United States
Experienced in backend development and data infrastructure
• Built P2P payment core services for 60M+ user base • Automated Compliance mandatory business activity monitoring on detection signals from Machine Learning models, delivering campaigns to onboard customers creating business accounts • Designed a distributed idempotency layer to prevent double-spending, handling high-concurrency transactions with p99 latency • Led the technical compliance initiative for SOX (Sarbanes-Oxley) audit on refactored payment flows to ensure strict consistency and traceability, evaluating payment system impact and accuracy on financial report
Atlas data tiering service
• Designed and built scalable and high-performance data infrastructure and ingestion platforms processing billions of transactions and real-time customer activities; provided to data scientists the data marts to build models • Delivered Java and Node.js applications to parse, validate, transform and route the processed real-time data to Kafka topics and database • Launched Hive and Spark jobs to extract, transform and load data from different raw sources (Oracle, HDFS, etc.) to map online and offline features to users • Implemented data store to support API requests from Marketing, CRM (Customer Relationship Management) and Data Science teams to filter customer feature, schedule and respond to big queries from UI
Teaching Assistant of COMP 504/310 Object-Oriented Programming and Design
• Maintaining the GDC (GIS/ Data Center) website, databases and network drives with daily users. • Assisting lab patrons in using ArcGIS software with specialization in Python scripting. • Researching, creating, updating and processing datasets and their associated metadata for researches. • Performing administrative tasks. • Creating and editing new course materials, hands-on tutorials, and other technical documents.
• Worked on the Data Infra team to process customer related data across different platforms at Walmart