This transcends geography. Show competency by building something that demonstrates your technical ability. Better yet, build 2 things.
Be able to demo your projects, and talk at length about the technical challenges in building them.
That said, your best best is always going to be small / medium sized companies. Google, Facebook, Twitter, etc. are mostly going to be looking for solid CS fundamentals in their interview. Unless you've taken a Data Structures & Algorithms class recently, you can forget working there.