Available for opportunities

Statdapa Developer

Statistics Student building at the intersection of AI & Web3 — from LangChain agents to Solidity smart contracts. Based in Semarang, Indonesia.

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8+ Live Projects
2 Domains
Learning

Tech Stack

Tools I build with

Python
PRIMARY LANGUAGE
LangChain
AI FRAMEWORK
Pandas / NumPy
DATA PROCESSING
Scikit-learn
MACHINE LEARNING
JavaScript
FRONTEND + WEB3
React + Vite
FRONTEND
Ethers.js
WEB3 LIBRARY
Solidity
SMART CONTRACTS
Hardhat
EVM TOOLCHAIN
Chainlink VRF
RANDOMNESS ORACLE
SQLite
DATA PERSISTENCE
SPSS / EViews
STATISTICAL TOOLS

Work

Featured Projects

PROJECT_02 / WEB3 · DEFI
StakeVault
DeFi Staking Protocol · Sepolia Testnet

ERC-20 staking protocol using Synthetix-style reward mechanism. Users stake tokens and earn yield automatically calculated per second. Full React frontend with live APY estimation.

DEFISolidityHardhatReactEthers.jsOpenZeppelin
PROJECT_03 / WEB3 · NFT
NFT Collection
ERC-721 · IPFS · Minting dApp

100-piece NFT collection with metadata stored on IPFS via Pinata. Full minting website with MetaMask integration, per-wallet mint limits, and owner controls.

NFTERC-721IPFSPinataReact
PROJECT_04 / WEB3 · TOKEN
ERC-20 Token
Custom Token · Buy · Transfer · Burn

Full-stack ERC-20 token with buy, transfer, and burn functionality. React dApp with live blockchain data, MetaMask wallet connection, and auto network switching.

ERC-20SolidityOpenZeppelinReactEthers.js
PROJECT_05 / WEB3 · DEFI
Mini DEX — AMM
Automated Market Maker · Uniswap-style x·y=k

Decentralized exchange built on constant product formula. Supports token swaps and liquidity provisioning with on-chain price discovery. Full React frontend.

DEXAMMSolidityReactEthers.js
PROJECT_06 / WEB3 · GOVERNANCE
DAO + Voting System
On-Chain Governance · Timelock Controller

Fully on-chain DAO with proposal creation, token-weighted voting, quorum enforcement, and timelock execution. Built with OpenZeppelin Governor contracts.

DAOGOVERNANCESolidityOpenZeppelinReact
PROJECT_07 / WEB3 · CHAINLINK
Decentralized Lottery
Chainlink VRF · Provably Fair Randomness

Provably-fair lottery smart contract using Chainlink VRF for verifiable on-chain randomness. Subscription-based VRF fulfillment with automated winner selection.

CHAINLINK VRFSolidityHardhatRandomness
PROJECT_08 / AI + WEB3
AI + Web3 On-Chain Agent
LangChain · Web3.py · On-Chain Analytics

Extended AI agent that reads and interprets live on-chain data — wallet balances, transaction history, and DeFi contract state — via natural language queries. Bridges AI reasoning with blockchain analytics.

AI + WEB3LangChainWeb3.pyPythonDeFi Analytics

Timeline

Learning Journey

2026
Completed
2024 — 2025
Python, Statistics & Data Science
Pandas, NumPy, Matplotlib, Seaborn, Scikit-learn, SPSS, EViews, Minitab
Completed
Early 2025
AI Agent Development
Built Crypto AI Trading Agent using LangChain with RSI signals, Fear & Greed Index, news aggregation, and Telegram Bot delivery. Submitted to OKX competition.
Completed
Mid 2025 — Early 2026
Web3 & Smart Contract Development
ERC-20 Token → NFT Collection → DeFi Staking → Mini DEX → DAO + Voting → Decentralized Lottery. All deployed on Sepolia Testnet.
Completed
Early 2026
AI + Web3 On-Chain Agent
Merged AI reasoning with live on-chain data — wallet queries, DeFi analytics, and transaction history via natural language.
In Progress
2026 — Now
JavaScript & Solidity Deep Dive
Deepening understanding of JavaScript fundamentals and advanced Solidity patterns — security, gas optimization, and protocol architecture.
Next
2026 — Upcoming
Smart Contract Security & Mainnet
Security patterns, vulnerability detection, audit methodology, and eventual mainnet deployment.

Contact

Let's Build
Together

Open to collaboration, internships, and junior roles in AI, Web3, or Data Science.