Here's the lessons all ex-Google colleagues I've worked with have brought with them to their new jobs:

1. Use Bazel for everything. Doesn't matter that the documentation sucks and it's unbelievable bloat for smaller companies: use it anyway. Use it for everything.

2. Write things from scratch. Need a protobuf parser in C? Just write one up instead of using any of the battle-tested open source options.

3. Always talk down to frontend engineers and treat them as lesser/ not real engineers. Real engineers are backend engineers. Frontend is so easy that they can do a perfectly fine job if needed. Make sure to use Bazel for all frontend builds.

4. Did I mention Bazel? It's the solution to all problems for all companies.