Full-Stack Engineer (Node / React)
Full-stack engineer specialising in payment systems, ledgers, and high-throughput APIs. I ship production-grade TypeScript with strong testing and observability from day one.
Double-entry ledger service
Designed an idempotent ledger handling 4M+ daily entries.
Subscription billing platform
Built metered billing with Stripe and dunning workflows.
Staff Engineer
Remote.com · Jan 1, 2021 – Present
Payments platform, payouts, and contractor billing.
Marcus Bellweather
"Tomás knows payments deeply. The ledger design was rigorous and well-tested."
BSc Computer Engineering
Instituto Superior Técnico · 2012–2016
AWS Solutions Architect
Amazon Web Services · 2022