At AT Media we publish ApartmentTherapy.com and TheKitchn.com. This is our current engineering stack & toolchain as of 10/21/2015.
Our engineering & design teams currently consist of 9 (incredibly talented, friendly & collaborative) engineers (3 senior, 3 junior), web designer, product manager and CTO/short stop. We're currently hiring a second product manager and designer.
Our team (and much of the company) works remotely. Slack has quickly become our critical communication channel. We make heavy use of Slack integrations including our own bot to manage code deployment & staging environments.