Senior Software Engineer - Core Systems & Libraries (Onsite)

Date Posted: 2026-05-20 Country: United States of America Location: US-IA-CEDAR RAPIDS-124 ~ 400 Collins Rd NE ~ BLDG 124 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Security Clearance Type: None/Not Required Security Clearance Status: Not Required   At RTX, the world 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.   Join the Collins Aerospace Core Systems & Libraries team and help build the software backbone that powers modern   aircraft .   We’re looking for a  Senior 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.   This is a unique opportunity to influence system-level architecture, drive open-architecture innovation, and help shape the technologies defining the future of aerospace.   This role will be located onsite in  Cedar Rapids, Iowa   What You Will Do   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   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 5 years prior relevant experience   or   an Advanced Degree in a related field and minimum 3 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 tasks, including customer engagement and presenting stakeholders   Hands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts)   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, and comprehensive di