Embedded Systems Engineer - C/C++ Developer

VO THANH LOI

EMBEDDED SOFTWARE ENGINEER

+843******** **********.*****@*****.*** District 12, Ho Chi Minh City PROFESSIONAL SUMMARY

Final-year Electronics & Telecommunications student awaiting graduation with a strong foundation in Embedded Systems and C/C++ programming. With an engineering mindset and hands-on experience with Microcontrollers, I am eager to apply my technical skills to contribute to real-world projects and build a long-term career as an Embedded Engineer EDUCATION

University of Transport Ho Chi Minh City 10/2022 - 06/2026 Electronics and Telecommunication

TECHNICAL SKILLS

Programming: C/C++, Python

Microcontroller: STM32F103C8T6, ESP32, Experience with FreeRTOS (on STM32F103) Tools: Arduino IDE, STM32CubeMX, Keil uVision, Proteus, Git Operating Systems: Linux

Firmware Development: Basic bare-metal programming and register-level configuration (GPIO, Timer, UART, ADC), Bootloader and flash memory handling

Communication Protocols: UART, SPI, I2C

Peripherals: Timers, PWM, ADC, DMA, Interrupts (ISR) Technical Documentation: Able to read and understand MCU Reference Manuals & Datasheets WORK EXPERIENCE

G9 R&D Center 2/2025 - 5/2025

Position: Embedded Software Intern

Responsibilities:

• Supported the development of firmware modules for IoT devices, focusing on reading sensor data and maintaining connectivity.

• Assisted in hardware testing and prototype assembly: Verified PCB connections and signal integrity using a Multimeter and debugging tools to prepare hardware for the software team.

• Performed code debugging & testing: Analyzed logs to identify minor bugs related to Wi-Fi stability and sensor readings; worked with the team to verify fixes.

• Followed development processes: Used Git for source code version control and updated internal documentation for testing steps. PROJECTS

PID TEMPERATURE CONTROL SYSTEM 6/2023 - 7/2023

Description:

• Implemented a Digital PID Controller executed via periodic Timer Interrupts to regulate temperature, achieving stability within 0.5 C with minimal overshoot.

• Interfaced with Hardware Peripherals: Read temperature/humidity data from DHT22 sensors and displayed real-time values on a 16x2 LCD via I2C protocol.

• Controlled Power Output: Generated PWM signals to drive Solid State Relays (SSR, 0–100% duty cycle) for the heater and handled user setpoint adjustments using buttons with hardware debouncing. IOT SMART ACCESS CONTROL SYSTEM 9/2024 - 10/2024

Description:

• Developed a Two-Factor Authentication System combining RFID scanning (MFRC522 via SPI) and a 6-digit passcode keypad.

• Programmed System Logic: Implemented password masking on the I2C LCD and controlled the SG90 Servo motor with an auto-relock feature for security.

• Optimized Feedback & Response: Utilized Timer Interrupts for non-blocking Buzzer/LED status indicators and optimized code to achieve a system response time of <200ms.

ADDITIONAL SKILLS

English: Ability to write and read technical documents, basic communication Soft Skills: Troubleshooting & Problem Analysis, Eager to learn new technologies, Proactive attitude.

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