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Mariyappa H. — Mid-Level Embedded Firmware Engineer from India

Mariyappa H.

Mid-Level Embedded Firmware Engineer

India No experience yet
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About

Mariyappa H is an accomplished Embedded Firmware Developer based in Bengaluru, India, with a keen focus on IoT technologies. A graduate in Electronics and Communication Engineering, he has garnered significant expertise in developing firmware for ARM-based microcontrollers, such as STM32 and ESP32, especially for IoT applications. At Supram Technologies, he has been integral in creating and optimizing firmware solutions, leveraging his skills in Embedded C/C++ and protocols like UART, I2C, and SPI. His role involves close collaboration with hardware engineers to troubleshoot and resolve integration challenges using advanced tools like JTAG/SWD, oscilloscopes, and logic analyzers. Before his current position, Mariyappa held roles at Scientegra Labs and Dev Minds, where he developed bare-metal firmware and Wi-Fi-based systems, including sensor integrations and state-machine logic implementations. He has also worked on significant projects involving sensor fusion and autonomous navigation systems, showcasing his competence in low-power design and real-time data processing. Proficient in version control systems, he continuously contributes to Git-based repositories, underscoring his commitment to innovation in embedded system engineering.

Experience

  • Firmware Engineer

    Supram Technologies · 2026 — Present
    Developed firmware in Embedded C for ARM-based IoT products, working on UART, I2C, SPI communication interfaces, and sensor drivers. Implemented and validated device drivers for sensors and actuators while configuring GPIO, ADC, timers, and interrupt service routines for real-time control. Debugged hardware and firmware integration issues using logic analyzers, oscilloscopes, and JTAG/SWD. Collaborated with hardware engineers during schematic review, board bring-up, and peripheral validation. Maintained firmware repositories under Git version control and participated in code reviews.
  • Embedded System Engineer

    Scientegra Labs · 2024 — 2025
    Created bare-metal firmware for the STM32H743 (ARM Cortex-M7) utilizing STM32CubeIDE along with HAL/LL drivers for GPIO, timers, and interrupt service routines for real-time control. Engaged in register-level debugging via JTAG/SWD and confirmed peripheral timing using an oscilloscope. Developed state-machine logic for a button-controlled LED driver system, validating against hardware test cases.
  • Embedded System Engineer

    Dev Minds · 2024 — Present
    Engineered a Wi-Fi-based home automation system on ESP32, focusing on relay control, IR sensor integration, and timer-based state logic. Executed Over-The-Air (OTA) update flow for the ESP32 and verified communication through UART serial console. Integrated wireless connectivity utilizing the ESP32 Wi-Fi stack, validating MQTT-style message passing over TCP/IP.

Skills & Expertise

Education

  • B.E — Electronics and Communication Engineering
    Vemana Institute of Technology · 2021 — 2025

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