About the Reviewers

Rajiv Tiwari is a freelance big data and cloud architect with over 17 years of experience across big data, analytics, and cloud computing for banks and other financial organizations. He is an electronics engineering graduate from IIT Varanasi, and has been working in England for the past 13 years, mostly in the financial city of London. Rajiv can be contacted on Twitter at @bigdataoncloud.

He is the author of the book Hadoop for Finance, an exclusive book for using Hadoop in banking and financial services.

Wissem El Khlifi is the first Oracle ACE in Spain and an Oracle Certified Professional DBA with over 12 years of IT experience.

He earned the Computer Science Engineer degree from FST Tunisia, Master in Computer Science from the UPC Barcelona, and Master in Big Data Science from the UPC Barcelona.

His area of interest include Cloud Architecture, Big Data Architecture, and Big Data Management and Analysis.

His career has included the roles of: Java analyst / programmer, Oracle Senior DBA, and big data scientist. He currently works as Senior Big Data and Cloud Architect for Schneider Electric / APC.

He writes numerous articles on his website http://www.oracle-class.com and is avaialble on twitter at @orawiss.