Gabriel Santos Cardoso

Software Engineer — Backend, Blockchain & Cloud

Barcarena, Pará, Brazil · +55 91 99213-0338 · eng.gabrielscardoso@gmail.com

Dear hiring manager,

I am writing to introduce myself as a Software Engineer with more than five years building production systems for blockchain, fintech, telecommunications and cybersecurity companies. I work end to end — from architecture and backend services in Go, Node.js, PHP and Java to frontends in Vue, React and Angular — and I am used to distributed, multicultural and asynchronous teams.

Recently I have been shipping decentralised systems on Hyperledger Fabric, Besu and Ethereum (including Zero-Knowledge Proof pilots and digital-identity work), designing loyalty and payments platforms for global brands, and modernising legacy stacks into event-driven microservices on AWS and GCP. Earlier roles covered cryptocurrency products, institutional repositories and full-stack product ownership, so I am comfortable owning a module from discovery through release.

What I bring

Strong backend and API design, with a bias toward clear contracts, automated tests and CI/CD
Hands-on blockchain and digital-identity experience, not only as a side interest
Comfort moving across the stack when the product needs it, without losing focus on security and performance
A product mindset: I have led modules as both engineer and Product Owner, talking to clients and stakeholders as much as to the codebase

I am immediately available and would welcome a conversation about how I can help your team ship reliable software. Thank you for your time and consideration.

Best regards,
Gabriel Santos Cardoso