Full-Stack Web Engineer & Smart Contract Developer
🥯 Founder & CEO of Bagel Finance
🏆 Multi-time Global Hackathon Winner
🇯🇵 Since 2017 in Crypto | from Japan
- Full-stack Web Development
- Production-ready frontend & backend
- Cloud infrastructure, CI/CD, and database design
- Blockchain / DeFi Engineering
- Multi-chain smart contract development (EVM / TON / SUI / Bitcoin)
- DeFi protocol design, vault development, and crypto payment automation
- Shipping-focused Founder
- Multi-time hackathon winner with live products and real users
| Title | Host | Language | Link |
|---|---|---|---|
| Founder Livechat #3: Bagel Finance | TON SSEA Hub | English | 📺 Watch |
| What is Bagel Finance, which won 1st place at TON Bootcamp? | web3Research | Japanese | 📺 Watch |
- Core Framework
- Next.js (App Router) • TypeScript • React Server Components
- Styling
- Tailwind CSS • Chakra UI
- Mini Apps Development
- Telegram: WebApp SDK integration • Browser-based local mock system
- Base: OnchainKit integration • Base mini app SDK
- Wallet Integrations
- TON Connect • EVM wallets (MetaMask, WalletConnect)
- API Architecture
- Next.js API Routes (BFF) • Prisma ORM • MySQL • REST API design
- External Integrations
- Telegram Bot API (messages, payments, stars) • CoinGecko API (pricing & historical data)
Production-grade AWS architecture
- Core Infrastructure
- EC2 (multi-instance, auto scaling) • Application Load Balancer • RDS (MySQL)
- Services
- Lambda (scheduled jobs) • EventBridge (cron) • S3 (assets, metadata) • Route53 (domains)
- CI/CD
- GitHub Actions • Branch-based deployment (
dev→ staging,main→ production) • Zero-downtime deploy
- GitHub Actions • Branch-based deployment (
- EVM (Solidity)
- TON (FunC)
- SUI (Move)
- Bitcoin (Bitcoin Script)
- Smart Contract Development
- Solidity • Foundry & Hardhat development frameworks
- PayFi & DeFi Automation
- Multi-wallet distribution • Multi-strategy allocation • AAVE, Morpho Vault, Uniswap V2 integrations
- Gelato automation integrations
- Cross-Chain Extensions
- Cross-chain bridge via Nexus Widgets
- 1inch Fusion+ extensions to TON Blockchain
- Hash Time-Locked Contracts (HTLC) for cross-chain atomic swaps
- Front-running resistance via commit-reveal
- FunC Smart Contracts
- Two-layer vault architecture • Index token minting & redemption
- Hash time-locked contracts with secret verification
- Jetton Development
- Multi-jetton basket reception • Off-chain monitoring with TON API
- Infrastructure
- TON payload & gas optimization • Omniston /DeDust / STON.fi integrations • Blueprint build/test/deploy
- Move Smart Contracts
- On-chain vaults with atomic rebalance • Multi-reserve lending strategies • Share-token accounting
- Deployment
- Verified mainnet deployments
- Bitcoin Script Implementation
- Legacy transactions (P2PKH, P2SH, multisig) • Segwit v0 (P2WPKH, P2WSH)
- Taproot (P2TR, Schnorr signatures, TapTrees) • Signature hash evolution & flags
- Transaction & script-level timelocks
- Development Tools
- UTXO management & raw transaction building • Bitcoin Core integration (TestShell, regtest)
| Project | Achievement | Description | Links |
|---|---|---|---|
| Bagel Finance | 🥇 1st Place @ TON Bootcamp Bangkok | DeFi for index-style portfolio investing on TON | App • Details |
| Opensource Orchestra | 🥇 1st Place, ENS Track @ ETHGlobal 2025 New Delhi | Giving-economy platform connecting Ethereum musicians and communities | App • Demo • GitHub |
| Zen Scan | 🥉 3rd Place @ TON x AWS Hackathon | Mindful Blockchain Security on TON | GitHub |
| PHR Onchain | 🥉 3rd Place @ Tokyo Bowl Hackathon | Bring Personal Health Record on-chain | Demo • GitHub |
| Ghost Yield | 🚀 @ETHGlobal HackMoney 2026 | Tokenize idle L2 compute, price via Uniswap v4, arbitrage via Yellow, settle in USDC. | Demo • GitHub |
| TonFusion | 🚀 @ETHGlobal 2025 Unite DeFi | Extending 1inch Fusion+ cross-chain swaps to TON Blockchain | Demo • GitHub |
| Toke Of App | 🚀 @ETHOnline 2025 | PayFi Payroll & Gifting with Multi-Wallet Distribution and Automation | Demo • GitHub |
| MagoHODL | 🚀 @Base Japan Ogiri Hackathon | dApp that locks crypto and passes to future generations | GitHub |
| Bonsai to Earn | 🚀 @Base Japan Vibe Coding Mini Hackathon | Bonsai to Earn — a Base/Farcaster mini app | GitHub |
Always open for collaboration and open-source innovation.
Follow & contact me on X (Twitter)