## Don Park

  * don.park@gmail.com
  * Portland Oregon USA
  * https://github.com/donpdonp

### Mission

To build blockchain systems that are secure, effective, and predictable.

### Skills

  * Studying and participating in blockchains since 2010
  * Effective in multiple programming languages and environments (Go/Node.js/Rust/Python/Linux)
  * 15 years of software development, documented in github; Linux tools; Cloud platforms
  * Quick to pick up new technologies; Good communicator and organizer

### Work History

  * IceCondor.com / Javascript Architect (2008-present) [Sole Proprietorship]
    * Ingests streaming data from mobile clients
    * Android client, published in Play store
    * Node.js API backend
    * JSON over Websocket communications (multi-threaded)
    * Protobuf on-disk format for space efficiency
    * https://github.com/icecondor/api-rs
  * Yith / Rust Developer (2020 Jan - 2020 May)
    * Trade execution engine (receives orders from Nimbook (see below))
    * Smart Contract calls to 4 distributed exchanges (Ddex, IDEX, Switcheo, RadarRelay/0x)
    * Ethereum transaction building, encoding, signing and submitting
    * Profit/Risk monitoring and validation before submitting any transactions
    * Compute arbitrage price differences, track with influxdb/grafana
    * Built to quickly incorporate new exchange datafeeds
    * https://github.com/cointhink/yith
  * BlkMev / Blockchain Developer (2019 Apr - 2019 May) [project]
    * Bitcoin wire-protocol implementation in perl6/raku
    * Demonstrates a deep understanding of the blockchain and transactions
    * https://modules.perl6.org/dist/BlkMeV
  * Cointhink / Full Stack Developer (2013-2015) [Sole Proprietorship]
    * Arbitrage tracking on early bitcoin exchanges
    * Ruby on Rails, postgresql, Elm, Javascript
    * https://web.archive.org/web/20160219100013/http://cointhink.com/arbitrage/btc:usd
  * Vault / Lead Javascript Developer (2016-2017)
    * 10-person finance startup in Portland Oregon
    * Achieved API compliance with APEX Clearinghouse for NASDAQ access
    * Wrote Node.js implementation of portfolio balancing with stock trades on NYSE/NASDAQ
  * Chroma Fund / Lead Javascript Developer (2015)
    * Early Bitcoin crowdfunding platform
    * Bitcoin colored-coin/non-fungible implementation from specs in Node.js
  * Coindust / Lead Javascript Developer (2015-2016)
    * Command line bitcoin wallet in node.js, using bitcoinjs library.
    * Builds bitcoin binary transactions, calculates fees
    * Published in NPM, still used today
    * https://www.npmjs.com/package/coindust
  * Gluon / Lead Go Developer (2014-present) [project]
    * Go-Lang pub/sub json based async irc bot framework
    * Manages multiple javascript interpreter instances

### Education
  * University of Portland
    * Bachelors of Science in Computer Science
  * Portland State Univ.
    * Graduate Dept in Computer Science (unfinished masters degree; all but Thesis)

https://donp.org/resume.pdf