> Markdown version of [/jobs/ext/4693116-senior-embedded-firmware-engineer](https://www.wearedevelopers.com/jobs/ext/4693116-senior-embedded-firmware-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Embedded Firmware Engineer

- **Company:** 9VBYTE TECHNOLOGIES LLC
- **Location:** Indianapolis, IN, United States
- **Experience:** Expert
- **Contract:** Contract
- **Skills:** Abstraction Layers, ARM Architecture, Automation of Tests, Booting (BIOS), Continuous Integration, Software Debugging, Embedded C, Embedded Software, Firmware, Gecko (Software), Mesh Networking, Packet Analyzer, Real-Time Operating Systems, Wireless Sensor Networks, Universal Asynchronous Receiver/Transmitter, Serial Peripheral Interface, Event Driven Architecture, Git Flow, Bare Metal, Hardware Infrastructure, U-Boot
- **Published:** November 12, 2026
- **Apply:** https://www.dice.com/job-detail/0943e0ec-4019-4033-a2c8-01903131b300

## About the Role

The Senior Embedded Firmware Engineer will be a key member of our development team, focusing on the design, development, and optimization of firmware for our cutting-edge wireless products. This role requires a deep understanding of embedded systems, particularly in the context of RF engineering and wireless protocols. The ideal candidate will have a strong background in embedded C, RF engineering, and wireless protocol expertise, with a focus on low-power wireless sensor networks and mesh networking., * Strong experience with Embedded C (mandatory)

 * Proficiency in bare-metal and RTOS-based firmware development
 * Experience with ARM Cortex-M microcontrollers
 * Knowledge of interrupt-driven architectures
 * Familiarity with DMA, timers, watchdogs, GPIO, UART, SPI, I2C
 * Experience with bootloaders and firmware update systems
 * Proficiency in debugging with J-Link/SWD/GDB
 * Experience with low-power firmware design
 * Strong RF engineering knowledge, including antenna/layout awareness, RF sensitivity optimization, and link-budget analysis
 * Experience with Z-Wave, proprietary sub-GHz protocols, mesh networking, and low-power wireless sensor networks
 * Understanding of RF coexistence and OTA firmware updates over wireless
 * Knowledge of secure boot, firmware signing, key provisioning, encrypted OTA updates, secure pairing/authentication, replay protection, and secure storage of credentials

<>Preferred Skills

 * Experience with Silicon Labs wireless SDKs, Simplicity Studio, and Silicon Labs Gecko SDK
 * Familiarity with Z-Wave 700/800 series, SmartStart, S2 security, OTA DFU mechanisms, Zniffer packet analysis, and PTI packet tracing
 * Experience implementing custom protocol layers and modifying MAC/PHY behavior
 * Strong understanding of modular firmware architecture, state-machine design, and event-driven systems
 * Experience with Git workflows, CI/CD for firmware, and automated testing
 * Ability to create and maintain hardware abstraction layers
 * Excellent documentation discipline

## Description

* Design, develop, and optimize firmware for embedded systems, particularly ARM Cortex-M microcontrollers.
 * Collaborate with hardware engineers to ensure seamless integration of firmware with hardware components.
 * Implement and optimize low-power firmware design for wireless sensor networks.
 * Develop and maintain firmware update systems, including bootloaders and OTA updates.
 * Troubleshoot and resolve firmware-related issues, ensuring high reliability and performance.
 * Document firmware design decisions and maintain clear documentation for all firmware components.
 * Participate in the design and implementation of custom protocol layers and RF coexistence strategies.
 * Ensure firmware security by implementing secure boot, firmware signing, and encrypted OTA updates.
 * Work closely with cross-functional teams to meet project deadlines and technical goals.