Senior Firmware Engineer I - LTE

Axon; Scottsdale (AZ); Hybrid; USD 122,000 - 266,000; Full time

Job summary

Axon is seeking a Firmware Engineer with expertise in LTE and IoT devices to join their team in Scottsdale, AZ. You will collaborate with engineers, tackle complex connectivity challenges, and contribute to firmware development for crucial safety technologies. This role includes remote work options with occasional travel, providing a dynamic environment focused on meaningful impact and personal growth.

Benefits

Competitive salary

401k with employer match

Discretionary paid time off

Paid parental leave

Medical, Dental, Vision plans

Fitness Programs

Emotional & Mental Wellness support

Learning & Development programs

Qualifications

• 2 years’ hands-on experience with LTE or 5G modems.
• Understanding of SIM/eSIM workflows and carrier requirements.
• Experience with Kernel and User-space Embedded Linux.

Responsibilities

• Collaborate with engineers to integrate LTE modems.
• Develop scripts for modem data interpretation and debugging.
• Support carrier certification through log analysis and firmware fixes.

Skills

Understanding of LTE protocol stack

AT command sets

Network fundamentals

Programming with C

Programming with C++

Programming with Rust

Concise Technical Writing

Education

B.S. in Computer Engineering or Electrical Engineering

Job description

Join Axon and be a Force for Good.

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.

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. Your Impact

Contribute to IoT device-level firmware with a primary emphasis on the Cellular link as part of the Platform Firmware team. Platform Firmware owns connectivity across all camera-based products, drives automated test systems for engineering excellence, and partners with Hardware Engineering on new programs. Development environments include Embedded Linux (C/C++, Go, Yocto) and RTOS on micro-controllers (C). Rust is being explored. You will solve challenging cellular-centric problems and craft code used across Axon embedded product team.

Where You’ll Work

Location:Working Remotely with easy access to a Local Axon Hub in Scottsdale, AZ

What You’ll Do

Travel: Firmware Engineering requires collaboration with Hardware Engineering and being hands-on. While the job is Remote near a Local Axon Hub, travel obligations to the office for Board Bring-up, Hardware and Manufacturing Support are required during critical build milestones of the Product Development Life-Cycle. We are forecasting 10% travel to Boston, Scottsdale, Brussels or Finland over a period of 18mo - remainder of time is discretionary to your choice of working from home or working from the office.

What You’ll Do Reports to: Level-dependent; Firmware Engineering Manager or Director of Engineering, Platform Firmware
Direct Reports: None

• Collaborate with Electrical & RF engineers to integrate LTE modems; develop scripts and tooling that extract and interpret low-level modem data during bring-up and production.
• Debug and analyze modem logs to resolve attach, registration and throughput issues.
• Implement LTE functionality via AT commands and host-driver interfaces, ensuring reliable data connectivity and OTA update paths.
• Support carrier certification and field-test campaigns by reproducing issues, triaging logs and delivering firmware fixes in partnership with Axon Carrier-Ops.
• Develop manufacturing-line tools for SIM/eSIM provisioning and carrier-profile flashing; verify reliable activation at high volumes.
• Implementation and verification of Firmware for eLinux User-space daemons that manage cellular connection
• Build automated connectivity-health metrics & monitoring hooks so device fleets self-report signal quality, attach time and key KPIs.
• Partner with Cloud, Security and Carrier-Ops teams to validate APN/VPN configurations and protect SIM credentials.
• Provide scripts and analysis to help EE verify RF path performance and power behavior under worst-case LTE duty cycles.
• Write clear design docs, code reviews and troubleshooting guides that make cellular concepts accessible to non-specialists.
• When LTE work is light, pitch in as a generalist on Wi-Fi, BLE, power-management or test-infrastructure tasks.
• Write and review Design Docs, Pull Requests, and contribute to the Team’s documentation bank
• Drive Engineering Excellence and adopt a test and metrics-first mindset
• 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
• At least 2 years hands-on with LTE or 5G modems in IoT devices and or modem drivers.
• Understanding of LTE protocol stack, AT command sets, SIM/eSIM workflows, and typical carrier requirements.
• Working knowledge of network fundamentals (IP, VPNs, QoS, firewalls) and secure OTA update pipelines.
• Experience in programming with C, C++, Rust, Golang and/or Python
• Real-world Industry Firmware or Embedded experience of 8+ years developing on connected IoT products. E
• Experience with Bootloaders
• Basic ability to read Datasheets and Schematics
• 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) is a Plus
• Experience with power optimization and measurement in IoT devices is a Plus.

Benefits that Benefit You

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

The Pay: Axon is a total compensation company, meaning compensation is made up of base pay, bonus, and stock awards. The starting base pay for this role is between USD 122,000 in the lowest geographic market and USD 266,000 in the highest geographic market. 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 www.axon.com/careers/benefits (http://www.axon.com/careers/benefits).

#LI-Hybrid

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.

Important Notes

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 [e-mail]. Please note that this email address is for accommodation purposes only. Axon will not respond to inquiries for other purposes.