Senior PX4 Developer

Rainmaker builds systems to make it rain. Our autonomous drone fleets and weather modification platform operate worldwide: expanding freshwater supplies, protecting agriculture, and proving that cloud seeding works at scale.
 
You are:
A seasoned software engineer with a background in drone autonomy
Fast, thoughtful, autonomous, and opinionated
Willing to relocate to El Segundo, California
What you’ll work on:
Contribute to our drone autonomy software stack end-to-end as a domain expert
Modify and extend PX4 firmware for custom use cases and flight behaviors
Develop firmware for embedded systems across power, peripherals, and sensing
Support simulation-based testing in Gazebo, HITL, and SITL environments
Assist with flight test support, log analysis, and software debugging
What we’re looking for:
3+ years of professional experience developing software for PX4/ArduPilot systems
Experience shipping production code in Rust, plus C++ or Python
Experience developing firmware for ESP32, RP2040, or similar embedded targets
Comfort with low-level peripheral buses: CAN, UART, I2C, SPI
Experience with real-time pub/sub middleware (Zenoh, DDS, ROS 2, MQTT, or similar)
Working knowledge of MAVLink and typical autopilot integration patterns