Senior Firmware Engineer

Job description

Job responsibilities

• Develop and extend the firmware running on the sensor boards, motor controllers, and power and monitoring hardware inside our Sentry Tower products.
• Take on the projects that build on top of our existing firmware baselayer, and the ones that replace parts of it, without regressing the towers already depending on it.
• Drive our ongoing effort to harden firmware security: authenticated and verified firmware updates, protecting the interfaces a physical attacker could reach, and closing the gaps in what shipped before that was a…
• Own the firmware update path, including updates that have to be safe to apply to a unit already in the field.
• Work with our tower software team on the boundary between firmware and the services above it, so a failure can be diagnosed from either side.
• Collaborate with hardware engineers on board bring-up and debugging, from first power-on to a validated, production-ready board.

Job requirements

• 4+ years experience in firmware development using C.
• Strong understanding of microcontroller architectures (ARM, RISC-V).
• Proficiency in low-level networking protocols (TCP/IP, CAN, SPI, I2C).
• Experience with RTOS and bare-metal programming.
• Familiarity with debugging tools like JTAG, oscilloscopes, and logic analyzers.
• Solid understanding of computer architecture and memory management.
• US person status required, with eligibility to obtain and maintain a US security clearance.