Senior Software Engineer – Embedded (Onsite)

Prattwhitney; McKinney (TX); On-site; USD 87,000 - 165,000; Full time

Job summary

RTX in McKinney, Texas is seeking a software engineer to support DoD programs, contributing to the full software development life cycle from concept to integration and maintenance.

You will work in a multidisciplinary team, apply object-oriented design and C++ development on Linux or RTOS environments, and collaborate with systems engineers.

Onsite role with occasional travel; U.S. citizenship and ability to obtain Secret clearance required.

Qualifications

• Requires STEM degree with at least 5 years of relevant engineering experience.
• Experience developing on Linux or RTOS (VxWorks) and in C/C++.
• Experience with scripting languages (Shell/Perl/Python) and Git/GitLab.

Responsibilities

• Support software development life cycle across concept to maintenance.
• Collaborate with Systems Engineers to design end-user oriented solutions.
• Develop, test, and integrate real-time software in C++.
• Onsite role in McKinney, TX with travel up to 5–10%.

Skills

C++ development

C programming

Python scripting

Shell/Perl scripting

Linux

VxWorks/RTOS

Object-oriented design

Git

GitLab

CUDA

Education

STEM degree

Tools

Git

GitLab

Linux tools

Job description

Date Posted: 2026-09-09 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.

What You Will Do

• Supports all aspects of a software development life cycle as members of a multi-disciplined team, including supporting new and legacy military and commercial programs from concept and requirements, to design, development, integration, test, and potentially subsequent maintenance tasking.
• Uses and provides creative solutions to complex technical system and software integration problems.
• Works closely with Systems Engineers to design ideal solutions with the end user and operational needs in mind.
• Onsite role in McKinney, Texas, with local residency or relocation required. This position will require occasional business-related travel, up to 5-10%.
• The ability to obtain and maintain a Secret with Special Access Program U.S. government issued security clearance after start is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications

You Must Have

• Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of prior relevant engineering experience.
• An advanced degree in a related field may be substituted for an additional 2 years of experience.
• Software development experience, including: Developing on Linux, VxWorks, or other Real Time Operating Systems.
• Applying object-oriented programming and C++ design paradigms.
• Coding in C, C#, Java or closely related software languages.
• Developing, testing, and integrating real-time software applications written in C++.
• Experience in computer scripting language such as Shell/Perl/Python.
• Experience working with multi-discipline team(s).
• 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.

We Prefer

• Experience working in lab environments with physical hardware (e.g., test benches, simulators).
• Ability to quickly understand and navigate complex systems and established code bases.
• Experience with product development utilizing the Scrum techniques of the Agile software development process.
• Experience with DevSecOps pipeline implementation and utilization, including Static Code Analysis, Automated Build, and Automated Test techniques using continuous integration/continuous delivery with Test-Driven Development approach.
• Hands-on experience with Git for version control and GitLab for repository management.
• Ability to manage multiple priorities.
• Experienced in developing in CUDA to accelerate compute-intensive workloads on Nvidia GPUs.
• Active and transferable U.S. government issued Secret security clearance.

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value:

• Safety
• Trust
• Respect
• Accountability
• Collaboration
• Innovation

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, 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, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. 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.

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.

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.

Privacy Policy and Terms. RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.