Senior Firmware Engineer I - Batteries

United States · Arizona-HQ · Washington-Office · USD 141,000-225,600 · 8+ years experience · Hybrid · Posted Sep 22, 2026

At a glance

Join Axon as a Senior Firmware Engineer I - Batteries to contribute to AIoT Device-level Firmware Infrastructure as part of the Platform & Firmware development team.
This role focuses heavily on battery safety and thermals, battery health, battery charging, runtime profiling, fleet-wide metrics, and advanced battery firmware logic across Axon's camera, robotics, and cellular products.

Implementation and verification of Firmware for Battery Safety logic
Implementation and verification of Firmware for Battery Fuel-Gauging logic, including when working with multiple batteries that work together to create a composite Fuel Gauge 0 - 100% value
Implementation and verification of Firmware for Accelerated Battery Charging with Thermal considerations
Implementation and verification of Firmware for De-rating Batteries to achieve State of Health RMA targets
Implementation and verification of Firmware for eLinux User-space daemons that override Power Management and leverage Qualcomm System-on-Chip PMICs
Implementation and verification of Firmware patches for USB-C sub-systems where power is routed through when customizations are required for battery charging and related topics (e.g., moisture detection)
Implement fleet-wide battery metrics across 500K+ devices with Splunk dashboards and alerting, using AI-assisted analysis to spot degradation trends and anomalies faster than manual review allows
Diagnose and debug products RMA'd by Axon's customers, using AI tools to triage logs and draft findings, and deliver accessible failure analysis reports with remediation steps to Leadership
Collaborate heavily with Battery Engineers in the Electrical Engineering on any/all Battery topics; including meetings with APAC Battery vendors
Support Battery Runtime Profiling with breakdowns of any/all products supported by Axon both via Joulescopes and Automated Test Systems (ATS)

B.S. in Computer Engineering, Electrical Engineering or equivalent
Experience with Battery and Power Management sub-systems, Safety and Thermal
Experience in programming with C, C++, Rust, Golang and/or Python
Real-world Industry Firmware or Embedded experience of 8+ years developing on Battery-powered IoT products
Experience with Boot-loaders
Experience with System-on-Chips (SoC)
Ability to read Datasheets and Schematics
Experience and ability to use electrical lab bench equipment to profile and diagnose firmware-hardware boundary issues
Experience with concise Technical Writing and Architecture Diagramming
Strong understanding of Computer Architecture and Peripherals

Follows a hybrid schedule working onsite Tuesdays through Fridays, with the flexibility to work remotely on Mondays.