Growth Hacking with Data Science — 600% Increase in Qualified Leads with Zero Ad Budget

About 2 years ago, I worked as a data engineer alongside a team of extra-ordinary gentlemen where our daily activities involved keeping the data lake (3 node Hadoop Cluster) running. We had standard Hadoop ETL jobs starting with Sqoop jobs extracting data from our OLTP system (MSSQL Server) and loading into HDFS. Transformations with data flow language, Pig Latin,
and loading into Elasticsearch for search analytics and Kibana dashboards for visualizations.