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:

• Helped take a multi-region payment API from design to production, letting regional banks' customers move funds through PayPal and Venmo.
• Redesigned a transaction service processing more than $1 billion a year, with zero production incidents after launch.
• Built a TypeScript ledger that recorded every transaction on the platform, encrypting personal and financial data in transit and at rest.

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.