Hello, i am
Gia Huy
Backend Developer with nearly a year of hands-on experience in developing and maintaining web applications using PHP. Equipped with a solid foundation in RESTful API design, database schema modeling, and system architecture.
Most Use
Skills
Work Experience
Digityze Asia
June 2025 - May 2026PHP Backend Developer
Education
Van Lang University
2021 - 2025Bachelor's Degree of Software Engineering
I improve 1% better every day.
My Experience
Back-end Developer
DIGITYZE ASIA CO., LTD
May 2025 - Jun 2026
Ho Chi Minh City
POS MANAGEMENT SYSTEM
Client: Menas Co.Team: 5 members
Participated in the development and maintenance of a multi-branch POS management system, focusing on feature enhancements, performance optimization, and complex business logic implementation based on client requirements.
Key Contributions
- Built the Daily Reports feature, applying Queue Job to separate report-writing logic from the checkout flow, enabling real-time business data tracking while reducing performance impact during checkout.
- Optimized the Excel/CSV product import flow using Chunking and Bulk Insert, resolving N+1 Queries and timeout issues, reducing processing time by around 60% from 30s to 10s for files with over 20,000 records.
- Maintained and enhanced the Voucher module by implementing complex discount rules based on product groups and customer groups, then integrating them into the payment flow.
- Implemented PIN Approval authentication to securely authorize sensitive features such as viewing reports, opening cash drawers, and other permission-required actions.
- Integrated barcode scanner logic into the POS system, helping cashiers process sales and input products faster.
- Developed responsive UI/UX for touch-screen POS displays.
Laravel 9JavaScriptjQueryAjaxMySQLTailwind CSS
LEARNING MANAGEMENT SYSTEM
Team: 4 members
Key Contributions
- Integrated Microsoft Graph API to implement OAuth 2.0 Authentication and automatically create Microsoft Teams meeting rooms functionality.
- Built data synchronization APIs between CRM and LMS, ensuring data security and integrity through Idempotency Keys and Signature.
- Developed a multi-branch architecture using CodeIgniter Hooks, supporting automatic dynamic routing generation and switching database connections based on each branch.
- Optimized the student profile import flow by separating time-consuming tasks such as account creation and email sending, then processing them asynchronously through Ajax APIs, reducing system waiting time.
- Integrated SCORM standard into the Lesson module, supporting learning content management based on the e-learning standard.
CodeIgniter 3OAuth 2.0Microsoft Graph APIJavaScriptjQueryAjaxMySQL