Guru Saran

Embedded Systems engineer with 1+ year of industry experience developing firmware for IoT and low-power devices. Proficient in bare-metal, C, RTOS-based task architecture, and hardware-level debugging.

Firmware Engineer - Qmax Systems - Chennai

(2025-08 - 2026-02)

• Engineered IoT water-level monitoring system on ESP32 + SIM800L (GSM) with MQTT & Node-RED, enabling real-time remote monitoring and automated relay control across field deployments.
• Designed FreeRTOS firmware architecture with multi-task scheduling, event-driven triggers, and watchdog management — improving system reliability and responsiveness.
• Debugged nRF52-based low-power BLE transmitter board; diagnosed and resolved power-rail instability causing intermittent resets under load.
• Profiled power consumption across transmission intervals, findings informed firmware-level duty-cycle optimisations for battery-operated deployments.

Embedded Systems Intern - Qmax Systems - Chennai

(2025-02 - 2025-07)

• Implemented device drivers for I2C, SPI, and UART peripherals; debugged communication failures in IO expanders and DAC ICs by reading register maps and tracing signals with a logic analyser.
• Wrote characterisation firmware for motor driver ICs to measure current draw at varying PWM duty cycles, producing test data used in BOM selection.
• Created schematic symbols and performed schematic capture for production hardware using Altium Designer.

B.Tech - Electronics & Communication (specialisation: Data Science) - SRM Institute of Science and Technology (SRMIST) (2020-09 - 2024-06)