Date Posted: 2025 10 01 Country: United States of America Location: FL410: Largo FL MFG 7887 Bryan Dairy Road , Largo, FL, 33777 USA Position Role Type: Onsite 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: Secret Current Raytheon Company, Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in engineering and proposal teams to successfully execute programs and prepare responsive proposals aimed at making the world a safer place. Come support those who provide us with all the freedoms we enjoy. Our commitment to providing an environment that supports innovation, teamwork, and growth opportunities are primary reasons engineers come to work at RTX. The Protected Communication Systems (PCS) Software (SW) Engineering Department has an opportunity for a talented Senior Principal Software Engineer to join our team. What You Will Do ⢠Participate on collaborative, cross disciplined integrated product teams, often employing agile software development techniques ⢠Responsible for the full lifecycle of product development, from architecture and design, through integration, test, and field support ⢠Work and learn the highest software engineering process maturity level as recognized by the Software Engineering Institute Qualifications You Must Have ⢠Experience in Software Engineering including working all phases of the software development lifecycle ⢠Prior experience in a technical or team leadership role, such as SW Architect, SW Lead etc. ⢠Experience with Software Development Using C/C , JAVA, JavaScript HTML5, and/or CSS ⢠Experience with full stack development (GUI, back end services, middleware) ⢠Familiarity with developing applications using communication protocols (e.g. TCP/IP, UDP, HTTP, HTTPS, RTP, SIP) ⢠Working knowledge of Windows, Linux, VxWorks or other Real time operating systems ⢠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 ⢠Active and transferable SECRET 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 Qualifications We Prefer ⢠Experience with scripting languages such as Python ⢠Experience with DevOps, Jenkins and automated testing ⢠Exposure to Model Driven Development ⢠Experience with real time operating systems (RTOS), embedded programming, processor/board architecture and design ⢠Understanding of standard system engineering design artifacts such as Use Cases and SysML diagrams ⢠Applied experience in Unified Modeling Language (UML) and Object Oriented Analysis and Design (OOA/D) ⢠Familiarity with Agile lifecycle process including Scrum, Continuous Integration, and Test Driven Development Methodologies ⢠Working experience with Microservice Architectures and Containerized Applications ⢠Experience with software integration on custom hardware 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,â¯critical illnessâ¯insurance, group legal, ID theft protection ⢠Birth, adoption, parental leave benefits ⢠Ovia Health, fertility, and family planning ⢠Adoption Assistance â¯â¯â¯â¯â¯â¯â¯â¯ ⢠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 ⢠This position is eligible for relocation assistance⯠⢠And more!⯠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 â 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 ensure the role type (defined below) is appropriate for your needs before applying to 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 â 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 The salary range for this role is 124,000 USD 250,000 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 RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry leading businesses â Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.