peixer

Blockchain Developer

5+ years in blockchain across Solana, Flow, Cosmos, Polygon, and more. Built a Solana-based platform with real-time token scanning (6B+ tokens), wallet tracking, and high-throughput trading tools (2000+ tx/s, 5+ TB of data). Worked on projects like Melanie’s Marketplace (Flow grant), SCMP NFTs, and integrated Kadena into Enkrypt Wallet. Passionate about DeFi, ZK, big data, and hackathons.


Experience: 11 years

Yearly salary: $100,000

Hourly rate: $80

Nationality: 🇧🇷 Brazil

Residency: 🇮🇹 Italy


Experience

CTO & Co-Founder
DegenFi
2024 - 2025
Led a development team of 6 engineers, driving product execution and technical strategy. Collaborated with CEO on product direction, balancing rapid iteration with technical depth. Built a high-performance Solana indexer processing 2,000+ on-chain messages per second. Developed a real-time memecoin trading platform with high-throughput analytics and custom filtering. Integrated with PumpFun, Meteora, Orca, and Raydium platforms, to buy/sell/fetch data. Created a wallet tracking system for Solana. Launched 4 NFT collections on Solana, using Metaplex. Developed chart ux in real-time for millions of tokens. Built a security monitoring system for SPL tokens, AMMs, and liquidity pools. Architected backend systems to manage a 4+ TB database. Structured microservice system to support millions of requests/transactions per second. Built from scratch projects as principal developer, responsible for creating all the infrastructure on the cloud and the code base.
Blockchain Developer
AE Studio
2021 - 2024
Developed smart contracts for the SCMP NFT Collection on the Flow Blockchain. Built smart contract and indexer infrastructure for Melanie’s Marketplace, a top P2P NFT platform on Flow. Integrated the Kadena blockchain into the Enkrypt Wallet, delivering full command and wallet support. Built a blockchain from scratch using the Cosmos SDK, integrating it with ML models. Conducted internal audits for smart contracts written in Solidity and Cadence. Worked across multiple ecosystems: Flow, EVM, Solana, FVM, and Kadena using Cadence, Solidity, and Rust.
CTO & Founder
Icetec Solutions
2017 - 2021
Founded and scaled a 12-person software house. Led meetings to brief projects and define project goals with the end client. Defined technical/project internal processes. Led the development of a medium-sized project using NestJS with microservices, refactoring an old codebase, and building new modules. Designed and implemented infrastructure to support multi-tenancy across environments. Delivered 3+ full-stack platforms (app, website, admin dashboard) for clients in education, real estate, and security. Built 3+ AI-powered chatbot systems tailored to specific business needs. Designed and launched 9 advanced crypto trading bots operating across multiple exchanges.

Skills

ethereum
postgres
solana
typescript
cto
english