Yi Xu Email & Phone Number

United States

Working as a software developer in SimChange Team.• Inspect and fix current bug/issue reported by customers on production.• Support new services according to the request from the customer.• Quick response to fix the urgent product issue and make our system more stable and be protected.• Create new functions make currently system runs more fluently/stable/easy-to-dev.Working as a software developer in Test Productivity Team.• Inspect and fix current bug/issue reported… Show more Working as a software developer in SimChange Team.• Inspect and fix current bug/issue reported by customers on production.• Support new services according to the request from the customer.• Quick response to fix the urgent product issue and make our system more stable and be protected.• Create new functions make currently system runs more fluently/stable/easy-to-dev.Working as a software developer in Test Productivity Team.• Inspect and fix current bug/issue reported by QA team in the test framework.• Support new services according to the request from QA team.• Create new functions make currently test cases runs more fluently/stable/easy-to-dev. Show less

San Francisco Bay Area

• Solely design and implemented an ETL Dashboard (full stack) for Tapjoy’s Data Science & Analytics team using JS, CSS, HTML, Python Flask Framework, Bootstrap, Datatables on service layer, and RDS MySQL as backend, which dramatically improved daily operation efficiency of the data team. The Dashboard offers CRUD operations to manage the full sets of ETL operation as well as permissions for different user roles. • Involved in Data Visualization projects on Tapjoy’s Data Science Dashboard… Show more • Solely design and implemented an ETL Dashboard (full stack) for Tapjoy’s Data Science & Analytics team using JS, CSS, HTML, Python Flask Framework, Bootstrap, Datatables on service layer, and RDS MySQL as backend, which dramatically improved daily operation efficiency of the data team. The Dashboard offers CRUD operations to manage the full sets of ETL operation as well as permissions for different user roles. • Involved in Data Visualization projects on Tapjoy’s Data Science Dashboard, in particular A/B test pages, using AngularJS and Highcharts in addition to all popular front-end technologies.• Implemented a web-service tracking real-time revenue which can be broken down by Data Science algorithms and segments, using Spark streaming as data injection source and MemSQL as hot data sink. Show less

San Mateo

• Worked in new product development team helping the company’s R&D department launching new customer facing products.• Successfully implemented the concept to integrate Apache Spark’s python API with SnapLogic’s core products within 3 months of work which significantly improved efficiency of the ETL pipelines.• Worked on benchmark of the performance between new sort pipeline using Spark on EC2 and the existing ones using MapDB.