Connectivity-resilient PWA with deep workout/nutrition relational tracking and Stripe payment; built on a type-safe Next.js/NestJS core (tRPC, Drizzle, PostgreSQL, Jest). Memory-efficient polyglot distributed backend: Python (FastAPI) with multimodal AI (Whisper/Llama3/Gemini) for voice planning and food analysis, with DuckDB for data-driven workout predictions, plus a Go worker for media processing and backed by Redis. Infrastructure via Docker, GitHub Actions CI/CD, and a Linux VPS behind Cloudflare/Nginx.

Rebuilt a legacy system into a structured PHP CodeIgniter 4/Vanilla JS. Translated clients fiscal rules into a clean MVC/RESTful architecture and refactored a "spaghetti-schema" MySQL (broken joins/logic). Spearheaded Composer for automated migrations/dependencies and GitHub Actions CI/CD—slashing deployment costs and establishing scalable standards while shipping new features.

Architected a three-tier IoT ecosystem bridging hardware and software via a Node.js/Express/MongoDB hub. Developed a production-ready React Native (TS) app featuring type parity, Socket.io, and Firebase (Auth/Push). Engineered ESP32 firmware (C++/PlatformIO) using encrypted MQTTS via RabbitMQ for secure, bi-directional communication. Optimized system reliability with RFID access control, delivering a seamless, high-performance hardware-to-mobile experience.

Unified TypeScript Monorepo with tRPC-style type safety across a Node.js/Socket.io backend and dual React/Vite frontends (Web/PWA). Delivered a low-latency, cross-platform experience via real-time state synchronization and seamless event handling. Managed by PM2, with Jest testing and GitHub Actions CI/CD.

Architecture-focused (Factories/Patterns) using Express & MongoDB.

Mario-style arcade platformer with manual Vanilla JS physics.