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Sozib
@sozibalmamun
Embedded Firmware, IoT Professional
Bangladesh
Inglese, Bengali
Chi sono
I’m an Embedded Firmware Engineer with 5 years of industry experience, specializing in ESP32, STM32, AVR, Jieli, and IoT firmware development. I’ve contributed to products deployed across Bangladesh, China, Malaysia, Thailand, and other markets. My expertise includes Biometric IoT, ESP32 BLE, Wi-Fi, IoT MQTT, data loggers, thermal printers, and industrial devices. I use professional platforms like ESP-IDF, STM32CubeIDE, and Microchip Studio to deliver efficient, reliable, and production-ready firmware.
Competenze
Sozib
offline •
Tempo di risposta medio: 1 ora
Consulta i miei servizi
Sistemi integrati e IoT
I will be your embedded software expert for esp32, stm32, arduino and iot firmware
Sistemi integrati e IoT
I will develop your esp32 iot firmware
Portfolio
Esperienza lavorativa
Embedded Software Engineer
printernoble • Full time
May 2024 - Present • 2 yrs 4 mos
* Designed and developed embedded firmware for thermal label printers (2–4 inch) with Bluetooth SPP, BLE, USB, and Wi-Fi connectivity. * Developed a multi-interface command processing architecture to safely handle simultaneous communication and reliable print operations. * Implemented NVS-based persistent settings and automatic sensor ADC calibration to improve reliability and reduce production calibration time. * Integrated and optimized firmware for multiple printhead variants, ensuring stable performance and consistent print quality. * Developed biometric IoT face-recognition attendance devices from scratch using ESP-IDF and custom embedded components. * Integrated sensors, camera, cloud communication, data storage, and device-control modules for a complete IoT solution. * Collaborated with hardware, backend, frontend, and mobile teams to ensure reliable system integration and secure data communication. * Performed extensive hardware/software debugging, testing, optimization, and troubleshooting to improve system reliability and performance.
Embedded System Engineer
Inovace Technologies • Full time
Aug 2023 - May 2024 • 9 mos
* Designed and reviewed schematics and PCBs for industrial and IoT products, following engineering best practices. * Developed complete firmware for People’s Meter TRP data logger, including sensor integration, data processing, and communication. * Designed snubber circuits and implemented hardware modifications to improve device stability and reliability. * Developed Tipsoi biometric attendance & access control system with fingerprint, RFID, Wi-Fi, GPRS, and LAN connectivity. * Implemented dual authentication, touch keypad, bootloader updates, and log-resend mechanisms for reliable field operation. * Integrated third-party industrial sensors/devices with custom hardware and software systems. * Collaborated with hardware, firmware, backend, QC, and project management teams to deliver complete solutions. * Performed testing, debugging, performance optimization, and technical troubleshooting, including client-requested modifications.
