Chris Pacia is a Senior Developer at OB1, the parent company of OpenBazaar.
Pacia has been involved with a wide variety of Bitcoin projects.
In early-2015, Pacia introduced a wallet called “Bitcoin Authenticator”. The desktop wallet featured automatic 2-factor authentication by using multisignature with a smartphone as a second signing device. While the wallet received positive feedback on reddit, it appears that no further development is being done on the project.
Pacia has been vocal about his disagreement with the current path of Bitcoin Core development. He has come out against proposals like Lightning Network and replace by fee, and supports scaling solutions through hard forks to increase the block size. His thoughts on these subjects can be found in the many articles published on his blog.
Matt Whitlock and Chris Pacia Debate Replace by Fee Proposals (Podcast) - NeoCash Radio