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# Senior Principal Software Engineer - Avionics Simulation (Onsite)

- **Company:** RTX
- **Location:** Cedar Rapids, IA, United States
- **Experience:** Expert
- **Salary:** $132,400.0 - $251,600.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, C Sharp (Programming Language), Software Debugging, Graphical User Interface, Scrum Methodology, Scripting, Programming Languages
- **Published:** October 26, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3468458191&tx=JP2721FFG&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

* Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience.
 * Experience with C/C++ programming languages.
 * Experience with Python scripting.
 * Experience with Agile Development Framework (Scrum, Sprints, etc.).

Qualifications We Prefer:

 * Strong written and oral communication skills.
 * Experience with Graphical User Interface (GUI) design/implementation.
 * Experience with C# programming language.
 * Familiarity with migrating an application between OS and HW architectures.
 * Earned Value Management experience.

## Description

* Design, develop, and test applications to simulate the behavior of avionics sensors to support the development and testing of Collins Avionics products.
 * Aid the development team in the debugging of laboratory issues to determine root cause and propose potential solutions to the discovered problems.
 * Effectively interacts and networks with teammates, management, and customers.
 * Support the Program Lead(s) with budget and schedule data for the CSE work on a given program to help ensure the successful completion of a Collins Avionics program.
 * Work with a team of dedicated engineers to help shape the future of the avionics simulation platform.
 * 5-10% travel as needed.