Principal Software Engineer -Core Systems & Libraries (Remote)

Date Posted: 2026-07-27 Country: United States of America Location: US-IA-CEDAR RAPIDS-124 ~ 400 Collins Rd NE ~ BLDG 124 Position Role Type: Remote U.S. Citizen, U.S. Person, or Immigration Status Requirements: 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 Security Clearance Type: None/Not Required Security Clearance Status: Not Required 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.   Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical   expertise , we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.   We’re  looking for a  Principal Software Engineer  who enjoys solving complex problems and delivering high-impact solutions in safety-critical environments.    In this role, you will architect and develop core software components, libraries, and tools that enable scalable, certifiable avionics platforms.  You’ll  work across the full software lifecycle, partnering with cross-functional teams to deliver robust solutions aligned with civil and military certification standards.    What You Will Do Lead 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) Define and manage software requirements, decomposition, and traceability across complex systems Develop and verify software using modern C++ and object-oriented design principles Own and produce DO-178 certification artifacts, including DAL-A deliverables Lead and support 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 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 Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Proven experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environment Demonstrated ability to lead technical execution of projects, including customer engagement and presenting to senior stakeholders Hands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts) Experience working across cross-functional engineering and program teams to deliver complex, integrated solutions Qualifications We Prefer 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). What We Offer   Medical, dental, and vision insurance Three weeks of vacation for newly hired employees Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option Tuition reimbursement program Student Loan Repayment Program Life insurance and disability coverage Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection Birth, adoption, parental leave benefits Ovia Health, fertility, and family planning Adoption Assistance          Autism Benefit Employee Assistance Plan, including up to 10 free counseling sessions Healthy You Incentives, wellness rewards program Doctor on Demand, virtual doctor visits Bright Horizons, child and elder care services Teladoc Medical Experts, second opinion program And more!  Learn More & Apply Now! Avionics delivers advanced cockpit displays, vision systems, an