No, but I am currently in a startup that mainly uses DyanomoDB (similar to Mongo) with support from Elastic for more search-based queries. We've found DyanmoDB to be great and we don't feel hindered by the lack of relational-ness.
I will say in case anyone doesn't understand how this might be possible, relational querying is possible in document databases, but they essentially require just different ideas to achieve. In Dynamo, you might need to create secondary indices for example.
Personally I love Postgres and would not mind if we had gone that direction but the more I use DynamoDB the less I feel like Postgres is the "only way"
I will say in case anyone doesn't understand how this might be possible, relational querying is possible in document databases, but they essentially require just different ideas to achieve. In Dynamo, you might need to create secondary indices for example.
Personally I love Postgres and would not mind if we had gone that direction but the more I use DynamoDB the less I feel like Postgres is the "only way"