Full-Stack Web3 & dApp Engineer in Brazil
Architect high-security Web3 decentralized applications with Ethers.js, Wagmi, Next.js, and smart contract integrations for startups across São Paulo Tech Hub (Faria Lima).
Why Traditional Builds Stall Growth in Brazil
dApp interfaces frequently suffer from sluggish wallet connection flows, unhandled RPC rate limits, and clunky transaction states that cause user churn in Brazil.
Code-Level Precision & Verified High Performance
I architect production Web3 frontends utilizing Next.js 16, Wagmi v2, Viem, and AppKit with optimistic transaction states, multi-RPC failover providers, and sub-second indexed data querying via Subgraphs.
Enterprise Engineering Deliverables
Multi-Wallet Connect Architecture
Integrate AppKit / RainbowKit with MetaMask, Coinbase Wallet, Phantom, and WalletConnect v2.
EVM Smart Contract Integration
Type-safe smart contract interaction with Viem and autogenerated ABIs.
Real-Time On-Chain Indexing
Query blockchain event logs, token balances, and NFT metadata via Subgraphs / Alchemy.
Optimistic UX & Transaction Lifecycle
Real-time pending, confirmed, and failure feedback with automatic gas estimation.
Zero Legacy Debt. Built for Modern Scale.
// Type-Safe Smart Contract Read with Wagmi & Viem
import { useReadContract } from 'wagmi';
import { TokenAbi } from '@/contracts/TokenAbi';
export function TokenBalanceDisplay({ address }: { address: `0x${string}` }) {
const { data: balance } = useReadContract({ abi: TokenAbi, address: CONTRACT_ADDR, functionName: 'balanceOf', args: [address] });
return <span>{balance?.toString()}</span>;
}Outcomes That Drive Revenue in Brazil
4-5 Hours Working Overlap with São Paulo Tech Hub. Active in BRT (UTC-3).
International Wire, Stripe, or Wise in USD with formal invoice and milestone-based escrow.
International enterprise NDA protection with 100% intellectual property transfer to your company.
Got Questions? Clear Answers for Brazilian Clients.
Can you support multiple EVM chains (Ethereum, Arbitrum, Base, Polygon) for our dApp in Brazil?
Yes. Wagmi natively handles automatic network switching and multi-chain contract execution with zero friction for your users in Brazil.
Ready to Build Next-Gen Architecture for Your Brand?
Get direct access to a Senior Full-Stack & AI Architect. No account managers, no junior delegators. Sub-second load times guaranteed.