Chavis Keawrat

Full-Stack Developer passionate about solving complex problems and building reliable systems.
Experienced in developing high-accuracy Payroll systems and Real-time POS systems, with a strong focus on clean code, performance, and continuous learning.

👨‍💻 Work Experience

2024–Present

Bookengine.com

TITANSJET – POS System

Built a real-time order management system using Socket.io to synchronize data between order points and kitchen displays
Developed a Task Tracker supporting multi-level task assignment with Kanban board workflow management

Livepocket – HRM & Payroll System

Designed and implemented validation logic for complex OT calculation rules, fully tested with PHPUnit
Developed a document management system using PdfMe with multi-level approval workflows and file compression via Pako
Implemented secure salary adjustment features with encryption and decryption
Integrated real-time notification delivery using Firebase Cloud Messaging (FCM)