1Like anything, it's not a yes/no question. It's not for employers either - for them many CVs look quite alright. For example while at Cisco I got to eye a few CVs and my thoughts were 'they're all great' and didn't want to say yes/no to anyone in particular 😬
I believe that everything counts, and the more things that you have to 'count', the better!
Some quick examples: Java, concurrency (the JCIP book is amazing, you can see 
holding it in a talk), having some OSS projects and contributions, authoring blog posts. And so on.
No employer ever says "oh he doesn't have blog posts, guess it's a deal breaker" but, it's stuff that holistically (subconsciously?) does matter. In the end, it's about conveying certain feelings - enthusiasm, professionalism, etc. Many people really want/need to be excited for candidate - facts are just a proxy for those feelings.
We live in a competitive world. Even more so in the Clojure ecosystem, which is relatively small and full of amazing, experienced people.
It took me a while to feel at ease here, I had to work my way quite hard in the beginning. Nowadays I definitely can navigate much more comfortably. You might want to think of this as a one-off big investment.
Hope it helps!
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