Senior Systems Engineer (ONSITE)

Location: US-CA-FULLERTON-676 ~ 1801 Hughes Dr ~ BLDG 676

 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 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. Join us and help shape the future of aerospace and defense. We are looking for a Senior Systems Engineer who is passionate about solving complex problems and wants to make a real impact on the Joint Precision Approach and Landing System (JPALS) and adjacent programs. In this role, you will take ownership of defining and evolving requirements for a fielded GPS‑based approach and landing system used in some of the most demanding operational environments. You’ll collaborate closely with cross-functional teams to deliver high‑quality, integrated system solutions. If you enjoy systems thinking, clear technical communication, and driving clarity out of complexity, this is a role where you can thrive—and grow. What You Will Do    • Support the JPALS and JPALS-adjacent programs    • Elicit, derive, and define system-level and subsystem-level requirements based on customer specifications and operational concepts    • Analyze stakeholder needs and translate them into technical, testable, and feasible requirements    • Apply systems thinking to ensure requirements completeness, consistency, and proper allocation across hardware, software, and interfaces    • Work with the system requirements engineering team and apply technical guidance from the team lead    • Develop and maintain requirements in IBM Rational DOORS, including traceability and change impact assessment    • Create and use scripts to automate documentation import/export to/from DOORS across multiple formats    • Define and document system and subsystem interfaces, contributing to ICDs and architecture artifacts    • Participate in technical discussions, design reviews, and requirement change assessments    • Support verification planning by defining verification methods and collaborating with test teams Qualifications You Must Have    • Familiarity with GPS/PNT systems    • Proficiency with IBM Rational DOORS and requirements management best practices    • Proficiency with DOORS DXL scripting    • Experience with systems engineering activities including requirement derivation, interface definition, allocation, integration, requirement sell‑off, analysis, test procedure development, test execution, and results evaluation    • Familiarity with generating and maintaining technical documentation such as specifications, ICDs, Test  Requirements Documents (TRDs), and Verification Cross‑Reference Matrices    • Proficient with Digital Engineering tools (DOORS, Cameo, Microsoft Office Suite, Jira, Confluence)    • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience  Qualifications We Prefer    • Strong understanding of systems engineering principles and lifecycle (concept → design → integration → verification → validation)Ability to understand how system components interact    • Ability to