InfraBlockchain 개발 (EOSIO-based), DID 솔루션 개발, 백엔드, 프론트엔드 Bitcoin / Ethereum / EOSIO blockchain technology research

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Full-stack software developer, Blockchain technology professional, Blockchain Dapp Developer * Author of YOSEMITE Public Blockchain / PoT(Proof-of-Transaction) Technical White Paper https://goo.gl/354BUK * Lead Developer of Yosemite Public Blockchain (https://yosemitex.com) * Lead Developer of Yosemite Card (https://yosemitecardx.com) * Designing and developing Crypto Exchange YOSEMITE Alpha (Hybrid-style Ethereum-based crypto exchange system) http://crypto-alpha.yosemitex.com * BlockchainDay Conference (Seoul) Speaker("Ethereum Dapp" Session), Panelist https://goo.gl/BnNNi8 * Designing and developing Asset Exchange YOSEMITE Service (Hybrid-style Ethereum token exchange system) http://alpha.yosemitex.com * Author of Asset Exchange YOSEMITE Technical Whitepaper https://goo.gl/ErcgaJ * Ethereum Decentralized Exchange Dapp Presentation at Seoul Ethereum Meetup (2017.4) https://goo.gl/4UaYjL * Server-side sw stack - Play/Scala, AKKA, Graph-Database(JanusGraph), PostgreSQL, Elasticsearch * Client-side sw stack - Typescript, Angular framework(2.0/4.0)

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Full-stack mobile/web app service developer * http://newnalchat.com - developed all server-side scalable backend system of instant messaging service (Play/Scala, AKKA, GraphDatabase(Titan), Cassandra, Elasticsearch, AWS) (http://newnalchat.com) - developed initial version of iOS Newnal Chat mobile app * http://someoneapp.net - developed all server-side backend system of photo messaging service * http://clipchannel.net - developed all server-side backend system of GIF/Video meme sharing service - developed web-app client of clipchannel.net (Angular Framework)

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다음지도앱(iOS, Android) 개발, 다음앱 개발, Kardin 모바일 명함 서비스 사내벤처

Jeus Java EE WAS 개발

U-City 솔루션 개발