- Designed and supervised the development of Klip(crypto wallet), KlipDrops (NFT marketplace), and NFT rental service, both on the smart-contract and FE sides- Designed and implemented various smart contracts below + Aggregator of swap and bridge services including 1inch and SwapScanner + STO related smart contracts (STO market, stable token, and minting tool) + Auction smart contract for NFTs, supporting bidding with KLAY or ETH + NFT marketplace contract including digital arts and PFP(Profile Picture) + Proxy pattern based NFT minting system + Multi-sig based Klaytn Governance Council control and staking system + Hash key based crypto(ERC-20, ERC-721, ERC-1155) escrow service- Audited DApp services and tokens which were candidates for Klip listing- Developed the backend of Klip and Klaytn API service using GoLang, with a specific focus on the communication between the backend and smart contracts- Led the DApp service and frontend teams- Managed outsourcing of minor tool development and oversaw outsourced QA processes

- Designed and implemented HSM(Hardware Security Module) solution to sign transactions with BIP32 solution- Development of multi-sig solutions on Ethereum by implementing smart contracts- Developed and deployed ERC20 tokens related with Bithumb- Audited ERC20 and ERC721 tokens which were candidates for Bithumb listing- Development of multi-sig solutions on EOS, STEEM, and Litecoin- Researched up to date blockchain solutions- Specialist at Ethereum and ERC20 Tokens- Researched and solved all the Ethereum related issues at Bithumb- Specialist at EOS, Steem, and Bitcoin- Developed Ethereum smart-contracts based DApps

- Designed and developed up to date secure loader of Humax- Designed and developed security module (CAS & DRM) of OCTO2.0 – middle ware of Humax- Proceeded certification of STBs; middle-ware for Conax and Verimatrix, and secure loader for Irdeto- Managed the end to end certification process of CI+- Deployed to local offices in Germany, Turkey and UK to work on localization of products- Collaborated with CAS vendors and broadcast operators in order to implement their requirements on STBs- Implemented the web application based on Opera browser on STB- Set up the automatic test system on security modules- Supported the Linux hardening process of STBs for Conax and Irdeto- Implemented the newest functions required from retail market such as Sat-IP and multi-screen

- Developed an algorithm to segment continuous human motions into a combination of primitive gestures even a seamless gesture- Classified unknown objects according to the grasping types by using Eigenshape approach- Implemented 3D object reconstruction including segmentation and tracking of the target object from stereo vision- Researched cooperative grasping planning by combining two humanoid robots with different functionalities- Designed a robotic grasp planning for unknown object by using a data-glove- Integrated a grasp planning by human demonstration into a network-based humanoid robot