Dear new developer,
People always try to find someone they can trust. You can go through a series of interviews and hope that they will figure out you are a great colleague, or you can write about your approaches and let a wider audience know that.
If you have a deep expertise in some technology, you can demonstrate it by writing deep and thoughtful blog posts.
If this technology is in demand, you will definitely get some opportunities coming your way!
Your views expressed publicly can be a good conversation starter.
This may come handy in any professional social context: interviews, meetups, conferences. It’s a different level on conversation when you get approached because someone likes your views.
The author then goes on to talk about specific, measurable ways that his blogging has helped his career.
The whole post, “Is blogging useful?”, is worth a read.