Developing system to detect and enforce malicious links/contents sharing on Facebook platform

Developing system to detect and enforce repeated offenders and highly suspicious entities using Graph Learning Algorithms

Developing system to detect and enforce civic related abusive behaviors

Maintaining systems for detecting and enforcing fake/phished/compromised accounts, abusive contents and user behaviors

language: Hack (PHP), Python 3, Haskell, SQL, Javascript, Thrift, Bash

frameworks and tools: Presto, Dataswarm (data pipeline), React, Hive, Memcached, Atom, Web Stack, Alerting/Monitoring System, Scuba, Graph storage, CI, Testing and etc.

Voucher Inventory Service Team

Developing and maintaining a large-scale web application for Groupon's inventory service with Ruby on Rails framework that serves global inventory data. Maintained a primary Rails API at >7MM RPM, which is used by all of Groupon’s consumer and merchant facing applications

Local Third Party Ingestion Team

Constructing a partner integration platform responsible for $2.5 M in monthly gross billings. Designed a massive ETL pipeline responsible for constructing Groupon deals out of third party inventory (such as Goldstar, FanXchange, Viator) by using Java 8 stream processing. Coordinated large-scale feature development across multiple teams

Finance Engineering Team

Developing a global merchant payment service for transactions, invoices and merchant payments calculation for all Groupon verticals. Integrated with Netsuite general ledger system, JPMC banking partners and Salesforce payment contract details

Tech stack: Ruby on Rails, Java 8, Dropwizard, Resque, Sidekiq, Memcached, MySQL, Postgres, Hibernate, JDBI, ActiveRecord, Junit, Rspec, TDD, CI