Senior Software Engineer, Embedded Systems

As a Senior Embedded Software Engineer at Elroy Air, you will own software running on safety-critical avionics hardware, including main flight computers. You'll work across the full embedded stack—from bare-metal firmware and RTOS integration to hardware bring-up and bench debugging—and collaborate daily with engineers across systems, controls, flight physics, power electronics, and aeromechanical disciplines. Your code will fly the plane in any conditions, with no margin for error.

Responsibilities

• Embedded firmware for microcontrollers and SoCs in a bare-metal and/or RTOS environment (FreeRTOS, Zephyr, or similar)
• Driver development, peripheral integration, and board bring-up for custom hardware platforms
• Real-time control loops and sensor fusion pipelines where timing and determinism are non-negotiable
• Hardware debugging: oscilloscopes, logic analyzers, JTAG, and willingness to get comfortable with a schematic
• C++ and Python tooling for testing, scripting, and automation around embedded targets
• Development of models and emulators for aircraft components to ensure hardware behavior is faithfully represented in our cloud simulation framework

Requirements

• 5+ years of professional embedded software development, with production firmware shipped on real hardware
• Deep fluency in C and/or C++; Python for scripting and test tooling
• Hands-on experience with at least one RTOS and with bare-metal development
• Comfort reading schematics, using bench instruments, and debugging hardware/software integration issues at the signal level
• Experience with communications protocols: SPI, I2C, UART, CAN, Ethernet
• Strong opinions about code quality, testability, and the difference between software that works in the lab and software that works in the field

Nice to have

• Experience in aerospace, defense, robotics, or other safety-critical domains
• Familiarity with DO-178, MISRA, or other embedded software standards
• Exposure to desktop tooling or visualization for hardware debug and test workflows
• Experience with CI/CD pipelines for embedded targets (HIL, SIL, emulation)

Benefits

• Competitive salary
• Equity ownership in a rapidly growing advanced aerospace company
• Comprehensive medical benefits
• 401(k) with company contribution + Roth IRA
• Free daily lunch provided onsite
• Flexible time-off policy
• 3 months of paid parental leave
• Employee assistance program with 24/7 support
• High-impact startup environment with significant ownership and autonomy
• Opportunities for rapid career growth and internal advancement
• You’ll work with a motivated, kind, and highly skilled team
• You'll help shape and define our company culture and values
• You'll help build and scale a new category of aerospace / logistics technology