collaborate with teams.
• Test and debug embedded real-time software.

Skills

Software architecture for complex system integration

C++ programming on real-time operating systems

Experience with Agile Scrum development practices

Problem-solving and proactive ownership mindset

Collaboration with systems and software engineering

Education

Bachelor’s degree in STEM

Tools

Cameo

Enterprise Architect

MS Visio

Git

Job description

Date Posted: 2026-06-08 • Country: United States of America • Location: McKinney, Texas • Role Type: Onsite. U.S. citizenship is required. A U.S. government issued Secret clearance is required and must be maintained.

What You Will Do

• Apply systems thinking to software engineering challenges including CONOPS development, V-model alignment, specification tree analysis, and system decomposition.
• Perform high‑level software 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 such as PDR and CDR.
• Mentor less experienced engineers.
• Occasional business travel (up to 5%) may be required.

Qualifications You Must Have

• Bachelor’s degree in Science, Technology, Engineering, Mathematics, or STEM, or an advanced degree with at least 3 years of relevant experience.
• Minimum 5 years of prior engineering experience (or 3 years with advanced degree).
• Experience with software architecture for complex system‑of‑systems and subsystem interface design, and software system integration and test.
• Experience with engineering and modeling tools such as Cameo or Enterprise Architect and MS Visio, and familiarity with MOSA standards including OMS and AMS‑GRA.
• Experience developing, testing, and integrating real‑time software applications in C++ (or related languages) on Linux, VxWorks, or other real‑time operating systems.
• Product‑domain experience in at least one of: RF or EO/IR Sensors, Electronic Warfare Effectors, Communications, Multi‑domain Mission Systems.
• Ability to obtain and maintain a U.S. government issued Secret security clearance.

Preferred Qualifications

• 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.
• Strong problem‑solving, proactive ownership mindset, and ability to work effectively in fast‑paced, dynamically changing environments.
• Experience working in system integration lab (SIL) environments with physical hardware, test benches, and simulators.
• Experience with Agile Scrum development practices.
• Familiarity with DevSecOps pipelines, 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.

What We Offer

• Competitive salary range of $86,800 - $165,200 USD.
• Medical, dental, vision, life insurance, short‑term and long‑term disability coverage.
• 401(k) match, flexible spending accounts, and employee assistance program.
• Employee Scholar Program, parental leave, paid time off, and holidays.
• Potential annual short‑term and long‑term incentive compensation programs, subject to performance and business unit.

We are 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.