Open to opportunities

Brendenson Andrade

@brendenson

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I build high-throughput card payment systems, cryptography services, and financial ledgers in Go and Rust.

Brazil

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What I'm looking for

I'm looking to build reliable, high-scale payment and financial systems where correctness, security, observability, and performance under load matter.

At Nuvy.ai, I build card authorization platforms in Go, including ISO 8583 authorizers certified with Visa, Mastercard, Redeban, Credibanco, and Goupayment. I also own payment cryptography services backed by HSM and AWS Payment Cryptography, covering key exchange, MACs, PIN blocks, CVV, and ARQC/ARPC validation.

I developed a Rust double-entry financial ledger over PostgreSQL and raised its goodput under overload from 437 to 3,933 authorizations per second. My work focuses on systems where PCI DSS compliance, correctness around money, and resilience under load are inseparable.

Previously, I built acquisition journeys and offer engines at Itaú Unibanco, payment platforms at Asaptech, and high-scale Go services for Red Ventures, Delivery Much, CosmoBots, and 7itec. I work across Go, Rust, distributed systems, Kubernetes, observability, databases, and payment infrastructure.

Experience

Work history, roles, and key accomplishments

Current

Staff Software Engineer

Current

Nuvy.ai

Apr 2026 - Present (5 months)

Engineering of the card authorization platform in Go, including ISO 8583 authorizers certified with major brands and a closed-loop payment gateway. Design and development of the shared authorizer core, extraction of the card authorization read path, ownership of payment cryptography, and development of a financial ledger in Rust.