Date Posted:2026-08-11 Country:United States of America Location:US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active 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 clearance​ Security Clearance Type: DoD Clearance: Top Secret Security Clearance Status: Active and existing security clearance required on day 1At RTX, the world 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.Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.The Integrated Solutions, Modeling, and Architecture (ISMA) Directorate supports customer focused mission modeling and simulation activities for all customer areas at Raytheon. Our teams develop, analyze, and create flexible integration solutions crossing all product areas such as sensors, effectors, command and control, logistics, and operations. They develop tools and methods to evaluate campaign, mission, and system level analysis and visualizations based on customer requirements. The department has a tradition of excellence through innovation and teamwork while championing individuality in a flexible work environment to meet the needs of today’s workforce.As a member in the Cross-Domain and Space Operations Solutions Section, you will be joining a team of high-performing engineers focused on using simulation and analysis of current and future integrated space systems and capabilities (orbital and ground) across RTX to include Golden Dome Architectures and Space Based Intercept.This is an onsite role in El Segundo, CA. What You Will Do Evaluate end-to-end system requirements through CONOPS and Design Reference Missions (DRMs) to understand space and missile system integration interfaces and data connectivity across military kill-chains. Provide modeling and simulation of satellites, constellations, and system-of-systems architecturesSupport design and integration of mission data processing algorithms to improve detection, tracking, data correlation and data fusionDevelop and implement innovative model-based solutions to support mission trade studies and performance simulations. Contribute knowledge of performance engineering practices and procedures to evaluate work across a wide range of computational problems across multiple domains. Analyze data to understand performance requirements for integration of space and missile systems. Develop analytical metrics to validate proposed architectures against missile and space systems requirements as well as help shape future tech growth. Develop and implement algorithms to provide next-generation performance across entire system- of- systems to include the integration of space and missile systems. Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.Experience with simulation and analysis of space vehicles and satellite constellations, including orbital dynamics, satellite constellation design, and satellite communications including link budget analysis. Experience with the Ansys Systems Tool Kit (STK) or other multi-domain mission analysis, scenario modeling, and visualization for aerospace, defense, and other complex systems ie AGI STK (Systems Tool Kit, MathWorks MATLAB and Simulink, LtSim, OpenSceneGraph, Cesium, Cesium, VTKExperience with MATLAB or Python.Active and transferable U.S. government issued Top Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearanceQualifications We PreferTechnical, analytical and communication skills for collaboration with peers and presentation to senior technical staff and customers.Experience with Solis, Astrogator, and/or ODTK.Active TS/SCI security clearance Experience with Raytheon owned Modeling and Simulation tools (e.g. OpsTool or RCADE) or Government/Industry Modeling and Simulation tools (e.g. Missile Tool Kit or AFSIM).Advanced degree in Science, Technology, Engineering or Mathematics (STEM).Experience with Java, C++ or equivalent programming languageExperience conducting analyses and studies, including how to define and execute a study and evaluate a new concept of operation. Learn More & Apply NowOnsite: 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.Clearance Information: This 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.htmLocation Info and/or Links: El Segundo, CA: https://careers.rtx.com/global/en/raytheon-el-segundo-ca-location #LI-RH2As 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 95,500 USD - 181,700 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