At Cash App, I worked on the Trust & Disputes platform supporting ~20M customers and ~40K daily disputes. My focus was building scalable, reusable infrastructure for fraud and account-level claim workflows.
• Architected Cash App’s first non-transaction-based claims model, establishing reusable primitives later extended by other teams (e.g., denylist appeals, missing-transaction claims)
• Designed distributed investigation workflows using Temporal and event-driven architecture
• Replaced fragmented legacy decision logs with materialized view–backed activity infrastructure
• Led rollout of dispute visibility within enriched receipts (1% → 100% phased launch)
• Designed and implemented regulatory-aligned customer claim withdrawal workflow
• Led SEV response for appeal workflow failures, implementing backfills and architectural safeguards
Selected for Elevate Engineering Program (top 20%).
Technologies: Kotlin, Temporal, GraphQL, MySQL, React