Grant Ingersoll is CTO at Lucidworks, provider of Fusion, but his claim to the open source community are his contributions to Apache Lucene, Solr, and Mahout. (He co-founded Apache Mahout in 2008 with the goal to build an environment for quickly creating scalable machine learning applications.) This year, Grant will be speaking at OSCON 2015 about building a next generation QA system with open source tools and about how to use Apache Solr for data science.