Post on Medial

Make a project on the startup you wise to join. Post it on social media platform such as Twitter and LinkedIn, tag the founders and HR or anyother relevant individual. Or you can just message directly founders of startup and ask if they need you pit

We can contact them through linked in ?

Yes you can. If possible try getting their email. If not get respond in LinkedIn you can try commenting on there recent post.

Is there any website to get email of startups?

There are many mostly paid. There is one free method which use: For example- Medial is also a startup. When you go to playstore and look in app support section you will get one official support email of the company. For Medial it is "help@medial.ap

Thank you brother for valuable suggestions