My startup&#x27;s experience was similar.  Our core is an Angular app to a Django backend API.<p>Django and Rails are roughly the same level of maturity.<p>The approach that&#x27;s worked best for us is to keep all of the business logic and CRUD-y stuff in this Django base, then spin out dedicated microservices in the special cases e.g. CPU-bound tasks.  I think most startups end up with a similar architecture.