Meta Production Engineer reviews

The cons at Facebook mostly fall under the heading of "growing pains". Technologically, things move so fast that the layers of the technology stack are often in flux. If you are building a system that depends on other systems at FB, be ready for them to change underneath you. Nothing stays the same for long at Facebook. Every layer of the stack changes, and changes quickly. At the human level, the company has also grown very quickly which means many of the lower level managers are new or inexperienced or got promoted to management for being good with computers (but not necessarily with people). It can be frustrating to report to junior managers and/or people who are clueless about social skills. With that said, the higher level, more senior managers tend to be really good and their skill often "trickles down" in various ways.

The environment may be too stressful for some, the work is challenging. Many people do not realize the scale of the infrastructure or the size of the datasets involved. You cannot simply take an idea that worked at another company and apply it successfully here, new scales require new solutions. If you don't like being in uncharted territory then this may not be the place for you.