I founded Tokutek with Tokutek Founder Michael A. Bender and Tokutek Founder Martin Farach-Colton. Tokutek was acquired by Percona in 2015.
Tokutek makes a library called TokuDB that incorporates some of our research ideas. In particular, Tokutek focuses on MongoDB performance and performance for MySQL and MariaDB. Furthermore one gets great mongodb compression as well as great mysql and mariadb compression. There are some extras that aren't really part of the data structure, but are more to do with good engineering at Tokutek are hot schema change for mysql and mariadb as well as multi-statement transactions for MongoDB.
I also helped found Cilk Arts, but couldn't commit enough time to really participate, so I'm not really a co-founder. Cilk Arts was acquired by Intel, and now Cilk is part of the Intel compiler and also appears in GCC and some branches LLVM.
I was previously involved at Thinking Machines Corporation (something like Employee number 12) and Akamai (something like employee number 100.)