Depends on the field you're trying to enter: If the entire stack is open source based (most of devops that isn't Windows, for example), it certainly gives you

Depends on the field you're trying to enter: If the entire stack is open source based (most of devops that isn't Windows, for example), it certainly gives you lots more opportunities if you can show that you know what you're talking about, and if your name rings a bell with people in that space. For developing line of business java/.net applications (which is a _huge_ field) open source contributions don't matter on the resume and might even be a net negative.