Ask HN: Building LinkedIn clone, recommend me a stack

If you expect this to grow into a huge platform, as in completely replace LinkedIn, use Django, if not, use MeteorJS. Django will allow you to scale very quickly, as it is more robust. However, the learning curve for Meteor is much smaller and will allow you to get a very modern, reactive application up and running quickly.

If you are doing it as a CV showcase type thing looking for a job I would do it in C# , why are you doing it?

Use diaspora or gnu social as a framework, the code is already there and open source.