Introduction.
In response to market changes, I have developed a wide range of DeFi products to meet various company needs. Notably, I contributed to a service that reached over $50 million in TVL and attracted more than 10,000 active users, leading improvements across both features and system reliability. From web and mobile app development to smart contract engineering and off-chain infrastructure, I’ve gained end-to- end experience in Web3 development. I take pride in adapting flexibly to company demands and growing alongside the organization.
Work Experience.
Tickle
As a fintech startup, I participated as a frontend and smart contract developer in various domains of DeFi services.
Frontend
2020-11 ~ 2023-06
- Kronos DAO & Kairos Cash Web Development
- DeFi 2.0 service maintenance
- Deployed Multicall contract on Klaytn network, reducing RPC calls by 30%
- NEX On-chain Futures Exchange Web Development
- Developed app on Aurora & Optimism chains based on GMX open source fork
- Wallet integration using Wagmi
- Developed and deployed Stats page using Subgraph
- Neutra Finance Delta Neutral Vault Service Smart Contract & Web Development
- Retrieved trading records from other AMMs for strategy backtesting, documentation, and Influx DB storage, visualizing results with Grafana
- Developed and tested Vault contracts using Solidity and Hardhat
- Collected and indexed time-series derivative data using The Graph
- Visualized indexed logs through graphs, developed and deployed Stats page to provide information to users
- Actively participated in weekly competitor AMA sessions with team members for information exchange
Myfolio
Worked as a full-stack developer for an AI service preparing comprehensive student records, which received TIPS investment.
Fullstack
2023-06 ~ 2023-08
- Frontend Development
- Developed complete AI-powered student record service
- Deployed MVP using AWS S3, Cloudfront, Route53 cloud infrastructure
- Backend Development
- Developed overall Nest.js-based API server
- Developed AI-based student activity recommendation service using prompt engineering
- Deployed MVP using AWS serverless infrastructure
CareerNote
Worked as a full-stack developer for an AI-powered career portfolio creation service.
Fullstack
2024-09 ~ 2025-05
- Frontend Development
- Developed complete career portfolio creation service
- Developed PPT creation feature using LLM
- Backend Development
- Developed overall Nest.js-based API server
Projects.
Night Letter
Developed one-to-one letter writing service app
Frontend
2021-06 ~ 2021-12
- Implemented app renewal project UI/UX
- Developed and deployed iOS/Android apps using React Native
- Applied app data state management through Recoil
- Implemented in-app purchases using react-native-iap
Sound Supply Service
Developed artist/album introduction service for the Sound Supply Service label
Fullstack
2024-02 ~ 2024-03
- Frontend Development
- Implemented admin UI/UX using Next.js
- Deployed through Vercel
- Backend Development
- Developed Node.js-based API server using AWS Lambda
- Utilized AWS Lambda, AppSync, DynamoDB for infrastructure
- Introduced Serverless Framework to manage AWS resources as code
Education.
2016.03 ~ 2024.09 Bachelor's Degree of Myongji University, Computer Engineering
Skills.
Certificate & Awards.
- Hanium Competition Completion 2020. 08
- Kubernetes-based Online Shopping Mall MSA Service Project
- Open Source Contributhon Excellence Award 2020.11.30
- Contributed to React Native UI Library "dooboo-ui"
- TOEIC Speaking IH 2024. 01. 13