How Does One Start Contract Work?

 From: Reddit

I'm a Senior Engineer and have enough experience developing and shipping complete products. I keep reading about everyone suggesting contract work in these tough times and figured I can do this on my own.

I am confident in my skills, but how do I even begin to look for contract work? Is it just on websites like indeed/stackoverflow jobs, by selecting the "contract" filter?

It's all so vague, any personal experiences that you could share would help a lot!

EDIT: To the downvoter, thanks.

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