Principal Engineer, Software Engineering (Remote)

Date Posted: 2026-10-02

 Country: United States of America

 Location: US-IA-REMOTE

 Position Role Type: Remote

 U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

 Security Clearance Type: Secret - Current

 Security Clearance Status: Active and existing security clearance required on day 1 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. At Collins Aerospace, we don’t just build technology—we engineer mission success. Our Ground Software team is dedicated to enhancing training capability and realism, enabling U.S. warfighters and international partners to “train like you fight.” Our engineering team develops cutting-edge products for networking, and command and control applications supporting threat and weapon simulations. Our complex systems allow military pilots to practice combat maneuvers in the air without the hazards or expense of firing real weapons. We design secure Air Combat Maneuvering Instrumentation (ACMI) systems, taking them from concept to accreditation, factory production and installation. Here, you’ll collaborate with top-tier engineers and industry experts, leveraging advanced technologies to push the boundaries of what’s possible. Whether you're building on trusted systems or breaking ground on new innovations, your contributions will directly support mission-critical operations across the globe. If you're passionate about solving complex challenges, excited by the idea of working on systems that truly matter, and driven to grow alongside some of the brightest minds in the field—we want you on our team. Join Collins Aerospace Mission Systems and help us connect the battlespace of tomorrow! What You Will Do • Lead the design, development, and testing of cutting-edge software in an agile, collaborative environment • Demonstrate critical thinking skills, the ability to thrive in small, empowered teams, and an intense desire to directly enable our customer’s success • Act as a technical mentor and coach, delegating tasks and providing guidance to junior and mid-level engineers. • Drive the resolution of complex software trouble reports, leveraging debugging tools to quickly identify and fix software defects while optimizing code for performance. • Provide technical leadership in an agile execution environment, driving continuous improvement initiatives and ensuring adherence to industry best practices. • Drive project success by directly contributing to requirements, implementation, and test development • Work collaboratively with multiple engineering disciplines to analyze, implement, and test system modification requests to the existing system baseline Qualifications You Must Have • Experience with software development, test, and/or integration using Java, C++, or C# • Experience in agile software development methodologies, such as scrum, SAFe, or DevSecOps • Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance • 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 Qualifications We Prefer • Experience with Python is a plusExperience with Windows and Linux development environments • Experience with multithreading • Experience with networking and communications protocols • Experience with CI/CD tools and infrastructure such as Jenkins, Git, Bitbucket • Experience with containerized applications such as Docker 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! • Eligible for relocation Learn More & Apply Now!Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. * Please consider the following role type definitions as you apply for this role. 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. Employee Referral Eligible #MISENG 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 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms