{"id":4206367,"url":"https://alion.io/job/rtx-principal-software-engineer-advanced-system-tools-onsite","title":"Principal Software Engineer - Advanced System Tools (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":"B","score":82,"open_postings":590,"ghost_share":0.007,"stale_share":0.69,"repost_share":0.037,"time_to_fill_p50_days":29,"computed_at":"2026-11-12T10:38:37Z"}},"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":["Cedar Rapids, 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":"AWS","optional":false},{"name":"C++","optional":false},{"name":"DO-178C","optional":false},{"name":"DO-254","optional":false}],"status":"live","first_seen_at":"2026-11-12T23:46:20Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T23:46:20Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Date Posted:\n2026-11-12\n\nCountry:\nUnited States of America\n\nLocation:\nUS-IA-CEDAR RAPIDS-124 ~ 400 Collins Rd NE ~ BLDG 124\n\nPosition Role Type:\nOnsite\n\nU.S. Citizen, U.S. Person, or Immigration Status Requirements:\nU.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.\n\nSecurity Clearance Type:\nNone/Not Required\n\nSecurity Clearance Status:\nNot RequiredAt RTX, the world's 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.\nCollins 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.\nDesign the Foundation of Next-Generation Avionics\nJoin a dynamic and expanding Product Line Software team at Collins Aerospace, where you will play a key role in shaping the foundation of future airborne software capabilities and solutions. We are seeking a Principal Software Engineer who thrives on solving complex technical challenges and driving high-impact solutions across safety-critical systems. We have opportunities in one of our two departments:\nCore Services & Libraries, dedicated to creating versatile frameworks that enable highly adaptable and portable software solutions, agnostic of hardware or software configurations. \nAdvanced Systems Tools, driving a development eco-system (development kits, virtual rigs, and test rigs) enabling the development, integration, verification, and configuration of avionic products and platforms. \nIn this role, you will lead the architecture and development of core software components, libraries, rigs and tools that enable scalable, certifiable avionics platforms. You’ll work across the full software lifecycle, partnering with cross-functional teams to deliver high-quality solutions aligned with civil and military certification standards.\nThis is a unique opportunity to influence system-level design, advance open architecture initiatives, and contribute to technologies that define the future of aerospace.\nWhat You Will Do:\n Lead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements.\nWork with technical direction and execution across development and verification activities for safety-critical software (DO-178, DO-254, and/or DO-330).\nDevelop and manage software requirements, ensuring proper decomposition and traceability across complex systems of systems.\nDevelop and verify software using modern C++ and object-oriented design principles. \nOwn and produce certification artifacts, including DAL-A deliverables.\nLead and support certification efforts, including engagement with customers and regulatory authorities.\nConduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle.\nCollaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectives.\nWilling and Able to travel as required (domestic and international What You Will Learn:\nGain hands-on experience with cutting-edge and emerging technologies that are shaping the future of avionics and aerospace systems.\nBuild end-to-end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety-critical systems.\nDevelop a deep understanding of civil certification (DO-178, DO-254, and/or DO-330) and how world-class avionics products meet rigorous regulatory standards.\nLearn how to design, scale, and sustain software product lines that support a wide range of platforms and global customers.\nQualifications You Must Have:\nTypically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience.\nExperience designing and developing software architecture, libraries, or platform-level components.\nExperience leading technical execution of projects, including customer engagement and presenting to senior stakeholders.\nQualifications We Prefer:\nHands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts)\nExperience working across cross-functional engineering and program teams to deliver complex, integrated solutions \nExperience with C++ and VxWorks. \nExperience with Cloud Based development environments (such as AWS). \nExperience with AI based tools & development practices. \nExperience writing High-Level and Low-Level Requirements. \nExperience writing Test Cases and Automated Test Procedures. \nExperience with Civil Certification DO-178 - DAL A. \nExperience with design and development of Avionics Tools, Aircraft Applications or Middleware. \nFamiliar with revision control concepts and tools (e.g. GIT, Subversion, JIRA). \nWhat We Offer:\nBenefits:\nSome of our competitive benefits package includes:\nMedical, dental, and vision insurance \nThree weeks of vacation for newly hired employees \nGenerous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option \nTuition reimbursement program \nStudent Loan Repayment Program \nLife insurance and disability coverage \nOptional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection \nBirth, adoption, parental leave benefits \nCarrot Health to hormonal health, fertility, and family building\nAdoption Assistance \nAutism Benefit \nEmployee Assistance Plan, including up to 10 free counseling sessions \nHealthy You Incentives, wellness rewards program \nDoctor on Demand, virtual doctor visits \nBright Horizons, child and elder care services \nTeladoc Medical Experts, second opinion program \n And more! \nThis role is eligible for relocation.\nLearn More & Apply Now!\nCollins Aerospace makes modern flight possible. Of course, that wouldn’t be possible without the capabilities and technologies of our organization, as well as our engineers - a highly skilled, accomplished network that spans more than 180 sites, 24 countries and 6 Strategic Business Units (SBUs).\nOur industry-leading experts are setting the standards for the aerospace industry and paving the way for the future. But as new challenges present themselves, we need fresh, creative and motivated minds to overcome these hurdles, help us break barriers and achieve new levels of innovation. Do you have what it takes to join a global organization that doesn’t shy away from big opportunities? If so, we invite you to join our ranks and create the next generation of aerospace technologies.\nTogether, we will nurture an engineering culture that values intellectual curiosity, risk takers and integrity. A place where we will challenge ourselves, our teams, and the status quo and where we will work to find a way - the right way - to achieve what others can only dream of.\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.\nAt 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.\nApply now and be part of the team that’s redefining aerospace, every day.\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":10474,"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","Vision insurance"],"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":"2026-11-12T23:46:20Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 10 · green card filings: 1","filings_12m":10,"filings_prev_12m":9,"green_card_filings_12m":1,"median_offered_wage_usd":133864,"route":null,"cap_exempt":false,"checked_at":"2026-11-12T07:36:15+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":29,"reasons":["conf:2","win:early","comp:brand"],"computed_at":"2026-11-13T01:59:26Z"},"pay":{"stated_usd_annual":204500,"is_top_pay":true},"html_url":"https://alion.io/job/rtx-principal-software-engineer-advanced-system-tools-onsite","json_url":"https://alion.io/job/rtx-principal-software-engineer-advanced-system-tools-onsite.json","meta":{"generated_at":"2026-11-13T01:59:26Z","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":4174,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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-software-engineer-advanced-system-tools-onsite"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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-software-engineer-advanced-system-tools-onsite"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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-software-engineer-advanced-system-tools-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-software-engineer-advanced-system-tools-onsite\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frtx-principal-software-engineer-advanced-system-tools-onsite"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4206367}},{"tool":"search_jobs","arguments":{"company":"rtx.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4206367},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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