Full Stack Senior Software Engineer, Onsite

Date Posted: 2026-05-28Country: United States of AmericaLocation: US-CA-FULLERTON-675 1801 Hughes Dr BLDG 675Position Role Type: OnsiteU.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 clearanceSecurity Clearance Type: DoD Clearance: SecretSecurity Clearance Status: Active and existing security clearance required after day 1 At 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. Our Software Department in Fullerton, CA is looking to hire a Full Stack Senior Software Engineer to work onsite in Fullerton, CA. Our Culture | RTX Careers What You Will Do: This position offers the opportunity to work across multiple technology domains including back-end data processing, front-end web interfaces, and DevSecOps automation, while contributing to next-generation situational awareness and decision support systems. Collaborate within an Agile team environment to design, implement, test, and deploy software components that enable real-time data collection, processing, and user interaction across complex distributed environments.Design, implement, and maintain software applications using Python, SQL, JavaScript, and CSS.Develop and integrate back-end data services and RESTful APIs to support real-time and historical data analytics.Contribute to data pipeline development, ML Ops, and Data Ops workflows that improve automation, traceability, and scalability of deployed solutions.Support development of intuitive front-end user interfaces for user operations and data visualization.Participate in code reviews, configuration management, and automated testing as part of a continuous integration/continuous delivery (CI/CD) environment.Collaborate with systems, test, and data engineers to ensure software components align with overall system objectives.Author and maintain technical documentation and contribute to design reviews. 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 Experience in Python for application development, data processing, or automation. Experience with JavaScript, HTML, and CSS for UI development. Experience working in Linux or cross-platform development environments. Able to obtain and maintain a U.S. government issued security clearance as and when required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer: Foundational knowledge of SQL and relational database design principles. Experience with ML Ops or Data Ops frameworks (e.g., Airflow, MLflow, Kubeflow, or similar).Familiarity with web application architecture and tools (e.g., REST, GraphQL, PostgreSQL MongoDB, Redis).Exposure to real-time systems, distributed architectures, or mission-support software (e.g., visualization dashboards, situational awareness, telemetry).Internship or project experience involving data pipelines, AI/ML integration, or cross-domain systems.Previous RTX or defense-related project experience, or demonstrated interest/exposure to defense mission domains (e.g., aerospace, command-and-control, sensor systems, or intelligence applications).Understanding of cloud-based services (AWS, Azure, or GCP).Knowledge of containerization and deployment technologies (e.g., Docker, Kubernetes).Experience with test automation, CI/CD tools (e.g., Jenkins, GitLab CI), or Infrastructure as Code (IaC) tools.Well developed communication, documentation, and problem-solving skills. What We Offer: Our value