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# Embedded Software Engineer (only w2 contractors)

- **Company:** 22nd Century Technologies, Inc.
- **Location:** Indianapolis, IN, United States
- **Experience:** Expert
- **Salary:** $156,000.0 - $208,000.0
- **Contract:** Temporary contract
- **Skills:** ARM Architecture, User Authentication, Automation of Tests, Booting (BIOS), Continuous Integration, Software Debugging, Embedded C, Embedded Software, Firmware, Gecko (Software), Mesh Networking, Real-Time Operating Systems, Wireless Sensor Networks, Systems Integration, Universal Asynchronous Receiver/Transmitter, Serial Peripheral Interface, Git, Bare Metal, Wireless Technologies, U-Boot
- **Published:** August 11, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=571d191b71ad2d42

## About the Role

Must have experience with: RF/Sub GHz/ Z-wave, * Strong Embedded C experience.

 * Bare-metal and RTOS firmware development.
 * ARM Cortex-M/M33 experience.
 * Interrupt-driven architectures.
 * DMA, timers, watchdogs, GPIO, UART, SPI, and I2C.
 * Bootloaders and OTA firmware updates.
 * J-Link, SWD, and GDB debugging.
 * Low-power firmware development.
 * Strong wireless/sub-GHz experience, preferably Z-Wave.
 * Mesh networking and wireless sensor networks.
 * Silicon Labs EFR32, Simplicity Studio, and Gecko SDK experience preferred.
 * Z-Wave 700/800, SmartStart, S2 security, Zniffer, and PTI experience preferred.
 * Knowledge of secure boot, firmware signing, encrypted OTA, and secure authentication.
 * RF/EMC/EMI troubleshooting knowledge is a plus.
 * Git, CI/CD, automated testing, and modular firmware architecture preferred., * Bachelor's (Required), * embedded software development: 5 years (Required)
 * RF/Sub-GHz wireless development: 5 years (Required)
 * Z-Wave or similar wireless protocol: 5 years (Required)

## Description

* The Embedded Software Engineer will develop and maintain embedded firmware for ARM Cortex-M-based wireless systems, working closely with hardware and RF engineering teams., * Develop, debug, and maintain embedded firmware.
 * Develop wireless and sub-GHz communication features.
 * Implement bootloaders and OTA firmware updates.
 * Debug hardware and wireless issues using J-Link/SWD/GDB.
 * Optimize firmware for low-power applications.
 * Work with hardware and RF engineers on system integration and troubleshooting.
 * Support embedded security and wireless protocol development.
 * Document technical designs, testing, and troubleshooting.


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