Don Park

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

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

• Studying 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

• defihub.markets (May 2023 - Present) [Sole Proprietorship]
  • Defi/Uniswap pool constant-product pricing information
  • Ethereum mainnet chain following for realtime data collection written in rust
• TrustMachines (Bitcoin L2) / Blockchain Engineer (Aug 2022 - March 2023)
  • Contribute to Bitcoin L2 Stacks(STX) node miner software
  • Research and development of a pegged bitcoin equivalent using Schnorr group signatures
  • Deep understanding of bitcoin transaction and address types

    • IceCondor.com / Rust Developer (2022 Feb - 2022 May) [Sole Proprietorship]
      • Ingests streaming data from mobile clients
      • Multi-threaded network daemon, JSON client-server protocol, secure access management
      • Millions of location records with effective indexing
      • 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
      • https://github.com/cointhink/yith
    • Nimbook / Nim Developer (2019 Nov - 2020 Jan)
      • Cryptocoin exchange orderbook continual retrieve/extract/compare
      • Compute arbitrage price differences, track with influxdb/grafana
      • Built to quickly incorporate new exchange datafeeds
      • https://github.com/donpdonp/nimbook
    • 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
    • Bitcoin Script in WebAssembly (2018 Feb - 2018 Apr) [project]
      • Extracted the bitcoin script interpreter code (C++) compiled to WASM
      • Built a web site to evaluate bitcoin scripting language using WASM (not emulated in javascript)
      • https://donpdonp.github.io/bitcoin-wasm/
    • Cointhink version 2 / Full Stack Developer (2017-2018) [Sole Proprietorship]
      • Cryptocoin exchange trading bot hosting/execution
      • Go language API, elm website, and LXD linux containers
      • https://github.com/cointhink
      • https://web.archive.org/web/20171126162006/https://cointhink.com/
    • 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
    • IceCondor.com / Lead Javascript Developer (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

    ### 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