- along with Otis Gospodnetic (and Mike McCandless, 2nd edition), co-authored "Lucene in Action"
- Lucene/Solr committer and member of the Lucene PMC and the Apache Software Foundation
- Professional Lucene/Solr experiences:
- Applied Research in Patacritism: Collex/NINES, ideas/coded shared and evolved into Blacklight], Flare, and [http://projectblacklight.org/
- Co-founder and member of Lucidworks technical services team: delivering training, assisting customers with their search application success, and doing some caretaking of the Solr community/code/site.
- Runs the Charlottesville Apache Lucene/Solr Meetup group
- Has presented at numerous conferences and events, with many of the slide decks available at Erik's slideshare