Waterloo, Ontario, Canada
- Implemented AI skills that helps engineers write and validate database backfills. - Designed product metadata persistence architecture with centralized DynamoDB based persistence layer to replace fragmented SQL tables across microservices, ingested data through Airflow DAGs and ETL pipelines, eliminating 7M+ replication events and reducing data inconsistencies for 10M+ products. - Led backend development of new US sales tax engine using Kotlin, building core integration with 3rd party vendor into existing payment flows, added Redis caching layer to avoid identical re-requests, defined Datadog observability metrics and compliance-grade validation to enable accurate tax calculation and reporting for US consumable orders, eliminating estimated tax liability of $1M+ per quarter. - Delivered end-to-end feature for custom tables in bulk editor, built clear table management UI using Typescript with React and implemented supporting backend endpoints, enabling users to create, update, and manage multiple table views.
- Orchestrated multi-agent system including four individual sub-agents with OpenAI Agents SDK to automate product information enrichment through web-scraping of key product attributes and reviews. - Led end-to-end implementation of product attributes enrichment feature: designed MySQL schemas and built RESTful APIs. - Served as DRE for color swatches auto-assignment feature, increasing swatch coverage across all surfaces to facilitate customer visualization of products.
Implemented JWT token-based authentication with custom interceptors for secure user sessions and API request handling. Integrated AliCloud SMS for real-time SMS-based login verification. Optimized query performance from 3s to 103ms through Redis caching, enabling faster retrieval of recent user behavior data for more efficient collaborative recommendation algorithm. Enhanced the efficiency of CRUD operations by using Spring Data JPA to streamline data management of AliCloud remote database. Utilized Swagger UI for API documentation and Docker for containerization of backend services.