About Us Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B valuing the company at $1.4 billion we are expanding our teams and capabilities to deliver mission-critical systems to allied forces. Our work is guided by clear values building technologies with real-world impact pursuing excellence in everything we do setting ambitious goals and taking on the hardest technical challenges. We operate in a demanding environment where rigor ownership and execution are expected. About The Role As an Embedded Software Engineer on the Launcher team you will take full ownership of the firmware architecture for our next-generation hardware products including field-deployable launchers ruggedized drone controllers and long-range RF systems. Operating in resource-constrained MCU environments you will work hand-in-hand with hardware and mechanical engineers to take products from initial board bring-up all the way through to production-ready field deployment. This role offers a fast-paced environment with high autonomy no heavy bureaucracy and a direct fast feedback loop between design and real-world deployment. Responsibilities Firmware Architecture & Design Design robust firmware architecture for mixed real-time and control workloads on MCUs using both bare-metal and RTOS environments. Define toolchains and coding standards across multiple products. Driver & Protocol Development Write and maintain low-level drivers for peripherals sensors RF modules and power-management ICs. Implement and debug communication protocols including SPI I2C UART USB CAN and RF link protocols. Real-Time Control Implement deterministic real-time control loops and manage interrupts timing and scheduling. Hardware Bring-up & Debugging Partner daily with the hardware engineer on board bring-up. Debug systems using oscilloscopes logic analyzers and JTAG/SWD debuggers writing custom bring-up and test scripts when needed. Production Maturity & Testing Own the prototype-to-production firmware maturity path. Build unit tests hardware-in-the-loop (HITL) testing and automated test benches to meet test coverage and reliability targets. Lifecycle & Security Develop secure bootloaders and robust reliable over-the-air (OTA) firmware update mechanisms for assets deployed in harsh environments. Cross-Functional Collaboration Align with Mission Application Developers on telemetry command and control interface requirements and collaborate with Mechanical Engineers on integration thermal regulation and shielding constraints. Requirements Education Master’s degree in Electrical/Computer Engineering Embedded Systems Computer Science or an equivalent technical field. Experience 2 to 10+ years of experience (Junior to Senior levels) in embedded software development. Production Track Record Proven experience taking at least one complete embedded product from initial prototype to mass production. Core Technical Skills Proficient in Embedded C/C++ with strong foundations in bare-metal and RTOS development (e.g. FreeRTOS Zephyr or equivalent) on MCUs typically ARM Cortex-M. Hardware & Protocols Deep understanding of MCU peripherals communication buses (SPI I2C UART USB CAN) and hands-on laboratory debugging equipment (oscilloscopes logic analyzers JTAG/SWD). Software Practices Strong discipline in version control CI/CD pipelines and automated firmware test methodologies. Mindset A rigorous autonomous and pragmatic professional who balances clean code and thorough validation with delivery speed. Bonus Points Experience developing drone UAV remote control or radio communication firmware. Experience designing RF link or wireless protocol firmware. Background working with ruggedized military or industrial-grade systems. Professional familiarity with Rust. We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.