Do we have any write ups or post mortems from WhatsApp employees prior to the acquisition and the massive buy out? I want to (artificially perhaps) peg my proj

Do we have any write ups or post mortems from WhatsApp employees prior to the acquisition and the massive buy out? I want to (artificially perhaps) peg my projects to a smaller cohort of employees if it means the stress to them is worth it if they have the autonomy to ship stuff on their own accord, for a general feeling of having a successful and useful career.