Senior Principal Software Engineer - Avionics Simulation (Onsite)

Date Posted: 2026-07-01 Country: United States of America Location: US-IA-CEDAR RAPIDS-182 ~ 1100 Cimmie Ave Ne ~ BLDG 182 Position Role Type: Onsite 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. What You Will Do: 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. Qualifications You Must Have: 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. What We Offer: Benefits:  Some of our competitive benefits package includes:     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!    This role may be eligible for relocation. Learn More & Apply Now! Collins Aerospace makes modern flight possible. Of course, that wouldn’t be possible without the capabilities and technologies of our organization, as well as our engineers – a highly skilled, accomplished network that spans more than 180 sites, 24 countries and 6 Strategic Business Units (SBUs). Our industry-leading experts are setting the standards for the aerospace industry and paving the way for the future. But as new challenges present themselves, we need fresh, creative and motivated minds to overcome these hurdles, help us break barriers and achieve new levels of innovation. Do you have what it takes to join a global organization that doesn’t shy away from big opportunities? If so, we invite you to join our ranks and create the next generation of aerospace technologies. Together, we will nurture an engineering culture that values intellectual curiosity, risk takers and integrity. A place where we will challenge ourselves, our teams, and the status quo and where we will work to find a way – the right way – to achieve what others can only dream of. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.  At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.    Apply now and be part of the team that’s redefining aerospace, every day.  As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 132,400 USD - 251,600 USD. The salary range provided is a good faith estimate representative of all experienc