Full-Stack Developer · Web3 Builder

JOOWON

KIM

I'm a full-stack developer and Web3 builder focused on creating practical digital products.

6+
Years Experience
50+
Projects Shipped
20+
Web3 Projects
Expertise

What I
build.

Hover each area to explore.

01

Web Development

20+Projects Delivered

High-conversion websites, landing pages, corporate platforms, and Web3 frontends built for performance and UX.

ReactNext.jsTypeScriptTailwind
02

Platforms & Backend

10+Production Platforms

Full-stack SaaS products, internal tools, and API-driven dashboards — from architecture to deployment.

Node.jsNestJSPostgreSQLAWS
03

Web3 & Blockchain

20+Blockchain Projects

Smart contracts, non-custodial wallets, DeFi platforms, tokenomics design, and multi-chain integrations.

SolidityEthers.jsAAEVM
04

Planning & PM

30+Projects Managed

End-to-end project planning, proposal writing, requirements definition, and stakeholder coordination.

RoadmappingProposalsAgileFigma
05

SEO / AEO / GEO

10+Sites Optimized

Traditional SEO, Answer Engine Optimization for AI assistants, and Generative Engine Optimization for LLM visibility.

Technical SEOAEOGEOSchema

Tech Stack

React
Next.js
TypeScript
Tailwind
Framer
JavaScript
Solidity
Ethereum
Web3.js
React
Next.js
TypeScript
Tailwind
Framer
JavaScript
Solidity
Ethereum
Web3.js
React
Next.js
TypeScript
Tailwind
Framer
JavaScript
Solidity
Ethereum
Web3.js
Node.js
NestJS
Java
Python
PostgreSQL
MongoDB
MySQL
Redis
Docker
AWS
Node.js
NestJS
Java
Python
PostgreSQL
MongoDB
MySQL
Redis
Docker
AWS
Node.js
NestJS
Java
Python
PostgreSQL
MongoDB
MySQL
Redis
Docker
AWS
Selected Work

Selectedwork.

[37 projects — 2019 → 2026]

No.Project
01

Multi-Token Smart Contract Development

02

Exchange Listing Support

03

UNIDECA Website

04

Hun&Hyun Website

05

E******* Wallet

06

S********* RWA Wallet Platform

07

TheBlockLink Web3 Event Platform

08

Medical Platform App

09

RankFit

10

WKMLCRAFT Portfolio & Commerce Platform

11

Medical Website SEO/GEO/AEO Projects

12

Web3 Company Profile Production

13

Veraclinic Website

Experience

Where I've
worked.

2025

[01 / 04]May 2025 – Present

UNIDECA

15 months
UNIDECA
Current

May 2025 – Present

Full-Stack Developer & Web3 Project Lead

  • Built and shipped 30+ projects spanning Web3 wallets, token platforms, smart contracts, exchange listings, and full-stack SaaS — largely solo.
  • Developed and operated RankFit, an AI-powered SEO/AEO/GEO analysis SaaS used internally for hospital website optimization across multiple clients.
  • Ran end-to-end Web3 marketing campaigns, produced multilingual pitch decks and company profiles, and organized 4 private blockchain networking events totaling 400+ attendees.
Web3SolidityNext.jsNestJSSEO/AEO/GEORankFit
Trillionslab

Aug 2021 – Sep 2024

Senior Blockchain Researcher & Product Manager

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

Feb 2020 – Feb 2021

Java Backend Developer

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

Aug 2019 – Jan 2020

Java Backend Intern

  • Built resilient RESTful APIs for a microservice-based hotel management system.
  • Practiced strict backend architecture patterns and unit testing with Spring Boot.
  • Gained foundational experience in enterprise-style CI/CD development workflows.
MicroservicesSpring BootUnit Testing
Available — Full-time · Freelance · Collaboration
Let's
work
together.

Whether it's a full-time role, a startup project, or a one-off build —

if you think we'd work well together, let's talk.

@0122wndnjs·Seoul · Open to Remote

Designed & Built by Joowon Kim © 2026