I am not a recruiter but help with software/firmware interviews where I work. When interviewing someone, any and all signals are very useful. For someone fresh out of university, they can show me their student projects. But an experienced engineer, their contributions are usually property of their previous employer and can't be shown.<p>To me, being able to see an interviewee's code is like being able to see an artist's portfolio. Alternatively, if an interviewee can point to mailing lists, code repos, etc, for open source contributions, that also is very valuable.<p>Some other folks in the comments are saying they use Github, etc, as a dumping ground for projects. Still valuable. In my opinion, that means you're interested enough in the project to at least save the code. Plus, even quick and dirty code can have valuable information. Does this person understand, for example, the common idioms in C, C++, Python, etc? (Specific example, using malloc/free/printf correctly, new[]/delete[], not using for i in range(len(foo)). Simple stuff like that.)<p>Note a repo containing "this is code where I'm learning this language, this library, etc" won't have the best use of the language, obviously, but will be a good sign this person is learning something new. It's another signal.<p>Just my opinion.