Tech Stack•Solidity, Node.js(NestJS), AWSMain Tasks•Database Refactoring and API Optimization considering future business directions•Design and Implementation of Common Modules and Logging Systems using Datadog•AWS Network Restructuring and Resource Optimization to enhance security and reduce costs by approximately 50-60%•Managed Argo CD and EKS clusters for continuous deployment•Preemptive Traffic Testing with K6 and AWS Infrastructure Management to handle traffic surges•Blockchain Event Subscription and Collection Whitelisting to manage the NFT marketplace•Flow Design for NFT Payment and Minting (Airdrop)•Lead Efficient Communication and Schedule Management with teammates across projects

Tech Stack•Solidity, Node.js(NestJS), AWSMain Tasks•Developing ERC721 contracts tailored to each project's requirements (include minting and ChainLink)•Generating images and managing metadata for ERC721•Designing and developing the backend for Konkrit (NFT marketplace)•Writing test codes for contract (achieving 100% coverage) and modularizing for cooperation

Tech Stack•Solidity, Node.js, ReactMain Tasks•Developed a Discord bot for user management, games, and authentication•Integrated Web3 into a React frontend•Built event pages for NFT projects with React and Web3 integration

Tech StackNode.js(NestJS), AWSMain Tasks- Renewal for 'Waganda' App, a mobile location-based augmented reality (AR) service.- Develop API for Smart order (similar to Starbucks siren order) service.- Designing API, database, AWS infrastructure, and CI/CD pipeline structure.- Smooth communication and meetings with PM and designers.

Tech StackNode.js(express), MySQLMain Tasks- Refactoring for B2B insurance subscription service.- Develop of simple travel insurance subscription service.- Develop of service and admin page for user's claim submission.