Projects

Led migration of Udemy's Attribution System from Python/Django to Kotlin/Spring Boot, untangling complex sync and async inter-service communication patterns.

Rewrote Udemy's refund system in Kotlin/Spring Boot using a purely functional approach with ArrowKT, reducing chargeback rates by up to 3%.

Implemented automated global sales tax calculations across Udemy's checkout, enabling VAT compliance in all markets and driving significant revenue growth in tax-exclusive countries.