Bùi Hoàng Ý

0xWhyZi

Fullstack TypeScript engineer for DeFi systems. Skin in the game since 2021. Shipped wallet admin platforms and live trading bots across EVM, Solana, and perpetual venues.

Email me @0xWhyZi Telegram

Selected work

Systems I ship and run

Engineering and ops first. Metrics are stated as-is, including strategies still iterating.

01 · May 2025 - Present · ~8 months live

Perpetual trading systems

Independent · NestJS

Volume: ~$2M
PnL: $300+
Incentive points: 350
Runtime: 8 mo

Live execution across Extended, RiseX, and Arcus with entry/exit logic, risk controls, and PnL tracking.
Focused on operational reliability: continuous runtime, venue selection, and position hygiene under live market conditions.

NestJSTypeScriptExtendedRiseXArcus

02 · May 2024 - May 2025

Abstract-native wallet (Privy-like)

Fullstack · Core team

Built admin dashboard and operator flows for a chain-native wallet comparable to Privy-style embedded auth.
Owned API key setup, authentication surfaces, and user whitelist / blacklist administration.

TypeScriptAdmin dashboardAuth

03 · 2025 - Present

Delta-neutral LP + perp hedge bot

Independent · NestJS + Solidity

Live · not yet profitable

Automates Uniswap V3-style LP on HyperEVM with a short hedge sized to LP HYPE exposure on Extended.
Rebalances on delta drift and out-of-range events to keep the book closer to market-neutral.
In production and still iterating. Strategy not yet profitable.

NestJSSolidityHyperEVM LPExtended

Strategy write-up →

04 · 2025 - Present

Meme coin trading · EVM + Solana

Independent · NestJS

Live · not yet profitable

Data → execution pipeline: GMGN market data, ox for EVM swaps, Jupiter Aggregator for Solana.
Live systems with strategy still iterating. Not yet profitable.

NestJSGMGNoxJupiter

Writing / research

Public takes on perp stacks and L1 ecosystems

Open on X

LighterEVM composability wishlist

Personal take on LighterEVM as a ZK L2: lending liquidations into the orderbook, stakeLIT / LLP flows, and a full perp + DeFi stack.

Open on X

Hyperliquid ecosystem farming guide

Step-by-step HyperCore / HyperEVM flow across Unit, stakedHYPE, lending, and DEX liquidity venues.

Experience

Path into DeFi engineering

FPT University Da Nang, Software Engineering (2020-2024), Excellent graduate. Domain depth from community and BD roles, then product engineering on an L1-native wallet, then independent trading systems.

May 2025 - Present
Independent DeFi engineer
Personal systems
Designing and operating trading bots for perps, delta-neutral LP hedges, and cross-chain meme execution.
May 2024 - May 2025
Fullstack developer
Confidential Layer-1 · wallet core team
Admin dashboard, API key provisioning, auth, and whitelist/blacklist flows for an Abstract-native wallet.
Early 2024 - May 2024
Researcher
Confidential Layer-1
Protocol and market research supporting BD and product decisions.
2023 - 2024
Business development
Confidential Layer-1
Partnership and ecosystem BD for a Layer-1 blockchain company.
2021 - 2022
Community manager
GameFi & Layer-1 projects
Community operations across early GameFi and L1 launches. Built the foundation for DeFi domain fluency.

Stack

TypeScript-first DeFi tooling

Languages

TypeScript
Solidity
Java
Rust

Integrate

NestJS
Next.js
ox (EVM)
Jupiter Aggregator
GMGN SDK

DeFi experience

DEX
Lending
PerpDEX
LP hedging

Contact

Open to DeFi engineering roles

Prefer teams shipping DEX, lending, perps, or wallet infrastructure. Reach 0xWhyZi directly.

Hoangy761exe@gmail.com @0xWhyZi @Whyziiiiiiiii Traditional CV