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# Firmware Engineer

- **Company:** LER TechForce
- **Location:** Indianapolis, IN, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Board Bringup, Adobe Flash, Automation of Tests, Bluetooth Low Energy (Bluetooth), Code Review, Computer Programming, Software Debugging, Device Drivers, Embedded Software, Firmware, FreeRTOS, Python (Programming Language), LoRaWaN, Toolchain, Universal Asynchronous Receiver/Transmitter, Wi-Fi Technology, Data Logging, PIC Microcontroller, Test Scripts, Wireless Devices, Git, U-Boot
- **Published:** October 29, 2026
- **Apply:** https://www.careerboard.com/us/en/find-jobs-in-United-States/-885E4B8903CF7164E5/

## About the Role

* Bachelor's degree
 * At least 4 years of professional Embedded firmware development experience
 * Strong programming skills in C and C+
 * Experience working with Git-based development workflows
 * Hands-on experience with Embedded toolchains, HAL/LL libraries, SWD/GDB, and debugging tools such as J-Link or OpenOCD
 * Experience with at least two of the following communication technologies:
 * LoRaWAN
 * Wi-Fi
 * Bluetooth Low Energy
 * NFC
 * Cellular
 * Ability to use oscilloscopes and logic analyzers
 * Ability to read schematics and component datasheets
 * Clear communication, practical problem-solving skills, and strong product instincts

Preferred Qualifications

 * Experience with ESP32 or STM32 microcontrollers
 * Knowledge of FreeRTOS tasks, queues, and timers
 * Experience with lwIP, mbedTLS, secure boot, or Flash encryption
 * Familiarity with LoRaWAN regions and MAC behavior, BLE pairing and bonding, or Wi-Fi captive-portal provisioning
 * Experience developing factory-test automation or Python-based tools and fixtures
 * Experience modeling and optimizing power consumption for battery-operated products
 * Familiarity with e-paper or LCD user interfaces on resource-constrained microcontrollers, including LVGL
 * Experience with OTA services, device telemetry, or fleet-management platforms
 * Familiarity with quality and compliance environments in healthcare or life sciences, including audit-friendly logging and reporting

## Description

* Design, develop, and maintain Embedded firmware for low-power wireless devices using C/C+ and FreeRTOS
 * Develop and optimize device drivers and board-support code for I²C, SPI, UART, ADC, DAC, sensors, displays, external memory, and wireless radios
 * Build reliable connectivity features using LoRaWAN, BLE, Wi-Fi, cellular, and NFC
 * Develop Wi-Fi provisioning, roaming, station and access-point functionality, and power-aware duty cycling
 * Implement secure bootloaders and over-the-air update workflows with diagnostics, logging, and fail-safe rollback
 * Collaborate with hardware, cloud, and mobile teams to deliver features from concept through deployment
 * Participate in code reviews and continuous-integration activities
 * Support board bring-up, design verification testing, manufacturing test scripts, calibration workflows, and field reliability
 * Profile battery life, performance, and RF behavior while developing telemetry for real-world product observability