Job Title: Senior Firmware Engineer Cellular & Wi-Fi IoT Experience: 5-8 Years Domain: LTE / NB-IoT / Wi-Fi | Low-Power IoT Location: Ahmedabad

Role Summary We are looking for a Senior Firmware Engineer with robust hands-on experience in cellular and Wi-Fi based IoT products. The role focuses on firmware development, connectivity integration, and aggressive battery optimization for production-grade devices. You will work on real field-deployed products, owning firmware modules such as cellular modem integration, Wi-Fi connectivity, power management, OTA, and system debugging.

Key Responsibilities Firmware Development & Architecture

- Design and develop embedded firmware on RTOS / bare-metal platforms.
- Implement modular firmware components aligned with system architecture.
- Participate in firmware architecture and design reviews.

Cellular Firmware (Core Skill)





- Integrate and maintain firmware for:
- LTE / LTE-M / NB-IoT
- Work with cellular modules (Quectel / u-blox or similar):
- AT command handling
- Network attach / detach logic
- Reconnect and recovery flows
- Handle real-world network issues:
- Poor coverager
- Intermittent connectivity
- SIM and registration failures
- Optimize modem usage for:
- PSM / eDRX
- Minimal wake-up and transmit time Wi-Fi Firmware
- Implement Wi-Fi connectivity:
- Station mode
- TCP/IP stack integration
- Secure communication (TLS)
- Optimize Wi-Fi behavior for:
- Power consumption
- Fast connection
- Reliable data transfer
- Handle coexistence scenarios between Wi-Fi and Cellular.

📌 Senior Firmware Engineer (Ahmedabad)
🏢 Sasken Technologies
📍 Ahmedabad