Selected technical work and open source contributions.
Built payment processing system handling ACH, wire transfers, and card payments. Designed idempotent APIs to ensure exactly-once processing. Implemented webhook delivery system with automatic retries and failure recovery.
Designed and implemented distributed task processing system for background jobs. Built priority queuing, rate limiting, and dead letter queue handling. Deployed across multiple regions with automatic failover.
Created API gateway with request routing, authentication, and distributed rate limiting. Implemented sliding window algorithm for accurate rate limiting across multiple servers. Added circuit breakers for downstream service protection.
Set up company-wide observability infrastructure. Implemented distributed tracing for request flows across services. Built dashboards and alerts for service health, performance, and business metrics.
Built internal tool for zero-downtime database migrations. Automated schema changes, data backfills, and rollback procedures. Used by multiple teams for production deployments.
Regular contributor to infrastructure and tooling projects. Contributions include bug fixes, performance improvements, and documentation. Active in database drivers, HTTP libraries, and CLI tools.