Amazon 
SDE 2 — Amazon Ads, Amazon Ads, Mar 2025 – Present
- Designed and delivered multiple end-to-end features across API models, backend services, website backend, React frontend, and CDK infrastructure, contributing to ~18 packages in the Ads Permission Delegation Platform
- Architected and implemented batch ADD/DELETE APIs with detailed error handling, region validation, and CloudWatch-backed status metrics; refactored policy configuration for always-on policy-based access control
- Built dependency service monitoring across accessor layers with CloudWatch dashboards and alarms, improving observability and incident response; resolved Sev-2 issues and mitigated dependency confusion vulnerabilities
- Built a micro-frontend KPI visualization widget from scratch using React and Webpack Module Federation, including CDN asset delivery, i18n support, and CDK-based deployment pipelines
- Authored 75+ production code reviews and reviewed 140+ peer changes across backend, frontend, and infrastructure