> boot: portfolio.sys

> whoami

Jhon Christian Garcia

Full Stack Software Engineer - Philippines 

> cat about.txt

Backend specialist focused on building scalable, maintainable, secure-by-design systems, with solid fundamentals for crafting good front-end UX.

[ resume.pdf ]

$ work --history

RUNNING

Software Engineer · Aug 2025 → present

  • > Own backend services end-to-end on Node.js and Express, designing distributed GraphQL subgraphs that improved modularity and scalability across the platform.
  • > Deploy and operate infrastructure on Google Cloud Platform (Cloud Run, Cloud SQL, Cloud Storage, Cloud Functions), with recent hands-on work extending into AWS.
  • > Drive CI/CD reliability by improving CircleCI pipelines and automation, and led the modernization of a legacy system.
  • > Optimize PostgreSQL performance and enforce type-safe data access with Prisma ORM.
  • > Maintain 100% test coverage through TDD with Jest and React Testing Library, resolving critical production issues in high-traffic environments.
  • > Build and maintain a cross-platform React Native mobile app alongside responsive React and TypeScript front-ends.

Software Engineer · Jun 2024 → Aug 2025

  • > Built and maintained a Laravel backend, structuring controllers, models, and services to keep business logic organized as the application grew.
  • > Designed and evolved MySQL schemas and relationships to support full-stack functionality, keeping data flow reliable between services.
  • > Developed and enhanced front-end features with React, TypeScript, and Material UI, focused on responsive design and usability.
  • > Led end-to-end test automation with Playwright to guard application reliability in production.

React Native Mobile Developer · Apr 2024 → Jun 2024

  • > Engineered a full-featured React Native point-of-sale application from the ground up and delivered a production-ready product actively used by the client.

$ history --education

Bachelor of Science in Computer Engineering · Aug 2020 → Aug 2024

> This is where the foundation of my software engineering journey was built — from the basics of programming to system design, networking, data structures, algorithms, and the basics of cybersecurity.

$ ls /skills/current

> Languages

-TypeScript
-Python
-PHP

> Backend

-Node.js
-Express
-Laravel
-FastAPI
-GraphQL
-Apollo

> Cloud & DevOps

-Amazon Web Services (AWS)
-Google Cloud Platform
-CircleCI
-Docker
-Linux
-Bash
-Terraform
-Git

> Databases & ORM

-PostgreSQL
-MySQL
-Prisma

> Frontend & Mobile

-React
-React Native
-Next.js
-Material UI
-Tailwind CSS
-shadcn/ui
-React Query
-Jotai

> Testing

-Playwright
-Jest
-React Testing Library

> AI & LLM Development

[OpenAI Agents SDK][Pydantic AI]

$ ls /skills/past

-Redux
-MongoDB
-Supabase
-Firebase

$ ps --project

[ NODE_DEMUX ]OK
IoT Demux Screen 1IoT Demux Screen 2IoT Demux Screen 3

Demux — An IoT Pet Feeder Management App

An IoT-based pet feeder management app built with React Native and Expo. This app allows users to control and monitor our very own custom-built IoT pet feeder, which is powered by an ESP32 microcontroller. Features include real-time feeding, scheduling, portion control, notifications, real-time monitoring via the camera built into the device, all integrated with Firebase and Node.js for our CRON job.

deps:[React Native][Expo][Firebase][Node.js][ESP32]

chat with christian_ai