Hoang Phi Long

Hoang Phi Long (block #0)

Blockchain & AI R&D Engineer · Hanoi

• Building DeFi infrastructure, wallets, and AI agents.
• $10M AUM at Krystal · contracts live on 10 EVM chains · ETH Vietnam 2024 winner · 2× IEEE-published.

DeFi · AI · Rust · TypeScript · Solidity

• GitHub
• LinkedIn

HUST (2018 – 2023)

Hanoi University of Science and Technology — Electronics & Telecommunications

• B.Eng, School of Electronics and Telecommunications, Oct 2018 – Mar 2023 — GPA 3.18/4.0.
• Focus on signal processing & machine learning; two IEEE publications on Vietnamese emotion recognition with PhoBERT (NICS 2022, ATiGB 2023).

Electronics · Telecom · PhoBERT · Research

• NICS 2022 paper
• ATiGB 2023 paper

First Blocks (2021 – 2022)

Fagolabs · DevZone Lab — Software Engineer

• DevZone Lab (2021 – 2022, freelance, hybrid, 9 months): built the Lasy fashion-shop website (Next.js, Express.js, MySQL, AWS) and a pharmacy-shop frontend (React); mentored a firmware contest at the university.
• Fagolabs (2021, part-time, on-site, 6 months): built portals for network and security devices, an SEO landing page (Nuxt.js + Strapi CMS) and a product showcase page (WordPress); deployed them on a self-hosted server.

Nuxt · Next.js · WordPress · AWS · MySQL

Airdata Technology (2023 – 2025)

Software Engineer — aviation systems

• Software Engineer, part-time, remote — 1 year 8 months.
• Implemented flight-management, accounting and automated-execution cronjob APIs.
• Integrated third-party airline and distributor APIs — Vietnam Airlines, Amadeus, Sabre, Jetstar, Scoot, AirAsia and more; coordinated directly with partner teams.
• Built a retail website in Vue.js.

Aviation · APIs · VueJS · Integrations

Krystal — Kyber Group (2022 – now)

R&D Software Engineer — DeFi at scale

• R&D Software Engineer, full-time, hybrid, Hanoi — 2022 to present.
• DeFi platform: build the Krystal DApp (EVM-focused: exchange, liquidity management, provisioning and automation) with React + Chakra UI, Go and GCP — the platform manages $10M AUM.
• Revenue: integrated third-party services that bring revenue to the platform.
• Smart contracts — Krystal Vault: build an asset-management vault that interacts with LP, staking and other strategies, live on 7 EVM chains and holding $700k TVL (Solidity, Hardhat, Foundry).
• Smart contracts — V4Utils: build contracts that make Uniswap V4 liquidity positions easy to manage, live on 10 EVM chains (Solidity, Foundry).
• Smart contracts — Subscription with NFT: build the contract that manages user subscriptions by issuing NFTs, on 2 EVM chains (Solidity, Hardhat).
• Wallet: Krystal Wallet Extension, a MetaMask / Trust Wallet-class cryptocurrency wallet (React, Chrome Manifest V2).
• AI: Krystal Agentic System on the ElizaOS framework.
• Launchpads: Krystal ILO (Initial Liquidity Offering) and liquid.fun (meme launchpad with liquidity-pool mechanisms) in Next.js + Chakra UI; maintain the Krystal Launchpad IDO platform.
• Infrastructure & cost: reduced GCP infrastructure costs by 15% through service and ingress compression and tiered storage for Bigtable.
• Growth & SEO: build Krystal's landing page (Next.js + Chakra UI) with SEO optimization scoring 100/100 in best practices, SEO and accessibility and 88/100 performance.
• Automation: build bots that interact with the blockchain in Node.js, Python and Go.

Solidity · Foundry · React · Go · GCP · ElizaOS

• Krystal

Mining the Future (next block)

Open to hard problems in DeFi × AI

• Shipping DeFi infra with $10M AUM on 10 EVM chains at Krystal — and looking for what's next.
• This block is still empty. Let's mine it together.

AI Agents · DeFi · Open to work

• Email me
• Résumé
• GitHub
• LinkedIn

DeFi Galaxy

• Krystal Vault — Asset vault running LP/staking strategies on 7 EVM chains — $700k TVL. (Solidity · Foundry) Krystal Vault link
• V4Utils — Uniswap v4 liquidity position tooling on 10 EVM chains (V3 sibling is public). (Solidity · Uniswap v4) V4Utils link
• NFT Subscription — Subscriptions issued as NFTs on 2 EVM chains. (Solidity · Hardhat)
• liquid.fun — Meme launchpad with liquidity mechanisms. (Next.js)
• Krystal ILO — Initial Liquidity Offering platform. (Next.js)
• Krystal Launchpad — IDO platform, maintained and extended. (Next.js)
• L2 Flash Loan Aggregator — Cross-L2 flash loan routing. (Foundry · Rust · React)

AI Galaxy

• Krystal Agentic System — Autonomous DeFi agents on ElizaOS. (ElizaOS · TypeScript)
• Support Chatbot AaaS — RAG customer-support bots as a service. (Next.js · tRPC · PostgreSQL)
• Smale — Gamified learning app with AI-generated roadmaps. (Flutter · Go)

Bot Swarm

• Prediction-market Arbitrage — Cross-platform arbitrage engine. (Rust)
• DEX Arb Engine — Multi-strategy DeFi arbitrage. (Foundry · Rust)
• Polymarket Copy-trader — Real-time copy trading bot. (Rust)
• Binance Bot — Trading bot with strategy backtesting. (Rust)
• Affiliate Orchestrator — TikTok/YouTube/Facebook automation for VN market. (Node · FastAPI)
• Krystal chain bots — Bots interacting with the blockchain for Krystal. (Node · Python · Go)

Open Source

• Hearable — Real-time on-device captioning & speaker ID for Deaf and hard-of-hearing users. (Rust · Homebrew) Hearable link
• GENESIS — this site — The living-chain portfolio you are flying through right now. (Next.js · R3F · GSAP)

Awards & Publications

• ETH Vietnam 2024 — NFT Wallet — Silver winner (Polygon technical) · Winner (Polygon non-technical) · #1 on DoraHacks. ERC-6551 NFT-linked smart wallet extension. (ERC-6551 · Award) ETH Vietnam 2024 — NFT Wallet link
  • Mar 2024 — Silver Winner of Polygon Technical · Winner of Polygon Non-technical · Top 1 of DoraHacks.
  • Browser extension for NFT-linked smart contract wallets using ERC-6551: the owner of the NFT controls the wallet, so transferring a wallet is as easy as transferring an NFT — create smart contract wallets, connect to dApps and transact just like on MetaMask or Rabby.
  • Create a smart account (NFT-linked smart contract wallet) from an EOA wallet; connect smart accounts to dApps and interact with their smart contracts; transfer the smart account to another address via NFT transfer.
• IEEE × 2 — PhoBERT Emotion Recognition — NICS 2022 & ATiGB 2023 publications on Vietnamese emotion recognition. (NLP · IEEE) IEEE × 2 — PhoBERT Emotion Recognition link