See this page on the site
(According to it, you can send your CV at darbs[at]mikrotik.com; Of course whether they'll actually hire you is a whole other question.)
Just out of curiosity, what DO you want to implement? Anything high on your bucket list? Or in other words, what will be the first item you'd pitch to upper management for approval (as I'm sure they won't let just "anything" fly, but they'd be opened to suggestions...)?