Here are some presentations on databases and data engineering. See also publications on the same topic.

All Things Open, Database Upgrade Testing, A DevOps Partnership

https://blog.pythian.com/pythian-things-open-2017/

Percona Live, Experience Using gh-ost in a Multi-Tier Topology

https://blog.pythian.com/pythian-at-the-perconalive-2017-open-source-database-conference/

All Things Open, MySQL Data Encryption at Rest

https://speakerdeck.com/dataindataout/all-things-open-2016-data-encryption-at-rest-in-mysql-and-mariadb

University of Ottawa Women in Science and Engineering, Technical Mentoring Panel

Triangle DevOps Meetup, No Blocking, Blocker

https://speakerdeck.com/dataindataout/no-blocking-blocker-an-operational-dbas-thoughts-on-working-with-development