Principal Software Engineer (Hybrid - Aguadilla, PR)

RTX, the world's largest aerospace and defense company, is seeking a Principal Software Engineer to lead the architecture, design, and development of complex real-time embedded software for navigation and timing solutions. This role involves providing technical leadership to software teams and ensuring compliance with customer expectations and certification standards.

Responsibilities:

• Lead the architecture, design, and development of complex real‑time embedded software for navigation and timing solutions supporting military ground, airborne, and maritime applications
• Drive technical excellence across all phases of the software engineering lifecycle, including requirements analysis, architecture definition, design, code development, integration, verification, and documentation
• Provide technical leadership to cross‑functional software teams, fostering a culture of innovation, continuous improvement, and engineering discipline
• Serve as a senior technical authority for production test solution software, defining strategies and ensuring robust, scalable, and maintainable test applications. Responsibilities include:
• Translating hardware test requirements into modular, automated test software
• Developing and maintaining production‑grade test sequences, drivers, and data management capabilities
• Leading verification/validation of test software and ensuring compliance with program, quality, and regulatory requirements
• Providing troubleshooting, sustainment, and continuous improvement support for production test stations
• Ensuring configuration control, versioning, and traceability of test software in alignment with production needs
• Guide teams in developing software that complies with customer expectations and certification standards, ensuring both functionality and regulatory compliance
• Participate and lead Agile ceremonies, promoting transparency, technical rigor, and predictable delivery
• Collaborate with systems, hardware, and test engineering teams to ensure seamless hardware/software integration and high‑reliability field performance

Requirements:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience
• Demonstrated professional experience communicating in English (verbal and written)
• U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract
• Demonstrated expertise with the Software Development Life Cycle (SDLC) for embedded and test software
• Strong experience in embedded software development, real‑time systems, and hardware‑centric products
• Experience designing and developing production test software (automated test scripts, instrument drivers, hardware abstraction layers, data capture interfaces)
• Experience with UI/UX, front‑end and back‑end development, and API design for embedded or test applications
• Experience with C, C++, Ada, or other high‑order languages in embedded environments
• Experience with Python for test scripting, automated test planning, unit testing, or data analysis
• Familiarity with CI/CD tools such as Docker, Artifactory, GitLab Pipelines, etc
• Experience managing and supporting configuration management systems (SVN, Git, GitLab, GitHub)
• Experience working with Linux and/or Windows environments
• Knowledge of hardware/software integration and troubleshooting methodologies
• Experience with engineering tools such as Visual Studio, Eclipse, Jira, DOORS, Jama
• Familiarity with Agile methodologies, DevSecOps practices, or model‑based development approaches