👋 Welcome to my universe

JOOWON KIM

Crafting scalable Web3 experiences and modern frontend applications.

joowon@portfolio ~ zsh
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Capabilities

Core Expertise

Delivering robust, end-to-end solutions combining elegant frontend interfaces with powerful Web3 architectures.

01

Web3 & Corporate Websites

High-conversion landing pages, token sites, and corporate platforms with interactive 3D elements and modern aesthetics.

02

Token & Smart Contract

Custom token contracts across EVM chains with secure architecture, thoroughly tested and optimized for low gas fees.

03

Tokenomics & Whitepaper

Technical whitepapers and token economic system design, providing clear utility and long-term sustainable models.

04

Full-Stack Platforms

Production-ready web platforms from robust scalable backend architectures to dynamic highly-responsive frontend systems.

05

Wallet & Key Management

Custodial and non-custodial wallet architecture, AA (Account Abstraction), and secure external integrations.

06

Blockchain Integration

Smart contract integration, listening to on-chain data events, and establishing robust Web3 infrastructure.

Showcase

Selected Works

Explore my portfolio of applications, smart contracts, and full-stack solutions organized by domain.

6

Web3 Platforms

3

Wallet & Token

8

Web Applications

4

Other Systems

Journey

Professional Experience

A timeline of building scalable systems, from foundational enterprise Java backends to cutting-edge Web3 platforms.

UNIDECA

UNIDECA

Blockchain Project Lead / Full-Stack Developer

May 2025 – Present
  • Leading end-to-end Web3 projects including scalable infrastructure, token ecosystems, and non-custodial wallet development.
  • Developed high-conversion corporate and client websites leveraging React, Next.js, and TailwindCSS.
  • Ensuring robust smart contract security and maintaining highly available platform backends.
Web3SolidityReactNestJS
01
Trillionslab

Trillionslab

Senior Blockchain Researcher / Product Manager

Aug 2021 – Sep 2024
  • Led comprehensive blockchain platform development, technical consulting, and extensive architectural documentation.
  • Engineered NFT dApps, tokenized investment platforms, and innovative OTT service prototypes.
  • Managed specialized government-funded R&D projects and international BaaS collaborations.
NFTProject ManagementFullstackBaaS
02
Delta Dental of Michigan

Delta Dental of Michigan

Java Backend Developer

Feb 2020 – Feb 2021
  • Architected and developed Spring Boot APIs serving mission-critical enterprise dental insurance systems.
  • Implemented high-throughput data processing pipelines and automated internal reporting services.
  • Collaborated within a large-scale agile backend environment to optimize legacy codebase.
Spring BootJavaEnterprise APIsAgile
03
Apolis

Apolis

Java Backend Intern

Aug 2019 – Jan 2020
  • Built resilient RESTful APIs for a microservice-based hotel management system.
  • Practiced strict backend architecture patterns and extensive unit testing methodologies with Spring Boot.
  • Gained foundational hands-on experience in enterprise-style CI/CD development workflows.
MicroservicesSpring BootUnit Testing
04
Arsenal

Technical Arsenal

A carefully curated stack of modern technologies empowering scalable Web3 architectures and immersive frontend experiences.

Frontend & UI

React
Next.js
TypeScript
Tailwind CSS
Framer Motion
GSAP
JavaScript

Web3 & Blockchain

Solidity
Ethereum
Web3.js
Smart Contracts

Backend & Systems

Node.js
NestJS
Java
Python
PostgreSQL
MongoDB
MySQL
Docker
AWS
Firebase
CONNECT

Let's build something
extraordinary.

I'm currently open to new opportunities. Whether you have a visionary project or just want to chat tech, my inbox is always open.

Gmail

0122wndnjs@gmail.com

Telegram

@wndnjs0122

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