Firmware Engineer

The role

You will develop embedded software for a home robot and a wearable. This includes working on sensing, networking, motor control, and power distribution.

What you will do

• Own firmware end-to-end across the wearable and robot from architecture to production
• Write high-performance host-side systems software
• Develop communications, OTA, and diagnostics infrastructure for embedded devices
• Work with the EE team to design and bring up new hardware
• Solve cross-functional problems spanning hardware, firmware, embedded Linux, and higher-level software

Required qualifications

• BS or MS degree in Computer Engineering, Electrical Engineering, a related technical field, or equivalent practical experience
• 3+ years of real-time embedded software development
• Experience in architecture design, MCU selection, driver development, and working with RTOSes
• Proficiency in an embedded systems programming language, such as C, C++, or Rust
• Experience with debugging, instrumentation, and performance optimization across hardware, firmware, and host-side systems software
• Experience working with electrical engineering teams
• Ability to read and understand board schematics and layouts
• Experience with communication protocols such as I2C, SPI, UART, CAN (FD), or Ethernet

Nice to have

• Delivered at least one project from prototype through mass production
• Experience building robust, failure-tolerant firmware OTA pipelines
• Experience with Ethernet firmware and communications protocol design, especially involving PTP-based time synchronization
• Experience with embedded Linux, build systems (Bazel, CMake), or multi-device system architecture
• Familiarity with common control techniques for robot actuators, including cascaded feedback control, PID tuning, and torque control
• Experience with HIL testing, production validation software, or fleet-wide hardware observability
• Experience developing or porting platform firmware, including coreboot, UEFI/BIOS, secure boot, or TPM integration

About the company

Sunday is developing personal robots to reclaim hours lost to repetitive tasks. They are focused on making generalized robots broadly accessible for households.