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# Senior Embedded Firmware Engineer (Wireless & Z-Wave)

- **Company:** Vsg Business Solutions
- **Location:** Indianapolis, IN, United States
- **Experience:** Expert
- **Salary:** $124,800 - $145,600
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Abstraction Layers, Application Programming Interfaces (APIs), ARM Architecture, Automation of Tests, Booting (BIOS), Communications Protocols, Software Debugging, Embedded C, Embedded Software, Firmware, Gecko (Software), Mesh Networking, Real-Time Operating Systems, Reduced Instruction Set Computing, Wireless Sensor Networks, Universal Asynchronous Receiver/Transmitter, Diagnostic Tools, Serial Peripheral Interface, State Machines, Event Driven Architecture, Git Flow, Bare Metal, U-Boot
- **Published:** November 10, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-embedded-firmware-engineer-wireless-z-wave-indianapolis-in--81998dc4-f9d9-4010-977a-37ed75ea22c7

## About the Role

Embedded Systems, Wireless Communications, Computer Firmware, Computer Firmware, Wireless Products, Embedded Systems, C Programming Language, ARM (Advanced RISC Machine), I2C, Communications Protocols

## Description

Develop and maintain embedded firmware for wireless products, focusing on Z-Wave and proprietary sub-GHz protocols (using Embedded C for ARM Cortex-M platforms).

 - Design, implement, and optimize low-power, interrupt-driven firmware for ARM Cortex-M microcontrollers, including DMA, timers, watchdogs, and communication protocols (UART, SPI, I2C, GPIO).
 - Work with bare-metal and RTOS-based systems, including bootloaders and firmware update mechanisms (OTA updates).
 - Debug and troubleshoot firmware and RF issues using tools such as J-Link, SWD, GDB, spectrum analyzers, and VNAs.
 - Collaborate closely with hardware engineers on RF topics such as antenna layout, RF sensitivity, EMC/EMI issues, and FCC/CE certification processes.
 - Implement and maintain wireless mesh networking, focusing on Z-Wave, low-power wireless sensor networks, and RF coexistence strategies.
 - Utilize Silicon Labs platforms, including Simplicity Studio, Gecko SDK, and wireless stack APIs; work with Z-Wave 700/800 series, SmartStart, S2 security, and associated diagnostic tools (Zniffer, PTI).
 - Incorporate robust security features such as secure boot, firmware signing, key provisioning, encrypted OTA updates, secure pairing/authentication, replay protection, and secure storage of credentials.
 - Apply best practices in firmware architecture, using modular and event-driven design, state machines, automated testing, hardware abstraction layers, and disciplined documentation.
 - Employ Git workflows and CI/CD pipelines for efficient, reliable firmware development and deployment.
 - Communicate effectively, work independently, and document technical decisions while realistically assessing schedules and technical risks.
 - Work onsite, Monday through Friday (9AM 5PM), in Indianapolis, IN, interfacing with cross-functional engineering teams.