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李彥寬

Innovative tech mind with 7 years of experience working as a backend engineer. Capable of working with blockchain, big data, distributed computing, decentralized storage, and managing databases. I am proficient in Golang, Ethereum, IPFS, and familiar with Linux and Docker container.

Blockchain and Big Data
Taipei,TW
[email protected]

Work Experience

BSOS, Senior Backend Engineer, Aug 2019 ~ now

  • Tech Lead & Core Developer
  • Blockchain Research
  • Developed BridgeX, a tool of enterprise blockchain to improve the safety, ease of maintenance and scalability of the system.
    • Key Management
    • Decentralized Identity
    • Data Ownership
    • Asset Liquidity
  • Developed SUPLEX, an innovative supply chain FinTech SaaS targeted to introduce digital transformation as well as cash flow optimization for corporates.
  • Projects
    • Fubon using BridgeX
    • NCHC Hyperledger Avalon
    • NLIA DID

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IDHub, Blockchain Engineer, Mar 2019 ~ Jul 2019

  • Implement SSI (Self Sovereign Identity) with blockchain solutions.
  • Developed DID (Decentralized Identity) with smart contract.
  • Building digital identity applications on Ethereum blockchain, such as:
  1. ERC-725 DID method
  2. KYC / AML of DID
  3. Decentralized exchange of security token: KYC with 0x protocol

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Institute for Information Industry, Software Engineer, Nov 2015 ~ Feb 2019

  • Big Data analysis with Hadoop Map-Reduce.
  • Developed iServStor, a decentralized storage platform implement with IPFS.
  • Developed iServDB, a hybrid database solution, which the core system is combined with PostgreSQL, mongoDB, and influxDB.
  • Implement a high speed booking system with VoltDB.
  • Developed IPDC, a peer-to-peer hypermedia protocol to make the computation faster, open, and more scalable.
  • Building decentralized applications on Ethereum blockchain, using solidity and web3.py.

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Yahoo!, Project Intern, Jul 2014 ~ Jul 2015

  • Intern at Yahoo! Search team
  • User query log analysis with Hadoop Map-Reduce and Pig
  • Knowledge graph optimization by machine learning algorithm

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Flysheet, Summer Intern, Jul 2011 ~ Aug 2011

  • Research on RDF semantic web
  • Research on SparQL query language

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Education

National Cheng Kung University, Master’s Degree, Computer Science and Information Engineering, 2013 ~ 2015

Advanced Network Database Lab

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National Cheng Kung University, Bachelor’s Degree, Computer Science and Information Engineering, 2009 ~ 2013


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Skills


Blockchain Dev

  • Enterprise Ethereum
    • Quorum
    • Hyperledger Besu
  • Hyperledger Avalon
  • go-ethereum
  • IPFS
  • Hashicorp Vault
  • Solidity
  • OpenZeppelin
  • Truffle
  • DID
  • DeFi


Blockchain research

  • Hyperledger Fabric
  • R3 Corda
  • IOTA
  • Centrifuge
  • Substrate
  • Solana
  • Chainlink
  • MakerDAO
  • Swarm
  • Whisper
  • 0x protocol


Backend

  • Go
  • API
  • Keycloak
  • Linux
  • Database
  • Micro-service
  • Docker
  • Git

Database

  • ORM
  • MySQL
  • PostgreSQL
  • MongoDB
  • VoltDB
  • influxDB
  • Neo4J
  • FDW



Big Data

  • Data Mining
  • Text Mining
  • Machine Learning
  • Hadoop Map-Reduce
  • Pig Hive
  • Mahout


Analysis

  • Algorithms
  • Graph API
  • Crawler
  • DBpedia and SPARQL
  • Knowledge graph


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