I'd like to welcome Adrien Grand ("jpountz") to our team (long overdue...). Adrien is an Apache Lucene committer, and some of his contributions include Stored Field Compression, Reduced transient memory when merging (and many more). He also maintains the LZ4 compression codec in Java (the fastest Java compression out there). Adrien has been heavily active with Elasticsearch for some time.
With someone of Adrien's scale, amazing things will happen for both Apache Lucene and Elasticsearch now that he is fully dedicated to both projects.
p.s. we are hiring.