Senior Principal Software Engineer - Core Systems & Libraries (Onsite)
$132.4k - $251.6kRaytheon Co
Job ID: 01874661Posted: Posted 11 Days AgoStart Date: 2026-09-14Location: US-IA-CEDAR RAPIDS-124 ~ 400 Collins Rd NE ~ BLDG 124Country: United States of AmericaTime Type: Full timeDate Posted:2026-09-14 Country:United States of America Location:US-IA-CEDAR RAPIDS-124 ~ 400 Collins Rd NE ~ BLDG 124 Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements:U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Security Clearance Type: None/Not Required Security Clearance Status: Not RequiredDesign the Foundation of Next-Generation AvionicsJoin the growing Collins Aerospace Core Systems and Libraries team and play a key role in shaping the software foundation that powers modern aircraft. We are seeking a Senior Principal Software Engineer who thrives on solving complex technical challenges and driving high-impact solutions across safety-critical systems.In this role, you will lead the architecture and development of core software components, libraries, 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.This is a unique opportunity to influence system-level design, advance open architecture initiatives, and contribute to technologies that define the future of aerospace.Location: Onsite in Cedar Rapids, IowaWhat You Will DoLead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirementsDrive technical direction and execution across development and verification activities for safety-critical software (DO-178)Define and manage software requirements, decomposition, and traceability across complex systemsDevelop and verify software using modern C++ and object-oriented design principlesOwn and produce DO-178 certification artifacts, including DAL-A deliverablesLead and support certification efforts, including engagement with customers and regulatory authoritiesConduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycleCollaborate cross-functionally with engineering, program leadership, and customers to align technical solutions with program objectivesWilling and Able to travel as required (domestic and international <10%). What You Will LearnGain hands-on experience with cutting-edge and emerging technologies that are shaping the future of avionics and aerospace systemsBuild end-to-end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety-critical systemsDevelop a deep understanding of software certification (DO-178) and how world-class avionics products meet rigorous regulatory standardsLearn how to design, scale, and sustain software product lines that support a wide range of platforms and global customersQualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience oran Advanced Degree in a related field and minimum 7 years of experienceProven experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environmentDemonstrated ability to lead technical execution of projects, including customer engagement and presenting to senior stakeholdersHands-on experience supporting DO-178 software development and certification activities (e.g., requirements, verification, or certification artifacts)Experience working across cross-functional engineering and program teams to deliver complex, integrated solutionsQualifications We PreferExperience with C++ and VxWorks.Experience writing High-Level and Low-Level Requirements.Experience writing Test Cases and Automated Test Procedures.Experience with Civil Certification DO-178 – DAL A preferred.Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.Familiar with revision control concepts and tools (e.g. GIT, Subversion, JIRA).What We OfferMedical, dental, and vision insuranceThree weeks of vacation for newly hired employeesGenerous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy optionTuition reimbursement programStudent Loan Repayment ProgramLife insurance and disability coverageOptional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protectionBirth, adoption, parental leave benefitsOvia Health, fertility, and family planningAdoption Assistance Autism BenefitEmployee Assistance Plan, including up to 10 free counseling sessionsHealthy You Incentives, wellness rewards programDoctor on Demand, virtual doctor visitsBright Horizons, child and elder care servicesTeladoc Medical Experts, second opinion programAnd more! Learn More & Apply Now! Avionics delivers advanced cockpit displays, vision systems, and comprehensive digital solutions for global government, commercial and business aviation customers. We provide connectivity and managed data services to ensure safety and seamless communication for passengers, crews, and militaries, from aircraft and airports to air traffic management. Join us in creating solutions that connect the world, one flight at a time. Start your application today.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.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
$86.8k - $165.2k
...Senior Systems Engineer Collins Aerospace, an RTX company, is a leader in technologically advanced... ...Debug Real Time Operating System Software Assist in performing analysis at all... ...your needs before applying to this role. ONSITE : Employees who are working in Onsite...SeniorTemporary workWork experience placementWork at officeRelocation packageFlexible hours$86.8k - $165.2k
...NE ~ BLDG 137 Position Role Type: Onsite U.S. Citizen, U.S. Person, or... ...market. Collins Aerospace is seeking a Senior Systems Engineer in Cedar Rapids, IA. Our Mission Systems... ...requirements into hardware and software specifications. Provide analyses for...SeniorTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$86.8k - $165.2k
...Position Role Type: Onsite U.S. Citizen, U.S.... ...Environmental Effects Engineering (EEE) organization at... ...a talented and driven Systems Engineer to support the... ...definition, system design, software and hardware... ...types of activities: Core Systems Engineering: Develop...SeniorTemporary workWork experience placementWork at officeLocal areaImmediate startRemote workRelocationFlexible hours$86.8k - $165.2k
...BLDG 130 Position Role Type: Onsite U.S. Citizen, U.S. Person, or... ...Combat Test & Training (ACTT) Engineering Department specializes in... ...U.S. military communication systems, navigation systems, and networks... ...Team within ACTT is seeking a Senior Systems Engineer to provide...SeniorTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$107.5k - $204.5k
...~ BLDG 130 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...(SPS) team is looking for an Principal Software Lead Engineer who is passionate about collaborating... ...solutions that support Mission Systems. Our Principal Software Engineers work...SuggestedTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$86.8k - $165.2k
...NE ~ BLDG 107 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...and defense. We are seeking a Senior Systems Engineer to join the Integrated Flight Systems... ...is a cross-functional team of systems, software, integration, test engineers, and...SeniorFull timeTemporary workWork experience placementStart working todayWork at officeRemote workFlexible hours- Senior Software Engineer Collins Aerospace is looking for a Senior Software Engineer with a passion for... ...and make a difference! This is an onsite position based in Cedar Rapids, Iowa.... ...Scope Planning, Architecture and Design, System and Software Requirements, Implementation...Senior
- ...Senior Systems Engineer Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global... ...studies to translate customer requirements into hardware and software specifications. Provide analyses for the decomposition...SeniorRelocation package
- ...Systems Engineer The Environmental Effects Engineering (EEE) organization at Collins Aerospace is seeking a talented and driven Systems... ...pursuit and order capture, requirements definition, system design, software and hardware development and integration, systems test and...SeniorLocal areaImmediate startRelocation
- Senior Systems Engineer - Mission Systems Airborne and Ground Communication Products Department Collins Aerospace is seeking a Senior Systems... ...studies to translate customer requirements into hardware and software specifications. Decompose customer specifications and...SeniorRelocation package
$107.5k - $204.5k
...Collins Rd NE ~ BLDG 105 Position Role Type:Onsite U.S. Citizen, U.S. Person, or... ...aerospace and defense.We are seeking a Principal Software Engineer for our Avionics Software Tools team based... ...and Integrated Modular Architecture system configuration tools, delivering software...Permanent employmentTemporary workWork experience placementWork at officeImmediate startRemote workRelocationFlexible hours$107.5k - $204.5k
...Ave NE ~ BLDG 131 Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration... ...seeking qualified candidates for a Principal Software Engineer role within our Datalink Safety Routers... ...detailed designs, and software based on system and software requirements.Lead...Temporary workWork experience placementStart working todayWork at officeRemote workFlexible hours$86.8k - $165.2k
...Ave NE ~ BLDG 131 Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration... ...and defense.We are looking for a Senior Software Engineer with strong experience in GPU, graphics... ...within the VxWorks real-time operating system. This role supports safety-critical...SeniorContract workTemporary workWork experience placementWork at officeRemote workFlexible hours$55 - $64 per hour
...Senior/Principal Systems Engineer Location: Cedar Rapids, IA Job ID: #73061 Pay Range: $55-64 Job... ...) is highly desirable. This is an onsite position based in Cedar Rapids, Iowa.... ...teams and work within Eastern Time Zone core and global teams, including India...Senior$135.8k - $251.6k
...Collins Aerospace has an opening for a Senior Principal Engineer, Software Engineering in Cedar Rapids, IA.... ...tests and debug control and diagnostic systems that contain logical and... ...career? Join our Avionics team today.Onsite: Employees who are working in Onsite...SeniorTemporary workWork experience placementWork at officeRemote workFlexible hours$132.4k - $251.6k
...States of America Position Role Type Onsite U.S. Citizen, U.S. Person, or... ...This position is for an experienced Systems Engineering professional. Join the Mission Systems... ...customer requirements into hardware and software specifications. Provide analyses for...SeniorContract workTemporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours$86.8k - $165.2k
...BLDG 130 Position Role Type:Onsite U.S. Citizen, U.S. Person, or... ...failures in the build systems and develop unique solutions... ...with the team on our datalink software for our Test and Training programs... ...degree in Science, Technology, Engineering or Mathematics (STEM) and...SeniorTemporary workWork experience placementWork at officeRemote workFlexible hours$37k - $82k
...difference at RTX. What You Will Do: Understand KC-135 systems engineering processes Capture, define, allocate, verify and validate... ...completion of the internship / co-op session. Ability to be onsite in Cedar Rapids for test events and test environment updates...Full timeTemporary workWork experience placementSummer workInternshipRelocationFlexible hours$37k - $82k
...You Will Do: Determine full avionics system requirements for avionics systems Develop... ...Learn: Planning and tracking work in engineering tools (Jira, Confluence, JAMA, etc.)... ...role. This position is classified as: Onsite: Employees who are working in Onsite...Full timeTemporary workWork experience placementInternshipWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...166 Position Role Type: Onsite U.S. Citizen, U.S. Person, or... ...skilled Electrical or Computer Engineering candidate to join our... ...support cutting-edge Mission Systems products by developing and optimizing... ...teams of experts in software, systems, hardware, and FPGA...Full timeTemporary workWork experience placementInternshipWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...NE ~ BLDG 105 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...Aerospace, our Situational Awareness Software Engineering team develops and maintains critical flight... ...includes the Synthetic Vision System (SVS), Airport Moving Map (AMM), Integrated...Full timeContract workTemporary workWork experience placementWork at officeRemote workWorldwideRelocationFlexible hours$57.2k - $108.8k
...BLDG 182 Position Role Type: Onsite U.S. Citizen, U.S. Person, or... ...mission-critical avionics software performs flawlessly in the real world. As a Software Engineer I supporting Mission Sensors,... ...Identification Friendly or Foe) avionics systems, you’ll play a key role in...Full timeContract workTemporary workWork experience placementInternshipWork at officeRemote workRelocationFlexible hours$37k - $82k
...131 Position Role Type: Onsite U.S. Citizen, U.S. Person,... ...You Will Do: Contribute to Software Requirements, Design, Code,... ...Verification of the cockpit display system's graphics server.... ...and with target hardware in an engineering lab to achieve the goal of delivering...Full timeContract workTemporary workWork experience placementSummer workInternshipWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...NE ~ BLDG 137 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...at RTX. What You Will Do As a Software Engineer on our team, you will play a key role in... ...other disciplines, including hardware, systems, and FPGA engineering. You will be a...Full timeTemporary workWork experience placementInternshipWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...BLDG 105 Position Role Type: Onsite U.S. Citizen, U.S. Person, or... ...document, test, and debug low-level software utilizing SoC peripherals to... ...development, and utilization of display systems to ensure smooth operations on software engineering activities. You will ensure...Full timeContract workTemporary workWork experience placementWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...NE ~ BLDG 137 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...of aerospace and defense. As a Software Engineer I on our team, you will play a key role... ...other disciplines, including hardware, systems, and FPGA engineering. What You Will...Full timeTemporary workWork experience placementWork at officeRemote workRelocationFlexible hours$86.8k - $165.2k
...~ BLDG 137 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...Connectivity Products (RCP) Engineering seeks a Senior Software Engineer to join the Platform Services... ...space; and other radio frequency (RF) systems. Here, you’ll collaborate with...SeniorFull timeTemporary workWork experience placementWork at officeRemote workRelocationFlexible hours$57.2k - $108.8k
...Rd NE ~ BLDG 105 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration... ...phases) Perform technical planning, system integration, verification and validation,... ...executes test scripts Collaborate with engineers across multiple subsystems contributing toward...Full timeTemporary workWork experience placementInternshipWork at officeRemote workRelocationFlexible hours$132.4k - $251.6k
...enable secure, export‑controlled engineering environments. This role provides senior technical leadership across CI/CD, cloud automation, and secure software delivery practices while guiding teams... ...roles will work regularly both onsite and offsite. Ratio of time working...SeniorContract workTemporary workWork experience placementWork at officeRemote workFlexible hours- ...Assistant to provide comprehensive, proactive support to Senior Leaders within Avionics Engineering. The ideal candidate is a self-starter who operates... ...high-quality outcomes. This position requires daily onsite presence at our Cedar Rapids, Iowa location. What You...SeniorWork at office
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