I migrated my team of ~20 developers to Bazel, and I have to say I don’t think it is that complex. Not only don’t we have 3 full time engineers devoted to Bazel, as I do everything myself, but in fact it’s not even my main role to maintain the build system.

We do not use some of the more complex features like remote execution, but we do enjoy all the other features including remote caching. We reduced build times by 92% after the migration.

So my advice would be, try it and see for yourself if you think it’s worth the hassle. For my team, it definitely has been.