Rakib M. Hossain — Backend & Web3 Developer

Web3 Backend Developer & Architect Building scalable APIs, blockchain systems, and smart contract integrations with Python and Node.js.

PythonNode.jsFastAPISolidityWeb3PostgreSQLRedisDockerTypeScriptReact

Selected Projects

Certificate in Web3 View →

A production-grade blockchain certificate management system with FastAPI, Ethereum wallet authentication, Polygon smart contracts for immutable on-chain storage, Storj cloud uploads, and automated email delivery.

PythonFastAPIPolygonSolidityDocker

cTrip View →

A production-style crypto payment gateway with async workers, Redis queues, PostgreSQL storage, blockchain scanners, and webhook delivery, deployed via Docker.

PythonRedisPostgreSQLDockerWeb3

SafeTea Wallet View →

A minimal, gas-efficient multi-signature wallet with on-chain proposal and confirmation workflows for managing ETH and ERC20 assets across multiple owners.

SolidityFoundryReactWagmiEthereum

server.py

from fastmcp import FastMCP

# Uniswap V2 & V3 on-chain MCP server

mcp = FastMCP("uniswap")

@mcp.tool()

async def get_token_price(token_address: str):

"""Get real-time USD price from V3 pools"""

@mcp.tool()

async def execute_swap(token_in, token_out, amount):

...

Uniswap MCP Server View →

A Model Context Protocol (MCP) server that exposes Uniswap V2 and V3 on-chain data and swap execution as tools, resources, and prompts for AI agents.

PythonMCPUniswapWeb3Blockchain

OmniToken View →

A production-grade LayerZero V2 cross-chain token bridge with verified contracts and a modern Web3 frontend.

SolidityLayerZeroReactTypeScript

LocalScan View →

A lightweight EVM blockchain indexer and explorer that runs entirely on your machine. Connect to any EVM-compatible node and start indexing blocks and transactions in real time into a local SQLite database.

PythonFastAPISQLiteweb3.py

Coffee Chain View →

Coffee Chain is a decentralized Ethereum platform where supporters tip creators with ETH and attach messages through transparent, secure smart contracts.

SolidityReactEthereumWagmi

MonoDEX View →

A decentralized exchange enabling trustless token swaps and liquidity management.

SolidityReactUniswap V2TypeScript

Work Experience

Backend & Web3Current

Freelance

2026 – Present

Backend & Web3 Engineer

SomPay

Evolucione

Freelance

Writing

Certificate in Web3 — Blockchain-Verified Certificate Management with FastAPI

How I built a production-grade certificate management system with FastAPI, Ethereum wallet auth, Polygon smart contracts for immutable on-chain hashing, Storj storage, and automated email delivery.

Jan 2025

SafeTea Wallet — Building a Minimal Multisig Wallet in Solidity

How I built SafeTea, a gas-efficient multi-signature wallet with on-chain proposal workflows, owner governance, and a React + Wagmi frontend.

Mar 2026

LocalScan — A Lightweight EVM Blockchain Indexer That Runs on Your Machine

A lightweight EVM blockchain indexer and explorer built with Python + FastAPI, designed for local development with Anvil, Hardhat, and any EVM node.

Fab 2026