Senior Principal Systems Engineer- Infrastructure (Onsite)

Date Posted: 2026-07-02 Country: United States of America Location: US-TX-RICHARDSON-C17 ~ 1717 Cityline Dr ~ CITYLINE C17 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Top Secret Security Clearance Status: Active and existing security clearance required after day 1 At RTX, the world 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. We are seeking a Senior Principal Systems Engineer-Infrastructure to work onsite in either Richardson, TX or Cedar Rapids, IA. At Collins Aerospace your systems engineering expertise will help shape the future of aerospace technology and support mission-critical national defense systems. We support multiple contracts and are seeking to fill roles across several open contracts – 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 within Strategic Defense Solutions (SDS), you’ll contribute to the Infrastructure IPT using next-generation network, compute, storage, and cybersecurity solutions supporting Strategic Nuclear Deterrence programs. In this highly visible technical leadership role, you’ll drive complex systems engineering efforts across the full program lifecycle — from concept development and architecture definition through integration, accreditation, production, and sustainment. You’ll collaborate across engineering disciplines, influence technical strategy, mentor engineering teams, and partner directly with customers and program leadership to deliver mission-critical capabilities. Sign-on Bonus Eligible What You’ll Do:  Lead systems engineering activities across the full development lifecycle for complex aerospace and defense systems. Lead development of system architectures, CONOPS, interface definitions, and MBSE artifacts using SysML. Provide technical leadership for system integration, verification, validation, troubleshooting, and accreditation activities. Drive cross-functional collaboration across software, hardware, cybersecurity, integration, and test teams. Lead Agile systems engineering activities, including decomposition of epics and features into executable user stories with clear acceptance criteria. Manage technical execution, program risks and opportunities, schedules, cost, and performance objectives. Serve as a technical mentor and coach to systems engineering teams while supporting talent development and engineering excellence. Interface directly with customers, senior leadership, suppliers, and stakeholders in both collaborative and classified lab environments. Support proposal development, technical estimation, and strategic business growth initiatives. What You’ll Learn:  Advanced leadership practices supporting large-scale aerospace and defense programs. Application of cutting-edge MBSE methodologies and digital engineering strategies. Emerging technologies in secure communications, cloud-enabled architectures, and mission-critical military platforms. Best practices in operational excellence through Collins Aerospace’s Customer Oriented Results and Excellence (CORE) Operating System. Opportunities to influence technical strategy and innovation across strategic defense programs.  Qualifications You Must Have:  Demonstrated technical leadership experience leading engineering teams and cross-functional engineering efforts. Proven experience capturing customer requirements, developing operational concepts, and deriving and tracing system and subsystem requirements. Strong communication and presentation skills with executive leadership, customers, program teams, and external stakeholders. Experience leading technical decision-making, risk management, and system-level trade studies in complex development environments.  Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) + 10 years prior relevant experience or an Advanced Degree in a related field + 7 years of experience. The ability to obtain and maintain a U.S. government DoD issued top-secret security clearance is required.  U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.  Qualifications We Prefer:  Extensive experience designing and integrating complex network architectures using physical and virtual networks with VMware and/or cloud platforms (AWS, GCP, Azure, Oracle) in cloud and hybrid environments. Expertise with MBSE tools such as MagicDraw CAMEO, Rhapsody, or Enterprise Architect. Experience with development of FPGA designs. Experience leading Agile development activities as a Scrum Master, Product Owner, Release Train Engineer, or similar leadership role. Advanced experience developing complex SysML models, including activity, sequence, state, parametric, and block definition diagrams. Experience with Project Management, Control Account Management (CAM), earned value management systems (EVMS), and program execution. Familiarity with proposal development, basis of estimate creation, and estimation tools such as SEER products. Experience with digital transformation initiatives, DevSecOps, and modern systems engineering practices. Strong understanding of configuration management, change management, and peer review processes. Experience conducting root cause analysis, corrective actions, and continuous improvement initiatives. 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 This position may be 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 — 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 – 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 132,400 USD - 251,600 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 – 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.