Senior Firmware Engineer I - Batteries

Axon Enterprise; United States; Hybrid; USD 141,000 - 226,000; Full time

Benefits offered by this job

401k matching

PTO

Parental leave

Fitness programs

Wellness support

Snacks in office

Job summary

Axon is seeking a firmware engineer to advance Battery Safety, Fuel-Gauging, and charging logic across SoCs and PMICs. You’ll work in C, C++, Rust and Python within a battery-powered IoT ecosystem, collaborating with Battery Engineers and APAC vendors.

The role emphasizes AI-assisted analysis and automated testing. Based in Seattle or Scottsdale with a hybrid schedule, you’ll contribute to Jetson-like platforms and ATS fixtures while ensuring robust RMA remediation and performance metrics across

Qualifications

• BS in Computer or Electrical Engineering or equivalent.
• 8+ years embedded firmware on battery-powered IoT products.
• Experience with SoC, Boot-loaders and device drivers.

Responsibilities

• Implement and verify Firmware for Battery Safety logic.
• Implement and verify Battery Fuel-Gauging logic across multiple batteries.
• Develop Accelerated Battery Charging with thermal considerations.
• De-rate Batteries to meet State of Health targets.
• Work on eLinux user-space daemons that manage Power and PMICs.
• Patch USB-C subsystems for battery charging and moisture detection.
• Aggregate fleet-wide battery metrics with Splunk dashboards and AI-driven insights.
• Diagnose customer-reported RMAs and draft remediation reports for leadership.
• Collaborate with Battery Engineers and APAC vendors on battery topics.
• Support Runtime Profiling with Joulescopes and ATS tools.
• Create Battery Test Plans for HW verification and validation.

Skills

Battery & PMIC

C/C++

Rust

Golang

Python

SoC knowledge

Firmware debugging

AI tooling in engineering

Education

B.S. in Computer Engineering or Electrical Engineering

Tools

Yocto

OpenWRT

Git

Job description

At Axon, we’re on a mission to Protect Life. We’re explorers, pursuing society’s most critical safety and justice issues with our ecosystem of devices and cloud software. Like our products, we work better together. We connect with candor and care, seeking out diverse perspectives from our customers, communities and each other.
Life at Axon is fast-paced, challenging and meaningful. Here, you’ll take ownership and drive real change. Constantly grow as you work hard for a mission that matters at a company where you matter.

Your Impact

Contribute to AIoT Device-level Firmware Infrastructure as part of the Platform & Firmware development team and advance Axon’s mission to Protect Life. The Platform Firmware supports all of Axon’s Camera-based products, Robotics, key ownership of the Cellular LTE Link, Automated Test Systems for organizational Engineering Excellence, and is always at the fore-front of Innovation with Hardware Engineering for new programs.
The first priority of your impact is to be a member of the Platform & Firmware Battery sub-team with a critical eye towards Battery Safety & Thermals, Battery Health, Battery Charging, Runtime Profiling, Fleet-wide Metrics and all advanced Battery Firmware logic across Axon’s products. Also, innovating and instrumenting Automated Testing fixtures to protect new releases from regressions across many permutations. With few exceptions, the majority of Axon’s products are Battery-powered and we put significant emphasis on Battery Traits.
Our team builds with AI in the loop. We use AI coding and data-analysis tools every day to compress routine work, and spend the time saved on what demands an expert: battery safety logic, bench validation and root-cause decisions. You own the correctness of everything you ship, however it was written.
The types of firmware development environments where our most challenging battery work lies is on complex System-on-Chips (SoC), Power Management Integrated Circuits (PMIC), USB-C intricacies, and working with the vendors who own the Battery Fuel Gauges. Our team prefers to work in C, C++, Rust, Python and Yocto. Golang experience is a bonus.

Where You’ll Work

Location: Preferred locale is Scottsdale, AZ or Seattle, WA.
[Candidates near Boston, MA; Brussels, Belgium; Tampere, Finland; or Greater Romania may also be considered upon request]

What You’ll Do

• 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)
• Write concise Battery Test Plans for HW Verification and Validation Engineers
• Build and advance Axon R&D's Automated Test Systems (ATS) with custom battery-focused hardware fixtures, using AI to widen coverage across charger, temperature and battery-pack permutations so releases from Axon or 3rd parties don't introduce regressions
• Write and review Design Docs and Pull Requests, including AI-generated code, and hold it to the same bar as your own
• Be a Team Player, Mentor, Strong Communicator and be ready and willing to support the Team when needed

What You Bring

• 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
• Strong understanding of Operating Systems, Concurrency and Networking concepts
• Experience with both Kernel and User-space Embedded Linux with exposure to Yocto, OpenWRT or other Embedded Distros for Board Support Packaging (BSP)
• A mindset for Data-driven Engineering Excellence
• Daily, hands-on use of AI coding and analysis tools in your engineering work, with the judgment to know when their output can't be trusted

Benefits that Benefit You

• Competitive salary and 401k with employer match
• Discretionary paid time off
• Paid parental leave for all
• Fitness Programs
• Emotional & Mental Wellness support
• And yes, we have snacks in our offices

Benefits listed herein may vary depending on the nature of your employment and the location where you work

This role is based out of our Seattle or Scottsdale offices, and follows a hybrid schedule. We rely on in-person collaboration and ask that team members work onsite Tuesdays through Fridays, with the flexibility to work remotely on Mondays, unless there is an approved workplace accommodation. We believe that connection fuels innovation, and our in-office culture is designed to foster meaningful teamwork, mentorship, and shared success.

Axon is a total compensation company, meaning compensation is made up of base pay, bonus, and stock awards. The actual base pay is dependent upon many factors, such as: level, function, training, transferable skills, work experience, business needs, geographic market, and often a combination of all these factors. Our benefits offer an array of options to help support you physically, financially and emotionally through the big milestones and in your everyday life. To see more details on our benefits offerings please visit https://www.axon.com/careers .

Base Pay Range

$141,000 - $225,600 USD

Don’t meet every single requirement? That's ok. At Axon, we Aim Far. We think big with a long-term view because we want to reinvent the world to be a safer, better place. We are also committed to building diverse teams that reflect the communities we serve.

Studies have shown that women and people of color are less likely to apply to jobs unless they check every box in the job description. If you’re excited about this role and our mission to Protect Life but your experience doesn’t align perfectly with every qualification listed here, we encourage you to apply anyways. You may be just the right candidate for this or other roles.

The above job description is not intended as, nor should it be construed as, exhaustive of all duties, responsibilities, skills, efforts, or working conditions associated with this job. The job description may change or be supplemented at any time in accordance with business needs and conditions.

Some roles may also require legal eligibility to work in a firearms environment.

Axon’s mission is to Protect Life and is committed to the well‑being and safety of its employees as well as Axon’s impact on the environment. All Axon employees must be aware of and committed to the appropriate environmental, health, and safety regulations, policies, and procedures. Axon employees are empowered to report safety concerns as they arise and activities potentially impacting the environment.

We are an equal opportunity employer that promotes justice, advances equity, values diversity and fosters inclusion. We’re committed to hiring the best talent — regardless of race, creed, color, ancestry, religion, sex (including pregnancy), national origin, sexual orientation, age, citizenship status, marital status, disability, gender identity, genetic information, veteran status, or any other characteristic protected by applicable laws, regulations and ordinances — and empowering all of our employees so they can do their best work. If you have a disability or special need that requires assistance or accommodation during the application or the recruiting process, please email [e-mail]. Please note that this email address is for accommodation purposes only. Axon will not respond to inquiries for other purposes.

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For government reporting purposes, we ask candidates to respond to the below self-identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file.

As set forth in Axon’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows:

A \"disabled veteran\" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

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