Full-Stack Engineer · Yogyakarta, Indonesia · Open to remote
I work at the intersection of AI agents and on-chain execution: agents that hold a budget, call real tools, sign real transactions, and leave an auditable trail. I ship whole products, usually solo, usually in one to four weeks.
- 🤖 Agent runtimes — MCP servers, tool calling, and LLM decision layers wired to real execution
- ⛓️ On-chain rails — stablecoin payments, smart accounts, x402, ZK settlement
- 🚀 Shipping — 15 products delivered · 8× hackathon winner
- 💬 Ask me about MCP payment flows, idempotent order execution, or agent memory
| Project | What it does |
|---|---|
| AgentPay | MCP-first payment runtime — autonomous agents pay in USDC across X Layer, Celo, and Arc with spend caps and audit trails |
| Notch3 | macOS AI assistant living in the notch — dual-wallet boundary, autonomous x402 settlement, zero-port IPC, Swift 6 |
| Mirai AI | Autonomous X content agent — license-gated, OAuth 2.0 PKCE, MCP tools for Codex, Claude, and Hermes |
| Langclaw AI · Mantle | Wallet-authenticated AI research workspace with on-chain proofs — Best Deployment, Mantle Turing Test 2026 |
| Langclaw AI · Sui | Sui-first AI alpha platform with encrypted verifiable memory on Walrus and Seal |
| Langclaw AI · Celo | Celo-anchored AI strategy workspace with Self proof, MiniPay, and USDT usage billing |
| Elaina AI | AI agents reaching people through WhatsApp instead of a web chat surface |
| IDLE AI | AI-powered token launchpad — agent infrastructure plus a Solidity token factory and swaps |
| Exoduze | AI-agent prediction market — Next.js, Fastify, and Solana/Anchor in one monorepo |
| DARX | Crypto dark pool — encrypted orders, off-chain matching, Groth16 proof settlement on Arbitrum |
| wearelazydev | Bounty platform where merged pull requests are proven with zkTLS — 1st place, Mammothon 2025 |
| Freex | Rupiah-stablecoin payment gateway — non-custodial settlement split inside the same transaction |
| GrowFi | Solana farming GameFi — Phaser 3 gameplay, marketplace, direct trades, on-chain economy |
| VeritasDAO | Web3 community crowdfunding with wallet-connected campaigns |
| Bekaspakai | Second-hand marketplace built and launched solo — 1st place, Startup Hackathon ASTRO 6.0 |
6 shipped products · 50 architecture decision records · 1 verification script
Six of these products carry their own architecture documentation — written the way I would want to receive it if I joined the team tomorrow.
Patterns applied and documented
layered architecture · ports and adapters · factory · append-only on-chain registries ·
off-chain compute with on-chain verification · two-phase settlement · non-custodial escrow ·
metered usage accounting · provider abstraction
What is inside each repository
| File | Covers |
|---|---|
01-context → 03-components |
C4 model in Mermaid — system context, containers, components |
04-api-surface |
Endpoints and contracts, specified in OpenAPI |
05-flows |
Runtime sequences for the paths that matter |
06-data-model |
Tables and on-chain state — which layer owns which fact |
07-security-model |
Trust boundaries, custody, authority, failure modes |
08-deployment |
Environments, networks, release path |
09-future-work |
What is knowingly unfinished, and why |
adr/0001… |
Decision records: context, decision, consequences |
tools/verify-docs.sh |
Checks every documented claim against the source |
The six
| Product | Decisions documented |
|---|---|
| FreexCrypto (10) | Rupiah-stablecoin settlement asset · on-chain fee split · non-custodial checkout · layered backend · three-repository split |
| IDLE AI (10) | Token-per-agent factory · fixed supply · on-chain agent metadata · wallet layer · API routes as the agent bridge |
| Langclaw Celo (10) | Anchoring decisions on-chain · append-only registries · metered usage vault · Ownable2Step withdrawal authority · planner over eleven providers |
| DARX (7) | Encrypted off-chain FIFO matching · backend proving with on-chain verification · client-signed settlement |
| wearelazydev (10) | zkTLS proof of a merged PR · on-chain bounty escrow · dedicated proof service · two-phase claim settlement |
| Elaina AI (3) | Agent runtime and messaging integration · C4, Mermaid, and OpenAPI as the documentation contract |
- 🥇 Best Deployment Project — Mantle Turing Test Hackathon 2026 · Langclaw AI Mantle
- 🥇 1st Place — Mammothon 2025 by Encode Club × Celestia Foundation · wearelazydev
- 🥇 1st Place — Startup Hackathon ASTRO 6.0 2024 · Bekaspakai
- 🥈 2nd Place — MetaMask Card Hackathon · Freex
- 🥈 2nd Place — Indonesia Hacker House Web3 Hackathon 2025 by Manta Network · IDLE AI
- 🥉 3rd Place, Best Rating Team — Informatics Expo 2023
Also placed Top 10 in the Lisk Builder Challenge Round 1 and Top 58 teams at HackFest 2023 by Google Developers.
AI OpenAI · Vercel AI SDK · LangChain · MCP · RAG · tool calling
Web3 Solidity · Foundry · Wagmi · Viem · Solana/Anchor · Sui Move · x402 · ZK
Frontend Next.js · React · TypeScript · Tailwind · Shadcn UI
Backend Node.js · Python async · Supabase · Prisma · PostgreSQL · Redis