Principal Software Engineer – Embedded/Firmware

Esyasoft; Kolkata Metropolitan Area; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Esyasoft is seeking an experienced embedded firmware engineer in Kolkata to implement and calibrate metrology algorithms for 1-phase and 3-phase energy measurement. You will integrate DLMS/COSEM standards, design tamper-detection firmware, and develop drivers for SPI/I2C/UART/ADC/RTC and flash memories.

The role requires hands-on C/C++ firmware work with a focus on metrology processing, power management, and system integration.

Qualifications

• 3 to 8 years of hands-on experience in embedded C/C++ firmware development.
• Proven track record in the electricity metering industry, specifically 3-phase meters.
• Deep understanding of the DLMS/COSEM protocol stack.
• Solid experience with metrology processing, power management, and tamper-handling logic.

Responsibilities

• Implement and calibrate metrology algorithms for accuracy in 1-phase and 3-phase energy measurement.
• Integrate and maintain DLMS/COSEM communication protocols and smart grid standards.
• Design firmware logic for robust tamper detection, anti-theft mechanisms, and event logging.
• Write drivers for SPI, I2C, UART, ADC, RTC, and external flash memories.
• Contribute to the design and implementation of new features and functionality.
• Participate in code reviews and provide feedback on best practices.
• Troubleshoot issues related to hardware, software, and system integration.

Skills

Embedded C/C++

Firmware development

DLMS/COSEM

Metering industry knowledge

Tamper detection

Tools

SPI

I2C

UART

ADC

RTC

Flash memory

Job description

ROLE

• Implement and calibrate metrology algorithms for accuracy in 1‑phase and 3‑phase energy measurement.
• Integrate and maintain DLMS/COSEM communication protocols and smart grid standards.
• Design firmware logic for robust tamper detection, anti‑theft mechanisms, and event logging.
• Write drivers for SPI, I2C, UART, ADC, RTC, and external flash memories.
• Contribute to the design and implementation of new features and functionality.
• Participate in code reviews and provide feedback on best practices.
• Troubleshoot issues related to hardware, software, and system integration.

REQUIREMENTS

• 3 to 8 years of hands‑on experience in embedded C/C++ firmware development.
• Proven track record in the electricity metering industry, specifically 3‑phase meters.
• Deep understanding of the DLMS/COSEM protocol stack.
• Solid experience with metrology processing, power management, and tamper‑handling logic.