Smart Contract & SDK Engineer | Fullstack Developer Intern @ Baliola | Building cross-chain dApps
Web3 · Smart Contracts · Somnia · Cloak|Frontiers· Baliola · BCC UKDW
"I build the hard, invisible layers of Web3: the smart contracts, SDKs, and backends that make decentralized apps something people can actually trust and use."
Top 1 of Top 10 — Somnia Reactivity Hackathon
Business case: Crypto is lost forever when an owner passes away — there's no trustless way to pass it on without handing over your keys. SomMemo lets you name a beneficiary and deposit assets; if you stop "checking in" before a deadline, the assets transfer automatically. A digital will, fully on-chain. Technical edge: Keeper-free automation using Somnia's Reactivity scheduling precompile (no Chainlink/Gelato dependency), reentrancy-hardened with the CEI pattern, written in Solidity and tested with Hardhat. Links: Repo
5th Place — Frontiers Hackathon 2026 (Track Cloak)
Business case: Whitehat hackers usually have to reveal their wallet to claim a bounty, exposing their identity and earnings. Tirai severs the on-chain link between a project's deposit and a researcher's withdrawal, so they get paid anonymously. Technical edge: I built the backend & SDK layer — wrapping Cloak's zero-knowledge Shield Pool into a safe API and a wallet-only auth-server (EIP-191 signatures + JWT) on Solana. Links: Repo
Built at PL_Genesis: Frontiers of Collaboration Hackathon (Flow track)
Business case: Payroll is batched monthly — employees wait weeks for money they've already earned, and cross-border transfers are slow and expensive. MonzuPay streams salary per second, lets employees claim anytime, and puts idle funds to work earning yield. Technical edge: I built the Cadence smart contracts on Flow — per-second salary streaming, autonomous scheduled payroll via FlowTransactionScheduler (no external keepers), and DeFi yield routing through IncrementFi. Links: Repo · Live Demo
Built at the MetaMask Smart Accounts Kit × 1Shot API × Venice AI Dev Cook-Off
Business case: Autonomous DeFi bots usually demand blanket token approvals — one compromise drains the whole wallet. Redelegator grants a single scoped permission that's redelegated down a chain of AI agents, each with cryptographically enforced, ever-narrowing spending caps. Technical edge: I built the delegation backend & SDK on MetaMask Smart Accounts (ERC-7715/7710, EIP-7702) — narrowing redelegation, gasless redemption via a 1Shot relayer, and a one-call kill-switch, all zero-custody. Tested end-to-end on Base mainnet. Links: Repo
- Blockchain: Solidity (Foundry, Hardhat), Cadence (Flow), account abstraction (ERC-7715/7710, EIP-7702), smart-contract security (CEI, OpenZeppelin)
- Backend: Node.js, TypeScript, REST & WebSocket APIs, Hono, Supabase
- Frontend: Next.js, React, TypeScript, Tailwind CSS
- Chains: Ethereum/EVM, Solana, Somnia, Base, Initia, Flow
- Expertise: Smart-contract development, SDK integration, zero-knowledge privacy integration, autonomous agents & DeFi
Selected recognition: 🥇 Top 1 of Top 10, Somnia Reactivity Hackathon (SomMemo) · 🏅 5th place, Frontiers Hackathon 2026, Track Cloak (Tirai).
🧑💼 BEM FTI UKDW — Coordinator of Human Resource Development (PSDM), across two terms(2025/2026 & 2026/2027)
🎓 UKDW Blockchain Community Club (BCC) — Event Organizer. A student-led Web3 club that learns, builds, and ships onchain.
📋 FTI PLUS — Steering Committee (2025 & 2026).
💼 LinkedIn: Alven Tendrawan
📷 Instagram: @alventendrawan
📧 Email: alvenalven367@gmail.com
"Making Web3 invisible — so the technology fades into the background and the experience is all that's left."