> Markdown version of [/jobs/ext/4647771-principal-real-time-software-engineer](https://www.wearedevelopers.com/jobs/ext/4647771-principal-real-time-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Real-time Software Engineer - **Company:** RTX - **Location:** El Paso, TX, United States - **Experience:** Expert - **Salary:** $107,500 - $204,500 - **Contract:** Permanent contract - **Skills:** Assembly Language, Linux, Device Drivers, Embedded C, Embedded Software, Firmware, Software Architecture, Real-Time Operating Systems, Verilog, VHSIC Hardware Description Language (VHDL), VxWorks, Bare Metal - **Published:** November 9, 2026 - **Apply:** https://www.thejobnetwork.com/job/63e6f2fe-8781-41ef-8b4c-4064f89b658e/principal-realtime-software-engineer ## About the Role * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience. \n * Experience including at least two of the following: Embedded C++ Software, Embedded Software Security, Software Architecture Design and Implementation. \n * Experience using embedded Real Time Operating Systems (RTOS) (e.g., Green Hills, Integrity, Wind River VxWorks, Linux, etc.) \n * Experience developing complex systems involving the integration of hardware, firmware, and software \n * Active and transferrable final Secret U.S. government issued security clearance is required prior to start date with the ability to obtain program access after start. \n, * Familiarity with reading electrical schematics and relating it to software function. \n * Familiarity with reading firmware source like VHDL or Verilog. \n * Familiarity with assembly language in at least one processor/controller family. \n * Experience using lab instruments like power-supplies, digital multi-meters, oscilloscopes, and logic analyzers. \n * Experience with developing device drivers for bare-metal and/or OS applications. \n * Experience leading engineering teams in delivering systems (of various size) involving the integration of hardware and software. \n