Twitter’s Reliability Journey

Twitter’s SRE team is one of the most advanced in the industry, managing the services that capture the pulse of the world every single day, and throughout the moments that connect us all. We had the privilege of interviewing Brian Brophy, Sr. Staff SRE, Carrie Fernandez, Head of Site Reliability Engineering, JP Doherty, Engineering Manager, and Zachary Kiehl, Sr. Staff SRE to learn about how SRE is practiced at Twitter.

As a company, Twitter is approximately 4,800 employees strong with offices around the world. SRE has been part of the engineering organization formally since 2012, though foundational practices around reliability and operations began emerging earlier. Today, SRE at Twitter features both embedded and core/central engagement models, with team members that hold the SRE title as well as those without but who perform SRE responsibilities. Regardless of their role or title, a key mantra among those who care about reliability is “let’s break things better the next time.”