Blockchain Engineer

Boron

ZK privacy systems on EVM · trustless apps on UTXO

Email GitHub LinkedIn

About

Blockchain engineer with 4+ years shipping production dApps with real users and transactions. On EVM I build privacy-preserving systems - Noir ZK circuits and signer-private multisig. On UTXO chains (eCash) I build trustless, non-custodial apps. I like owning a feature end-to-end: circuit, contract, client, and deploy.

Ho Chi Minh City, Vietnam

Selected Work

01PolyPay

Fullstack Blockchain Developer

Privacy-preserving payroll on Horizen (EVM), built end-to-end.

  • Signer-private multisig - Noir ZK circuits keep signer identities and payment details off-chain
  • 100+ users and 1,000+ transactions; adopted by the Horizen core team
  • Solidity contracts, batch payments, and a payments dashboard; CI/CD via Docker + GitHub Actions on GCP
Docs
02Local eCash

Fullstack Developer

P2P crypto-trading marketplace as a Telegram Mini App.

  • Trustless on-chain escrow via an eCash P2SH covenant - no third party holds funds
  • Next.js + NestJS code-first GraphQL; real-time order status over Socket.IO
  • Playwright E2E across buyer / seller / arbitrator flows against real on-chain transactions
03Lixi Social

Fullstack Developer

Blockchain social network with a token-burn ranked feed.

  • Ranked timeline ordered by a token-burn relevance score with time decay
  • Redis caching layer cut API response times by ~20%
  • Multi-chain support (Lotus/XPI, eCash/XEC, Ergon/XRG) with per-chain indexers

Earlier

  • Sendlotus React crypto wallet UI for Lotus (XPI)
  • ABCPay Multi-platform payment app UI (web, Android, iOS)

Skills

Blockchain & ZK

EVM ChainsEthereumArbitrumHorizeneCash (UTXO)NoirZK ProofszkVerify

Smart Contracts

SolidityRust (Arbitrum Stylus)eCash ScriptFoundryHardhatSlither

Frontend

TypeScriptReactNext.jsWagmiViemEthers.jsRainbowKit

Backend & Data

Node.jsNestJSGraphQLSocket.IOPrismaPostgreSQLRedis

Tooling

DockerCI/CDGitHub ActionsGCPPlaywrightLinux

Contact

Open to blockchain and ZK roles, and interesting collaborations. Reach out.

huygon764@gmail.comGitHub LinkedIn