@payments_paulo·6d agosampleTechMid-level
Backend engineer, payments infrastructure
Idempotent Ivan
Backend engineer, payments infrastructure
· · · ·
Summary
Backend engineer specializing in high-volume payment systems. Most recently cut checkout p99 from 900ms to 210ms while tripling peak throughput.
Experience
Senior Software Engineer · Cyberdyne Systems
2022 – Present
- Cut checkout p99 latency from 900ms to 210ms by moving fraud checks off the synchronous path
- Scaled the payments API from 40K to 300K requests per minute through two holiday peaks with zero downtime
- Eliminated duplicate-charge incidents (11 per month to zero) by adding idempotency keys across 14 endpoints
Software Engineer · Duff Beverage Group
2019 – 2022
- Built the retry-and-reconciliation pipeline that recovered $1.2M in failed captures in its first year
- Cut deploy time from 40 minutes to 9 by parallelizing the integration test suite
Education
Xavier's Institute
BS, Computer Science
2015 – 2019
Skills
Languages: Go, Java, SQL
Infrastructure: Kubernetes, Kafka, Postgres