Sr. Data Mining engineer

Business Title	Sr. Data Mining engineer
Requisition No.	27408BR
Category	Tech - Software Engineers
Work Location	eBay San Jose
Shift	Day
Primary Job Responsibilities	Team This position is part of the Trust and Safety (TnS) – Applied research group. We are responsible for applying advanced technology research to solve TnS business problems. TnS applications proactively prevent fraud, catch fraud, enforce eBay policies, as well as collect & mine data that will help build future Trust and Safety strategies. We build real time machine learning applications processing 100s of millions of transactions a day, learning from terabytes of historical data. Responsibilities Design and develop data preparation components and processes that extract and transform data across many DB tables and log files to prepare it for machine learning experiments. Build high performance and scalable data mining processes to sort, merge, join and aggregate large data files. Define complex SQL and other data extraction schemes to gather and filter needed data. Build statistical analysis tool to validate and analyze the various data pulls. Build high performance lookups for real time machine learning processes with appropriate indexing and memory optimization strategies. Work with a large cross functional team consisting of scientists and engineers from eBay research and engineering teams, as well as analysts and business leaders from TnS and other business teams.
Job Requirements	MS in computer science or related field with 3 years of relevant experience. Or BS in computer science or related field with 5 years of relevant experience A strong data analysis background with some exposure to statistical data analysis. 3+ years of large data processing experience with Abinitio or similar tool. Strong programming skills preferably with SAS or scripting (Perl / Python). 3+ years of hands-on SQL experience. Good communication skills, ability to work with large cross functional teams.
Education	Bachelors Degree Required
Sr. Data Mining engineer