Case Studies
Deep dives into real projects — the situation, approach, and measurable outcomes.
Rebuilding Payment Retry Logic at Scale
Stripe's retry logic for failed payments was a monolithic system causing cascading failures under peak load. I led the redesign into an event-driven retry service — reducing failed payment recovery time by 60% and eliminating 3 recurring production incidents per month.
Scaling Checkout for Black Friday
Shopify's checkout infrastructure wasn't built for 10x BFCM spikes. I designed a caching and queue-based session architecture that processed 6.3 million checkouts in 24 hours with zero downtime — a 40% year-over-year increase.
Real-time SMS Notification Platform
Rebuilt Twilio's internal notification delivery pipeline from a polling-based architecture to an event-driven Kafka system — lifting the delivery SLA from 94% to 99.7% and slashing median latency from 4.2 seconds to 340ms.
Open Source: ActiveCache Ruby Gem
Built and published an open-source multi-layer caching abstraction for Ruby/Rails that has accumulated 1,200+ GitHub stars and is used in production by 50+ companies.