Principal Software Engineer Embedded Cybersecurity- Active Secret; Onsite

Role Overview

Principal Software Engineer – Embedded Cryptographic Solutions, on‑site, U.S. Citizen only.

• Lead the design and development of secure, multi‑threaded embedded C++ or Rust codebases for military communications products.
• Integrate advanced cryptographic capabilities (device management, reprogramming, key management, encryption algorithms) into embedded Linux platforms.
• Collaborate with hardware, FPGA, and system engineering teams to ensure seamless product integration.
• Define comprehensive requirements, oversee implementation, and drive test case development, verification, and certification processes.
• Mentor and coach software engineers, promoting best practices and a high‑performing engineering culture.
• Influence product security and reliability, guiding future innovation and best‑practice development.

• 4+ years of experience in embedded software development and integration; 8+ years of relevant experience, or an advanced degree with 5+ years of experience.
• Proficiency in C, C++, or Rust and scripting with Python.
• Strong understanding of multi‑threaded product software, standard full‑life‑cycle practices, and configuration‑management tools.
• U.S. citizenship; current, active, transferable DoD Secret security clearance required prior to day one.

• Embedded security software development experience.
• Expertise in Linux development (mutexes, semaphores, queues, IPC).
• Knowledge of secure software and cryptographic algorithms.
• Experience leading teams and managing projects through the full software lifecycle.
• Strong background in Agile methodologies and process improvement.
• Proficiency with Python and networking protocols/IP networking.

Applicants must possess an active, transferable U.S. government‑issued DoD Secret clearance prior to the start date (U.S. citizen required).

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, 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.