Full Stack Senior Software Engineer, Onsite

Full Stack Senior Software Engineer – Fullerton, CA – Onsite – U.S. Citizen, Security Clearance Required

Location:

1801 Hughes Dr, Building 675, Fullerton, CA 92832, USA

Position Type:
Onsite. U.S. citizenship required for DoD Secret Clearance.

• Collaborate within an Agile team to design, implement, test and deploy cross‑domain software components enabling real‑time data collection, processing, and user interaction across distributed environments.
• Design, develop and maintain Python, SQL, JavaScript, HTML, and CSS based applications.
• Develop back‑end data services and RESTful APIs for real‑time and historical analytics.
• Contribute to data pipeline development, ML Ops, and Data Ops workflows to improve automation, traceability, and scalability.
• Support front‑end UI development for user operations and data visualization.
• Participate in code reviews, configuration management and automated testing within a CI/CD environment.
• Collaborate with systems, test and data engineers to align software components with system objectives.
• Author and maintain technical documentation and participate in design reviews.

• Degree in STEM (Science, Technology, Engineering or Mathematics) and at least 5 years of relevant experience.
• Proficiency 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.
• Ability to obtain and maintain a U.S. government‑issued security clearance; U.S. citizenship required.

• Foundational knowledge of SQL and relational database design.
• Experience with ML Ops or Data Ops frameworks such as Airflow, MLflow or Kubeflow.
• Familiarity with web application architecture and tools: REST, Graph
  
  QL, Postgre
  
  SQL, Mongo
  
  DB, Redis.
• Exposure to real‑time systems, distributed architectures or mission‑support software.
• Internship or project experience involving data pipelines, AI/ML integration or cross‑domain systems.
• Prior RTX or defense‑related project experience or demonstrated interest in defense mission domains.
• Understanding of cloud services (AWS, Azure or GCP) and containerization technologies (Docker, Kubernetes).
• Experience with test automation, CI/CD tools (Jenkins, Git Lab CI) and IaC tools.
• Excellent communication, documentation and problem‑solving skills.

• Salary range: $95,500 – $181,700 USD, depending on experience.
• Medical, dental, vision, life insurance, short‑term & long‑term disability, 401(k) match.
• Flexible spending accounts, flexible work schedules, employee assistance program, parental leave, paid time off, holidays.
• Annual short‑term and long‑term incentive compensation programs as applicable.

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.

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.