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# Principal Engineer, Software Engineering

- **Company:** RTX
- **Location:** Cedar Rapids, IA, United States
- **Experience:** Expert
- **Salary:** $135,803.0 - $204,500.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Microsoft Windows, Applications Architecture, C++ (Programming Language), Software Debugging, Electronic Data Processing, Embedded C, Embedded Software, Human-Computer Interaction, Python (Programming Language), Microsoft Visual Studio, Commercial Software, Simulink, Software Engineering, Software Requirements Analysis, Systems Integration, Information Technology, DO-178B
- **Published:** October 22, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3462146741&tx=JP8781FFQ&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Must possess at least a bachelor's degree or its equivalent in Computer Science, Electrical Engineering or related field and at least 8 years of progressive experience as a Software Engineer or related role. In the alternative, must possess at least a master's degree or its equivalent in Computer Science, Electrical Engineering or related field and at least 5 years of experience as a Software Engineer or related role would be acceptable.
 * Must possess at least 5 years of experience with RTCA DO-178C Certification, DO-330, 331, 332, FAA SOI, TCR Audits, TSO Certification for safety critical airworthy embedded systems.
 * Must possess at least 5 years of experience with defining, validating system/software requirements, application architecture prototyping, low level design and development.
 * Must possess at least 5 years of experience with ARINC communications including ARINC 429, 661, 664 and 615A.
 * Must possess at least 5 years of experience with Embedded C programming, debugging, troubleshooting hardware-software system integration.
 * Must possess at least 5 years of experience in developing avionics software with Visual Studio, VAPs graphics, Human Machine Interface design, Python & Model based development using MATLAB Simulink.
 * Non-US Person - Must be authorized to work in the U.S. without the company's immigration sponsorship now or in the future. The company will not offer immigration sponsorship for this position. The company will not seek an export authorization for this role.

## Description

* Responsible for applications including Primary Flight Displays, Maps, Windows Manager and Video.
 * Maintain applications and work with Model Based software development with Simulink and testing/verification using python and harness environments using C/C++.
 * Architect, design, develop and test embedded software in avionics products.
 * Collaborate on software requirements and design. Implement and test software.
 * Solve complex software and systems problems. Design and implement build procedures that are used to support hardware and software product development and use.
 * Design, develop, document, test and design control and diagnostic systems that contain logical and mathematical solutions.
 * Conduct multidisciplinary research and collaborate with equipment designers in the planning, design, development and utilization of electronic data processing systems for product and commercial software.
 * Determine end-user needs by analyzing system capabilities to resolve problems on program intent, output requirements and input data acquisition.