Date Posted: 2025 10 21 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 technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market. You will be a member of a multi disciplinary group of System, Hardware and Software Engineers. We are a growing business developing new products in an aggressive and competitive market. The new designs are exciting and technically challenging. The Protected Communication Systems (PCS) team is hiring a Senior Principal Systems Engineer to support programs for our US military and various international customers, keeping the world safe from foreign threats. PCS supports multiple Collins contracts and is seeking to fill roles across several open contracts â our goal is to align each new hire with a position that best suits their skills and allows for career growth. As a Senior Principal Systems Engineer, you will be a leader within an Integrated Program Team (IPT) developing architecture, refining requirements, guiding system development and integration, supporting test development, and working closely with our customers and suppliers to ensure we deliver world class solutions. What You Will Do ⢠Organize and lead the development of full lifecycle solutions from CONOPS to Validation while collaborating with the customer, subcontractors, and executive leadership ⢠Guide the development of new technologies to support business capture ⢠Identify technology gaps in existing systems and solutions ⢠Own the preparation, cost, and schedule of Design Reviews as well as Development, Integration, Dry Run, and Formal Qualification Testing ⢠Influence decision makers with recommended courses of action across complex problems ⢠Review and document major changes in systems or processes to solve complex problems Qualifications You Must Have ⢠Experience leading multidisciplinary teams of design professionals including Electrical, Mechanical, Software, Test, Logistics and other System Engineers ⢠Experience in at least three of the following areas: Systems Engineering Test Engineering Software Engineering Mechanical Engineering Electrical Engineering ⢠Experience across the Systems Engineering V with an emphasis on development, integration, and test ⢠Expertise in Secure Voice and VTC Communication 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 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 ⢠Familiarity with embedded systems, microcontrollers, and communication protocols (e.g., I2C, SPI, UART) ⢠Experience with voice communication systems, including VoIP (Voice over IP) protocols like SIP, RTP and SRTP ⢠Familiarity with multicast networking (e.g., IGMP, PIM) for efficient data transmission in communication systems ⢠Strong understanding of networking principles, including TCP/IP, UDP, and network troubleshooting tools (e.g., Wireshark) ⢠Basic understanding of firmware development (VHDL) and/or software development (C/C , Python) ⢠Knowledge of military specifications (e.g., MIL STD 810, MIL STD 461) for designing rugged and reliable systems ⢠Proficiency in system design tools (e.g., MATLAB, Simulink, or equivalent) ⢠Experience leading discussions with customers and vendors/subcontractors ⢠A current active Top Secret Clearance 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 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 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.