Firmware Engineer

2 months ago

Bangalore, India Mettsenia solutions pvt ltd Full time

Job Summary :

We are seeking an experienced Firmware Engineer to join our IoT/IIoT team. The ideal candidate will have hands-on experience in LoRaWAN firmware development, MQTT protocol, and AWS IoT Core integration, with a strong background in working with STM32 and ESP32 processors. You will be responsible for developing, testing, and deploying firmware solutions for devices utilizing digital I/O, RS485 communication, pulse counting, and analog sensors (including 4-20mA). Your role will be critical in advancing our IoT solutions, and you should be comfortable working across various hardware interfaces.

Key Responsibilities :

- Design and develop firmware for LoRaWAN devices using STM32 and ESP32 processors.

- Implement and integrate the MQTT protocol for IoT communication.

- Experience with up chirpstack server

- Work with AWS IoT Core to connect, manage, and secure IoT devices.

- Develop drivers for RS485 and digital I/O communication protocols.

- Interface with pulse counting devices, analog sensors (4-20mA), and digital inputs/outputs.

- Optimize firmware for FreeRTOS environments.

- Collaborate with hardware teams to design solutions that integrate with analog and digital sensors.

- Optimize power consumption and performance for IoT devices.

- Test, debug, and ensure reliability and robustness of firmware across a variety of industrial environments.

Required Skills and Qualifications :

- Bachelor's degree in Electronics, Computer Science, or a related field.

- 2+ years of relevent experience in firmware development, especially in the IoT/IIoT domain.

- Expertise in LoRaWAN protocol and network architecture.

- Hands-on experience with STM32 and ESP32 processors, and FreeRTOS.

- Proficient in programming languages such as C/C++ and embedded systems.

- Experience with RS485 communication, pulse counting, and interfacing analog sensors (4-20mA).

- Familiarity with digital I/O systems and sensor interfaces.

- Strong understanding of power management in IoT devices.

- Experience with MQTT protocol and AWS IoT Core.

- Knowledge of testing and debugging tools for embedded systems.

- Experience in developing solutions for energy or water metering, and process automation is a plus.

- Excellent problem-solving skills and ability to work in a fast-paced environment.

- NB-IoT Communication Protocol

Expertise understanding of NB-IoT :

- Strong knowledge of NB-IoT architecture, 3GPP standards, LPWAN (Low Power Wide Area Network) technologies.

- NB-IoT Module Experience: Hands-on experience with NB-IoT modules (e.g., Quectel, SIMCom, Sierra Wireless, u-blox).

- AT Commands: Experience in using AT commands for configuring and managing NB-IoT modules.

- Cellular IoT Communication: Understanding of cellular communication protocols (LTE-M, NB-IoT, GSM).

Preferred Qualifications :

- Experience with industrial IoT applications.

- Knowledge of cloud services and edge computing.

- Familiarity with other wireless communication protocols such as BLE, ZigBee, etc.

- Understanding of IIoT security standards and best practices.

Benefits :

- Competitive salary and performance bonuses.

- Flexible working hours and remote options.

- Health and wellness benefits.

- Opportunities for professional growth and development.

(ref:hirist.tech)

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