Designed and delivered 4 production-ready mobile applications for Samsung's Tizen OS platform using C++14 and native SDK, supporting 200K+ users

● Pioneered a computer vision-based facial recognition system using OpenCV and TensorFlow Lite, achieving 80% accuracy and reducing user authentication time.

● Developed core telecom billing modules in Java Spring Boot, automating 5M+ monthly transactions.

Developed LSI chipset firmware for Samsung Galaxy smartphones (C/C++), optimizing memory allocation and cutting power use by 12%.

Built a Python log analysis tool using regex for telecom call drops, achieving 95% detection and reducing troubleshooting time by 75%.