{"id":3131729,"url":"https://alion.io/job/rtx-principal-systems-engineer-software-systems-onsite","title":"Principal Systems Engineer – Software Systems (Onsite)","company":{"id":1162,"name":"RTX","domain":"rtx.com","url":"https://alion.io/company/raytheon-technologies","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":90,"open_postings":347,"ghost_share":0,"stale_share":0.585,"repost_share":0.037,"time_to_fill_p50_days":8,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tucson, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":107500,"max":204500,"currency":"USD","period":"year","gross":null,"usd_annual":204500},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Azure DevOps","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"Cameo Systems Modeler","optional":false},{"name":"Configuration Management","optional":false},{"name":"IBM DOORS","optional":false},{"name":"MATLAB","optional":false},{"name":"MBSE","optional":false},{"name":"Python","optional":false},{"name":"Verification & Validation","optional":false},{"name":"Azure","optional":true}],"status":"live","first_seen_at":"2026-06-08T00:00:00Z","employer_posted_date":"2026-06-08","last_verified_at":"2026-10-24T01:33:30Z","board_verified":true,"closed_at":null,"days_open":138,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":137},"description":"Date Posted:\n2026-06-08\n\nCountry:\nUnited States of AmericaLocation:\nUS-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805Position Role Type:\nOnsiteU.S. Citizen, U.S. Person, or Immigration Status Requirements:\nActive 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 clearanceSecurity Clearance Type:\nDoD Clearance: SecretSecurity Clearance Status:\nAbility to obtain INTERIM U.S. government issued security clearance is required prior to start dateAt Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world. \nThe Systems Engineering and Test Capabilities (SETC) organization is currently hiring a Principal Systems Engineer to join our Tucson, AZ location. SETC is an exciting and challenging environment where you will have the opportunity to design, develop and partner with multi-disciplines to shape innovative solutions for our customers. Join our organization and experience the Systems V engineering life cycle while interfacing with a variety of engineering disciplines, subject matter experts, Chief Engineers, Chief Technologists, the customer, and so many more to ensure we design, integrate, and strengthen our systems to work the first time and every time for our warfighters!\nAs a Principal Systems Engineer you will support missile programs as a Software-focused Responsible Systems engineer, contributing directly to successful software requirements and integration for both fielded and development missile systems. These responsibilities include managing system and subsystem requirements, providing SE technical oversight during integration and test activities, participating in verification and validation efforts for the system, and providing SE expertise in troubleshooting and failure investigations. The Software-Systems role requires a high level of technical proficiency in the area of embedded software design, integration and test. This included multi-disciplined coordination, and establishing and maintaining relationships with the embedded software team and customer technical community.\nIn this role, you will have the opportunity to work on an effectors project pertinent to the systems lifecycle. This role is 100% on-site at our Tucson, AZ campus with the possibility of occasional travel.\nWhat You Will Do\nUpdate and maintain all system and subsystem level requirements specifications for embedded software, configurable logic and/or test systems software\n\nModel the system and the system development and production processes using Cameo\n\nConduct Trade Studies and present results to customers\n\nSE technical contributor for verification and validation efforts, ensuring all requirements are being assessed\n\nWork closely with the Systems, Software, Configurable Logic and Test teams on a variety of program technical tasks\n\nParticipate in technical conversations with the customer\n\nBecome a knowledgeable and ‘go-to’ Systems Engineer for the software centric program capabilities\n\nHelp to onboard new team members, mentor, and guide them using core Systems Engineering skills\n\nQualifications You Must Have\nTypically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience.\n\nExperience in Systems Engineering\n\nExperience in Model-Based Systems Engineering (MBSE), Requirements Development, Requirements Management, Requirements Verification, or Integration and Test for software products\n\nQualifications We Prefer\nMasters or PhD in Engineering, Math or Physics\n\nExperience using Agile framework development methods / processes\n\nExperience with Agile, Model-Based Systems Engineering (MBSE), and/or Digital Engineering\n\nExperience presenting analytical and technical presentations\n\nExperience evaluating and mitigating technical risks\n\nA self-starter who can take on task with limited guidance\n\nCustomer focus and collaboration skills\n\nExperience with performance analysis\n\nExperience with DOORS and/or cPDM\n\nExperience using Azure DevOps methods/tools\n\nExperience with Matlab, C, C#, C++, Python\n\nAbility to perform trade studies to optimize system performance\n\nUnderstanding of Systems Engineering Product Development Cycle\n\nFamiliarity with system safety, reliability, and configuration management\n\nExperience working in an integration lab, test facility, or in the field supporting integration and/or verification.\n\nExperience evaluating systems using simulated environments\n\nExperience generating technical documentation such as trade studies, test plans, procedures or technical reports.\n\nExperience in integration with test equipment, telemetry data analysis tools, and missile systems host platforms\n\nWhat We Offer\nOur values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.\n\nRelocation Eligible - Relocation assistance is available\n\nLearn More & Apply Now!\nPlease consider the following role type definition as you apply for this role. \n\nOnsite: 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.\n\nThis position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS, an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm\n\nThis position is an onsite role - Tucson, AZ : https://careers.rtx.com/global/en/raytheon-tucson,-az-location\n\nWe Are RTX\n\nAs 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.\nThe 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.\nPrivacy Policy and Terms:\nClick on this link to read the Policy and Terms","description_format":"text","description_chars":8647,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Flexible schedule","Life insurance","Parental leave","Relocation assistance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Missiles","Air Defense","Defense Manufacturing","Avionics & Flight Control"],"lifecycle":[{"event":"open","at":"2026-10-23T04:02:14Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.19,"p_room":0.28,"age_days":137,"expected_fill_days":8,"reasons":["conf:1","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-23T05:54:15Z"},"pay":{"stated_usd_annual":204500,"is_top_pay":true},"html_url":"https://alion.io/job/rtx-principal-systems-engineer-software-systems-onsite","json_url":"https://alion.io/job/rtx-principal-systems-engineer-software-systems-onsite.json","meta":{"generated_at":"2026-10-24T02:34:36Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":4176,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":1162},"rest":"https://alion.io/mcp/rest/get_company?id=1162"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frtx-principal-systems-engineer-software-systems-onsite"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Frtx-principal-systems-engineer-software-systems-onsite"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Frtx-principal-systems-engineer-software-systems-onsite"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/rtx-principal-systems-engineer-software-systems-onsite\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frtx-principal-systems-engineer-software-systems-onsite"}]}