pietromartinso

Senior Blockchain Architect & Developer | + Smart Contracts Delivered | $50 M+ Tokenized | De Fi & Multichain Solutions

I am a Senior Blockchain Architect & Developer with 18+ years of software engineering and 7+ years dedicated to Web3, DeFi, and tokenization. I have designed and deployed 50+ Solidity smart contracts and 9+ DeFi dApps, supporting swaps, bridging, and multichain auctions. My work consistently combines technical depth with business impact, from privacy-first CBDC solutions to enterprise-grade tokenization pipelines.

Technically, I specialize in secure smart contract development (ERC20, ERC721, ERC1155, advanced standards), with 95%+ automated test coverage (Hardhat + TypeChain). I have engineered backends handling 2,700+ TPS, processing 100+ large XML files/day (~600MB each, 800K+ receivables), and deployed scalable cloud integrations using AWS (ECS Fargate, Lambda, SQS, RDS, DynamoDB, S3).

On the business side, I led tokenization initiatives that moved over R$ 300M (US$ 50M+) in receivables in just 4 months (+76% growth) and supported Parfin’s US$ 10M Series A fundraising. I have delivered projects for global financial institutions (J.P. Morgan, Central Bank of Brazil, leading Brazilian banks, and acquirers) and consumer brands (Campari, Stock Car), bridging traditional industries with decentralized technologies.

I thrive in environments that value transparency, measurable impact, and technical excellence, always aiming to deliver solutions that scale securely while driving real business results.

Experience: 7 years

Yearly salary: $120,000

Hourly rate: $60

Nationality: 🇧🇷 Brazil

Residency: 🇧🇷 Brazil

Experience

SR Web3 Fullstack EngineerDeveloper

Parfin

2024 - 2025

Delivered 9+ DeFi dApps and 50+ Solidity smart contracts for EVM-compatible blockchains, with 95%+ automated test coverage. Designed tokenization pipelines processing 2,700+ TPS and 100+ large XML files/day (~600MB each, 800K+ receivables). Developed privacy-first solutions for the Brazilian CBDC (DREX) using Zero-Knowledge Proofs (ZKPs) and Fully Homomorphic Encryption (FHE). Built proofs of concept for major financial players including J.P. Morgan, and collaborated with 5+ banks, acquirers, and registrars to deliver production-grade Web3 infrastructure. Also supported Parfin’s US$ 10M Series A fundraising.

Senior Blockchain Engineer & Consultant

Exadel

2024 - 2024

Consulted at Parfin to deliver CBDC privacy solutions for the Brazilian Central Bank’s DREX project. Designed and deployed POCs for global financial institutions including J.P. Morgan, focusing on secure smart contract design and privacy-preserving architectures. Developed decentralized applications in Solidity with robust automated testing and CI/CD pipelines, and integrated enterprise backends with blockchain infrastructures using Node.js, TypeScript, and NestJS, ensuring institutional-grade security and resilience.

Post-degree Higher Education Coordinator

Escola da Magistratura Federal

2020 - 2025

Coordinator at Pós-graduação em Privacidade e Proteção de Dados (Post-degree at Data Privacy and Protection) and Pós-graduação em Direito dos Criptoativos e Blockchain (Post-degree at Blockchain and Crypto Assets Law).

C++ Developer and Higher Education Professor

Faculdade de Engenharia e Inovação Técnico Profissional - FEITEP

2019 - 2019

At FEITEP College I developed algorithms and data structures back-end systems for Windows based desktop environments in C/C++ languages. Also worked as higher degree professor of Operating Systems classes, Computer Architecture and Organization classes and Programming Logic and Algorithms classes at the Computer Engineering Bachelor's Degree course.

Computer Science Academic Coordinator

Pontifícia Universidade Católica do Paraná

2019 - 2019

Hired to project a new higher degree course intended to integrate teaching of information technology and computer science skills with business and entrepreneurship skills. The pedagogic project aimed to fill the perceived gap between academic and market thinking about what is meant to teach to undergraduate students.

Blockchain developer, consultor and instructor

GoBlockchain

2017 - 2022

Delivered 30+ smart contracts for 10+ enterprise clients, covering ERC20, ERC721, ERC1155, and custom marketplace protocols. Developed NFT marketplaces for global brands like Campari and Stock Car, implementing auctions, role-based access control, and payment splits. Optimized high-frequency smart contract functions to reduce gas costs by up to 30%, while ensuring security and auditability through tools such as Slither, MythX, Echidna, and OpenZeppelin test suites. Also served as an instructor at GoBlockchain Education, training developers in Solidity, Ethereum, and Web3 architectures.

Higher Education Professor

Unicesumar

2016 - 2025

At Unicesumar I develop algorithms and data structures back-end systems for Windows based desktop environments in C/C++ and Python languages. Also act as higher degree professor of Operating Systems classes, Computer Architecture and Organization classes, Programming Logic and Algorithms (C/C++ and Python) and Databases & SQL classes at the Software Engineering Bachelor's Degree course as well as Systems Analysis and Development course, Information Technology Management course, Digital Games course, Internet Systems course and Data Science course.

C++/Java Developer and Higher Education Professor and Coordinator

Unifamma

2016 - 2018

At Unifamma Universitary Center I developed algorithms and data structures back-end systems for Windows based desktop environments in C/C++ and Java languages. Also worked as higher degree professor of Operating Systems classes, Computer Architecture and Organization classes, Programming Logic and Algorithms (C/C++) classes and Object Oriented Programming (Java) classes. Yet, I also acted as coordinator of higher education courses, namely: Bachelor in Software Engineering, Bachelor in Information Systems and Bachelor in Production Engineering.

Software Development and Bug Fix

Benner

2015 - 2015

As System Analyst and Software Developer, I used to implement new features and fix bugs at health care systems using .NET Framework (C# and ASP.NET) + Oracle and SQL Server databases.

Computer Vision Developer and Researcher

Universidade Estadual de Maringá

2013 - 2015

Since the beginning of my master degree scholarship at State University of Maringá, I worked on the development of a computer vision based human-machine interface that was intended to control a wheeled mobile robot (WMR). The robot had the same liberty degrees that a wheelchair does. The goal, was to research and develop a method that was robust enough to allow paraplegic person to control WMR with its eyebrows and head movements only.

Software Development and Bug Fix

CITS - Siemens Enterprise Communications

2011 - 2012

At this job I used to be outsourced from CITS to german Siemmens Enterprise Communications. My responsibilities were to build new features at telecom software as well as bug fixing. Worked with C, C++, Managed C++ and C# languages; Windows and UNIX based operating systems development; SIP and H.264 protocols where used as means of implementing VoIP conferences at the Siemmens OpenScape software.

Skills

aws

blockchain

blockchain-engineer

evm

git

golang

javascript

linux

mongo

nestjs

node

postgres

python

react

remix

solidity

english

portuguese

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