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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:** July 1, 2026
- **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-IA-CEDAR-RAPIDS-182--1100-Cimmie-Ave-Ne--BLDG-182/Senior-Principal-Software-Engineer---Avionics-Simulation--Onsite-_01856627

## About the Role

This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of "U.S. Person" go here: https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62, * 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.


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