Feb 2022 – Present · 4 yrs 4 mos

Feb 2022 – Present · 4 yrs 4 mos

• Seller Compliance (Current)
• Tax Compliance Platform: Designed and built an end-to-end platform automating tax registration validations for ~300k EU sellers using AWS Step Functions, Lambda, DynamoDB, and Glue for orchestration, processing, and notifications.
• Impact: Derisked $40B GMS against potential regulatory actions. Reduced manual validation load by 80% and ensured all impacted events were processed within the 24-hour SLA.
• Enforced ~5,800 bad actor sellers in 3 months of launch
• ML-Based Identity Verification: Built a system to automatically validate seller-submitted tax identities against external data sources using NLP. Achieved 60% automation of the verification workflow, projected to save 63 headcount in 2026 while maintaining over 99% accuracy.
• Multi-Region Event Pipeline: Designed an event-driven data pipeline (SNS + Fargate) across 4 EU regions, replacing a synchronous API design (~500 TPS) with an async model (~50 TPS) for better fault isolation and lower cost. Built config-driven killswitch for operational safety. Achieved 100% test coverage with 1.7:1 test-to-code ratio.
• Production Safety & Reliability: Designed and implemented kill switch mechanisms, automated anomaly detection, and operational runbooks. Established design review standards for operational safety, raising the engineering bar team-wide.
• Selection Guidance (2022 – 2024)
• Recommendation Platform: Built a backend-driven platform serving personalized product recommendations based on listings and demand forecasting. Achieved 10,000+ daily views in the first month.
• Data Grid Architecture: Evaluated and chose a client-side data model over the org-standard server-side approach, saving ~7 weeks of development. Built custom filtering components with zero backend calls post-render.
• Data Model Optimization: Proposed a normalized, entity-agnostic data model during a peer team's design review, saving ~6 GB of storage and reducing ElasticSearch compute.
• Catalog Scaling: Designed backend to expand produ