**Date Posted:** 2026-02-09 **Country:** United States of America **Location:** US-MD-ABERDEEN-APG ~ 6260 Guardian Gtwy ~ APG **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: Secret **Security Clearance Status:** Active and existing security clearance required after day 1 Raytheon Company, Managed by Collins Aerospace The Precision Navigation business within the Mission Systems division of Collins Aerospace, Systems Engineering Center is growing! We are involved in all aspects of Systems Design and Architecture for the business area. This team, based at Aberdeen Proving Ground, is responsible for supporting system architecture development, CONOPS development, system trade studies, requirements analysis and flow down to hardware/software configuration items; leading to systems design for combat Identification Friend or Foe (IFF) solutions for air defense, air control, and self-protection missions in airborne and ground applications. We have an immediate and upcoming career growth opportunity for an experienced Sr Principal Systems Engineer to join our dynamic, talented, and rapidly growing team. This position is Onsite, based at our Aberdeen Proving Ground facility. **What You Will Do:** + Work closely with an Integrated Program Team (IPT) supporting a Model Based Systems Engineering (MBSE) environment to develop system requirements + Analyze and document system behaviors to meet emerging needs using MBSE tools and principles + Lead by driving technical integrity in the engineering team's products and behaviors, while ensuring program execution to plan + Provide functional guidance to less experienced engineers or exercise occasional functional supervision over technicians and clerical assistants **Qualifications You Must Have:** + Minimum 10 years of related systems engineering experience in requirements analysis and development, system performance analysis, utilizing MBSE tools and techniques + Knowledge of Systems Modeling Language (SysML) fundamentals + Ability to interact effectively with multidisciplinary teams of design professionals including electrical, mechanical, software, test, logistics and other systems engineers + 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 + 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. **Qualifications We Prefer:** + OMG-Certified Systems Modeling Professional + Experience using one or more of the following common MBSE tools: DOORs Next Gen, Cameo Enterprise Architect, Rational Rhapsody, etc. + Working experience with the development of Military equipment + Experience in execution of a disciplined engineering processes, scope management, people development, earned value management, and risk and opportunity management + Experience with DSP theory and / or MATLAB modeling + Active Secret Clearance **What We Offer :** 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. 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. **WE ARE REDEFINING AEROSPACE.** *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. _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._ Some of our competitive benefits package includes: + 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!  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 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 (http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice) to read the Policy and Terms Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.