- Create more than 10 websites for promotions and limited-time activities by Laravel & Vue. - Create more than 3 CRM systems by Laravel & Vue. - Maintained project quality by implementing automated testing with PHP Unit and enforcing standards through Git Hooks. - Monitored application performance and system health using Grafana, Icinga, and Elastic to ensure stability and reliability. - Streamlined development processes by integrating YouTrack for task management with GitLab for source code versioning and CI/CD. - Designed and implemented custom packages for version updates, reducing deployment time and improving code reusability for all project teams. - Implemented key design patterns such as Singleton, Decorator, Builder, and Template, combined with clean code principles, to streamline application logic and reduce complexity. - Provided technical guidance and mentorship to junior developers.

- Built RESTful APIs using Laravel for use in desktop/tablet/mobile applications. - Built micro-service by golang and maintained by Kubernetes. - Built 5 lottery game servers by PHP. - Built a chat system by PHP & WebSocket & Vue. - Integrated Third-party APIs into existing applications to extend functionality.