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# Senior Software Engineer - Core Systems & Libraries (Hybrid)

- **Company:** RTX
- **Location:** Huntsville, AL, United States
- **Experience:** Expert
- **Salary:** $86,800.0 - $165,200.0
- **Contract:** Permanent contract
- **Skills:** JIRA, Automation of Tests, C++ (Programming Language), Middleware, Object-Oriented Software Development, Software Engineering, Software Requirements Analysis, Subversion, Test Case, VxWorks, Safety Critical Systems, Git, C++14, Software Version Control
- **Published:** October 15, 2026
- **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-AL-HUNTSVILLE-382--420-Jan-Davis-Dr--DAVIS-382/Senior-Software-Engineer---Core-Systems---Libraries--Hybrid-_01881948

## About the Role

* Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience.
 * Experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environment.
 * Experience leading technical execution of tasks, including customer engagement and presenting stakeholders., * Experience with C++ and VxWorks.
 * Experience writing High-Level and Low-Level Requirements.
 * Experience writing Test Cases and Automated Test Procedures.
 * Experience with Civil Certification DO-178 - DAL A preferred.
 * Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.
 * Familiar with revision control concepts and tools (e.g. GIT, Subversion, JIRA).
 * Hands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts)

## Description

* Develop the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements
 * Drive technical direction and execution across development and verification activities for safety-critical software (DO-178)
 * Develop software requirements, decomposition, and traceability across complex systems
 * Develop and verify software using modern C++ and object-oriented design principles
 * Develop DO-178 certification artifacts, including DAL-A deliverables
 * Perform certification efforts, including engagement with customers and regulatory authorities
 * Conduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle
 * Collaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectives
 * Willing and Able to travel as required (domestic and international <10%).

What You Will Learn

 * Gain hands-on experience with cutting-edge and emerging technologies that are shaping the future of avionics and aerospace systems
 * Build end-to-end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety-critical systems
 * Develop a deep understanding of software certification (DO-178) and how world-class avionics products meet rigorous regulatory standards
 * Learn how to design, scale, and sustain software product lines that support a wide range of platforms and global customers