Software Systems Engineer focused on building robust, scalable backend architectures, multi-tenant platforms, automated microservices, and secure API ecosystems.

I specialize in modern PHP ecosystems (Laravel, Filament, TALL stack), Node.js services, multi-database management, and custom security implementations (JWT, RSA Encryption, RBAC). I prioritize high performance, operational efficiency, and strict technical standards.

• Backend & Frameworks: PHP 8.x, Laravel, Filament v5, Node.js, Express, REST APIs.
• Databases & Caching: MySQL, PostgreSQL, PDO, Symfony Cache, Redis.
• Security & Architecture: Dual-Token JWT, RSA Payload Encryption, CSRF, Rate Limiting, Multi-Tenancy Architecture.
• Microservices & Real-time: Puppeteer / Headless Chromium, WebSockets (Workerman).
• DevOps & Tooling: Docker / Docker Compose, Composer (PSR-4), Git, Linux (Arch / Ubuntu).

Multi-tenant web platform designed for disaster relief collection centers to manage isolated inventories, inter-center transfers, dispatches, and real-time statistics.

• Tech: Laravel 15, Filament v5, MySQL 8.4, Docker Sail, DomPDF, Spatie Permissions.
• Key Work: Architected a lightweight custom multi-tenancy layer using Eloquent Global Scopes for complete data isolation per organization. Built exportable PDF/Excel engines and interactive analytics dashboards.

High-security REST API exposing core business logic for enterprise gas distribution, fully decoupling the backend from front-end/mobile clients.

• Tech: PHP 8.x (Pure / PSR-4), Dual-DB MySQL (PDO), JWT, OpenSSL RSA-OAEP, Symfony Cache.
• Key Work: Designed a dual-token JWT authentication system with RSA-OAEP payload encryption for mutating endpoints. Implemented IP-based rate limiting, anti-brute-force controls, and custom module routing.

High-performance REST microservice that processes structured JSON payload data into high-resolution PNG images of dental odontograms for electronic medical records (EMR).

• Tech: Node.js 20, Express, Puppeteer (Headless Chromium), Docker, PM2.
• Key Work: Implemented a persistent singleton browser architecture with a worker pool for concurrent batch rendering. Standardized auto-detection for adult (32-teeth) vs. pediatric (20-teeth) FDI dentition systems.