Bryan Guzman

Senior software engineer building backend systems that hold up when it matters.

I'm based in Brooklyn, NY and looking for a senior role. If your team cares about building reliable software, I'd love to hear from you.

At Check Digit, I:

• Led the idempotency redesign of a service processing more than $1 billion a year, ending duplicate charges on retried payments with no production incidents.
• Designed and built a transfer ledger on my own, recording every payment request and response for a multi-tenant bank payments platform.
• Served as primary engineer on a benefits card platform, whose card processor checked balances, posted debits and credits, and approved or declined card transactions.

I work mostly in TypeScript, Node.js and AWS. Most of my experience is in payments, where I learned to design and ship changes to systems that can't afford to break.