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