AI Applications · Full-Stack Products · Automation · Content

Kuanming Chen

AI Application Developer / Full-Stack Product Developer

I turn AI ideas into products that ship — interactive, usable, and built to serve real needs.

Recently I've built, end to end, a full-stack platform, an AI customer-service automation, an original web game, and AI music & video work. The throughline isn't showing off tech — it's integrating creation, data, interaction, and business flow into things people can actually use.

Available for AI application products, full-stack sites, n8n automation, and AI content integration.

View work GitHub AI Create A World

5 core project areas

Full-stack Next.js / MongoDB / Cloudflare

Shipped live business site & AI chatbot

1500+ views on the music-video short

Positioning

Not a single tech demo — the ability to push AI applications all the way to usable products.

My core is product-minded full-stack development for AI: from feature breakdown, data models, and front-end interaction to deployment and operating rules — so the work doesn't stop at a practice page, but can be shown, operated, collect information, and even plug into a real business flow. Before moving into AI and full-stack development, I ran my own contracting business with hands-on, on-site service experience, so I care a lot about requirements, cost, and delivery.

Featured Projects

Flagship / Full-Stack Platform

AI Create A World

An AI creation community platform I built solo and actively operate — spanning images, music, and video. This is my main project: it's not just a gallery; it preserves the model, prompt, and generation parameters behind each piece, so the work doubles as a learning reference, a social space, and a running platform.

My role: product planning, front- and back-end development, data modeling, platform operations, and AI content creation.

Scale: ~100,000 lines of code, 202 APIs, 23 data models, 127 front-end components, 5 scheduled jobs, and 80 database indexes — all built solo.

A full-stack AI creation community unifying images, music, video, and discussion — with a complete membership system, social interaction, and a virtual economy.
Automatic AI-metadata parsing: a hand-written PNG byte-layer metadata parser, plus reverse-engineering of ComfyUI's node-wiring format — using the graph topology to tell positive from negative prompts, then matching against Civitai to auto-fill source links.
Real-time popularity ranking: the same decay formula implemented in both JS and a MongoDB aggregation (computed live at query time with $$NOW), so ranking reflects current heat without per-second writes.
Concurrency-safe points economy: a ledger-based earn / spend / level / subscription system, using dedup keys + partial unique indexes to keep payouts idempotent and double-credit-proof under concurrency.
Production-grade security: JWT algorithm pinning, CSRF protection, spoof-resistant IP rate limiting, a forced key check at boot, and three-strikes auto-suspension with an audit log.
Privacy-aware SEO: a database-driven dynamic sitemap (excluding adult / no-index content), Schema.org structured data, and edge-generated share-preview images.

Next.js MongoDB Cloudflare AI Content

Live platform

AI Game-Asset Toolkit / Browser Tools

AI Game-Asset Toolkit

A set of local, in-browser tools that turn AI-generated game art into usable assets. Currently: background removal and animation-frame alignment — handling black, white, and green-screen backgrounds, transparent fringing, spritesheet jitter, and cross-row drift — then exporting transparent PNGs, grid data, and Godot / Unity import references.

My role: tool product design, Canvas image processing, the interactive UI, alignment logic, engine-export helpers, and the docs.

The background remover supports black, white, green-screen, checkerboard, and custom-color backgrounds, with smart edge cleanup and batch transparent-PNG export.
The frame-alignment tool supports drag-and-drop spritesheets, custom rows/columns, source-frame editing, anchor alignment, and animation preview.
The two tools chain together — cleaned, transparent assets flow straight into the alignment step.
Exports PNG + JSON grid data, and copies ready-to-paste Godot / Unity import settings.

Canvas Image Processing Game Assets Godot / Unity

BG Remover Frame Align BG Remover GitHub Frame Align GitHub

AI Print Preflight Tool / Browser Tool

AI Image Print Preflight & Fix Guide

A local, browser-based tool that makes it clear whether an AI-generated image is print-ready and how to fix it. Upload an image, pick what you're printing it for (poster, business card, banner), and get an instant read on DPI, max print size, bleed, and CMYK color-shift risk — with a red/yellow/green score and step-by-step fixes.

My role: tool product planning, image sampling and DPI/size conversion logic, risk scoring design, UI, and bilingual documentation.

Converts required DPI from the output size and shows the max printable size for posters, cards, banners, and more.
Red/yellow/green overall score with per-item risk notes (resolution, graininess, CMYK shift, etc.).
Step-by-step fix directions: upscaling, vectorizing, cleaning specks, and reworking text.
Fully client-side, images never uploaded, bilingual interface.

Canvas Image Processing Print / Prepress DPI / CMYK

Live Tool GitHub

Fullyjet carpentry & renovation website hero

Real Client Work / Paid Project

Fullyjet Carpentry — Business Site + AI Chatbot

A commercial site for a real carpentry & renovation company — brand, services, case studies, product routing, and an AI lead-handling chatbot. The chatbot is live: it answers questions, detects intent, collects lead details, and pushes them to the owner's phone — AI conversation wired into a real lead-generation flow.

My role: site design and development, brand content, the n8n automation, AI chatbot rule design, and abnormal-case testing.

15 project case-study pages and 200+ case images.
Unified entry points across LINE, phone, Facebook, and the website.
An n8n + Postgres + Gemini + Telegram automated lead pipeline.
The site's bottom-right widget and Facebook DMs are wired to the n8n AI chatbot — you can test the intake and intent-collection flow live.
Hardened through extensive abnormal-conversation testing: message buffering, hand-off deduplication, summary confirmation, output-format safeguards, and human takeover.
Produced case posts, dedicated short videos, and original music to tie the site's case studies, the Facebook page, and the brand's look together.
Helped sharpen the brand's selling points, product direction, and online content so the site, chatbot, and business goals line up.

Business Site n8n Gemini SEO

Website Facebook Try the AI chatbot (bottom-right)

Original Web Game / Playable

Path of the Black Tide

An original, systems-driven web game with complete, genuinely playable core loops. Not just visuals — I designed the combat rhythm, card selection, dice resolution, resonance balancing, and enemy skills from scratch.

My role: game-systems design, front-end interaction, combat balancing, and audio/animation integration.

Cards, dice, resonance, relics, enemy skills, and boss fights form a complete combat system.
Events, map progression, sound, and combat animation support a continuous, playable run.
The core is complete; I'm still tuning art, tutorials, and some monster values.

JavaScript Game UI Combat System Audio

Play it

AI Music Video / Original

"Mosquito Buffet" — Original AI Music Video

An original AI music video I made end to end — concept, AI music and visuals, a unified visual style, and editing. The Facebook short version has reached around 1,500 views, a real signal of audience response.

My role: concept, AI music generation, AI visuals, editing, and short-video packaging for social.

Built from fully AI-generated assets, assembled in the edit.
Anime battle-style visuals, a humorous theme, and a rhythm-driven cut.
A showcase of the content-creation chops behind AI Create A World.

AI Music AI Video Editing YouTube

YouTube

Platform Depth

AI Create A World isn't a landing page — it's a creator platform with a real operating structure.

I built it in four layers — content data, creator pages, community interaction, and platform operations — so what looks like a showcase site actually has full product logic underneath.

Creation-Reference System

Based on whether a piece carries valid metadata, it's auto-routed to either the gallery or the creation-reference view — separating pure viewing from learnable, parameter-rich work.

Creator Profiles

Uploads, collections, image/video/music filtering, rating-based search, and a per-author player — a complete creator hub.

Community & Discussion

Works can be cited in discussion posts, linking the gallery, creation-reference, and community threads together.

Operations & Governance

Built-in points, levels, daily quotas, exposure tokens, popularity scoring, reporting, warnings, delisting, re-rating, cold storage, and pinning.

Original Content

Most of the platform's work is mine — music, images, video, and serialized sets, like a 30+ piece humanized-Pokémon same-frame series.

Craft

What I'm building isn't a single skill — it's the whole pipeline from idea to shipped work.

Product Development

From feature breakdown, data models, APIs, permissions, and exposure rules to content governance, front-end interaction, and deployment — turning work into products that keep scaling.

AI Creation

Image, music, video, and serialized content, with a focus on style control, prompts, generation parameters, and the final result.

Automation

Using n8n, Postgres, Gemini, Messenger/Web chat, and Telegram to design multi-turn dialogue, intent detection, data collection, and lead-notification flows.

Interactive Experience

Game UI, combat pacing, animation, sound, and state logic — making work not just viewable, but playable and felt.

Exploration

Beyond shipped work, I keep testing the business viability of AI applications.

Along the way I've explored local voice-model training, 2D-to-3D / Tripo3D character commercialization, a carpentry measurement-and-quote app, hinoki-wood inventory commercialization, and sound-effect blockchain. Most stayed exploration rather than finished work — after weighing hardware, data volume, subscription cost, post-production barriers, test equipment, and partners' willingness to execute, I focused resources on the more shippable full-stack platform, AI chatbot, and interactive work.

Recent Progress

I've wired AI creation, web development, and automation together.

In this stretch I've completed an AI creation platform, the AI game-asset toolkit, a real business site, an AI chatbot system, an original web game, and music/video work. For me the point isn't just learning the tools — it's pushing them far enough to deploy, demo, and serve real needs.

I'm open to roles and freelance projects in AI application development, AI automation, and full-stack product development — especially with teams that turn ideas into usable products fast.