Senior Firmware Engineer I - LTE

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
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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