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Full Stack Developer & AI Hobbyist

I'm Kim Julongbayan I turn ideas into real products

Crafting high-performance web and mobile applications with expertise spanning full stack development, AI integration, and creative technology.

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01 / About

Building things that matter

I'm a full stack developer with deep expertise in web development, mobile applications, data analysis, and AI-powered solutions. Since 2018, I've been shipping products that merge clean engineering with intelligent design.

My toolkit spans the entire stack, from SQL databases and Node.js backends to React Native mobile apps and Docker-containerized deployments. I bring additional depth in AI and automation, including LLM integration, image and video generation with ComfyUI, and building intelligent systems that solve real problems.

Whether it's a blockchain-powered platform, a real-time multiplayer game, or an automated warehouse system, I approach every project with the same obsessive attention to craft and user experience.

0+
Years of Development
0+
Technologies Mastered
Full
Stack Proficiency
AI
& LLM Integration

02 / Skills

Tools & Technologies

JavaScriptTypeScriptReact NativeHTML5CSS3Tailwind CSSNode.jsSQLPostgreSQLMySQLPythonSwiftKotlinDockerGitCI/CDVPSLinux JavaScriptTypeScriptReact NativeHTML5CSS3Tailwind CSSNode.jsSQLPostgreSQLMySQLPythonSwiftKotlinDockerGitCI/CDVPSLinux
LLM IntegrationComfyUIStable DiffusionPrompt EngineeringData AnalysisREST APIsFirebaseReactNext.jsExpressAI AutomationMongoDBVercelGoogle CloudDigitalOceanFigmaPostmanCursorHealthKitVideo Generation LLM IntegrationComfyUIStable DiffusionPrompt EngineeringData AnalysisREST APIsFirebaseReactNext.jsExpressAI AutomationMongoDBVercelGoogle CloudDigitalOceanFigmaPostmanCursorHealthKitVideo Generation

Full Stack Development

End-to-end web applications with modern JavaScript frameworks, Node.js backends, SQL & NoSQL databases, and cloud deployment via Docker and VPS.

Mobile Development

Native and cross-platform iOS & Android applications using React Native, Swift, and Kotlin, from concept to App Store deployment.

AI & Automation

LLM integration, image and video generation with ComfyUI and Stable Diffusion, intelligent automation pipelines, and AI-powered product features.

Data Analysis

Transforming raw data into actionable insights through statistical analysis, visualization, and data-driven decision making.

Web Development

Responsive, performant websites and web apps using React, Next.js, and modern CSS, optimized for speed and exceptional UX.

DevOps & Infrastructure

Docker containerization, CI/CD pipelines, Git workflow management, VPS administration, and automated deployment strategies.

03 / Projects

Selected Work

Web & Mobile App

WordWarz.io

A real-time multiplayer word game available on web, iOS, and Android. Features competitive gameplay, custom avatar systems, and engaging social mechanics, currently in active development.

React NativeNode.jsWebSocketiOSAndroid
wordwarz.io
Blockchain & Web3

Casinore.io

A decentralized, fully secure blockchain platform built with Privy for seamless wallet authentication. Features trustless architecture, on-chain transactions, and a robust security-first approach to Web3 gaming.

BlockchainPrivyWeb3Node.jsDecentralized
casinore.io
E-Commerce & AI

AI-Integrated BikeShop

A full-featured e-commerce platform for a bike shop, enhanced with AI-powered product recommendations and intelligent search. Built as a thesis project demonstrating LLM integration in online retail.

ReactNext.jsAI / LLMVercel
bikeshop
Enterprise Software

Automated Warehouse Inventory System

Developed during OJT, a comprehensive automated inventory management system for warehouse operations. Features real-time stock tracking, automated reorder triggers, and detailed analytics dashboards.

SQLNode.jsDatabaseAutomation
inventory system
Swipe

04 / Journey

Experience

2022 — Present

Independent App Developer

Full Stack & Mobile

Building and shipping mobile and web applications independently, including WordWarz.io, Casinore.io, and fitness apps. Full ownership of product lifecycle from ideation to deployment on iOS and Android.

Capstone Project

E-Commerce Developer

Online Retail Platform

Built and maintained e-commerce platform features including product catalog and checkout flow. Managed version control with Git/GitLab for collaborative development. Conducted QA testing and debugged frontend/backend issues across devices.

OJT

Dashboard Analytics Developer

Mining Company

Developed real-time analytics dashboards for monitoring mining operations and production metrics. Created data visualization components with SQL queries for KPIs and operational data. Ensured data accuracy through validation, quality checks, and anomaly detection.

2018 — 2020

Web Development

Frontend & Backend

Started professional journey in web development, building responsive websites and learning core technologies including HTML, CSS, JavaScript, and backend fundamentals with Node.js and databases.

Open to remote work — flexible schedule, reliable setup

05 / Contact

Let's build something great

Open to collaborations, freelance work, and exciting opportunities.