Principal Software Engineer - Core Systems & Libraries (ONSITE)

Company: RTX
Location: Cedar Rapids
Posted on: April 1, 2026

Job Description:

Date Posted: 2026-03-30 Country: United States of America Location: US-IA-CEDAR RAPIDS-121 ~ 350 Collins Rd NE ~ BLDG 121 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 Become part of the growing Collins Aerospace Core Systems and Libraries team! This position is for a highly experienced and motivated Principal Software Engineer that will be involved in the architecture, design, implementation, verification, and integration of a wide variety of next generation software products that incorporate open architecture design concepts with civil certification. As an engineer this organization, you will be employing best practice design methodologies and utilizing emerging technologies to develop the next generation of Avionics Products, truly defining the future of aerospace. The ideal candidate will have a good understanding of software development practices, military/commercial certification, and experience leading execution teams. This is an onsite position based in Cedar Rapids, Iowa. What You Will Do: Defining architecture for software components, applications, libraries, and tooling to avionic system’s requirements. Recommend and lead functional strategies to advance the software discipline and products. Understand product certification requirements and establish DO-178 planning documents for development projects. Requirements capture, decomposition, and traceability. Software component design and/or verification. C++ Object Oriented Development. Creation of DO-178 DAL-A certification artifacts for avionics software products. Conduct and/or participate in peer reviews throughout product lifecycle. Lead teams through certification reviews with customers and/or authorities. Communicate with a wide variety of individuals including Engineering, Program Management, internal leadership and customers What You Will Learn: You will learn the technologies of today and tomorrow which we count on to maintain world leadership in the avionics industry. You will learn all phases of the hardware product life cycle from requirements through to verification, while employing the company engineering processes to produce high quality products. You will learn the requirements for product certification required by federal agencies. You will learn how to establish and maintain a software product line with a broad base of customers. Education & Experience 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. Qualifications You Must Have: Experience with I/O Architecture, Libraries, and Tooling in an aerospace context. Experience leading technical projects including customer interaction and briefing leadership. Experience with DO-178 certification activities for software developments. Experience with interfacing with the wide spectrum of individual contributors to program management and customers. Willingness to travel (domestic and international 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 digital solutions for global government, commercial and business aviation customers. We provide connectivity and managed data services to ensure safety and seamless communication for passengers, crews, and militaries, from aircraft and airports to air traffic management. Join us in creating solutions that connect the world, one flight at a time. Start your application today. 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. Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings. 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 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

Keywords: RTX, Dubuque , Principal Software Engineer - Core Systems & Libraries (ONSITE), Engineering , Cedar Rapids, Iowa