You joke, but I remember seeing a talk by Wunderlist CTO who has pretty much that. Also polyglot company and microservices in random languages. Can't find the talk now, but https://www.infoq.com/news/2014/11/gotober-wunderlist-micros... mentions 60 services at least.
andix|4 days ago
https://github.com/andi0b/vibe-todo