I feel that perhaps I came across a bit harsher than I intended, so I'll try and clear this up.
On your website your job offers page states the following:
Marketing Manager - Worked (or Volunteered) as a marketing manager before.
Now I feel there may be a self-inflation of terms going on here, for example a marketing manager will either have a degree in marketing, an MBA, or about 6 years of experience; this would make him vastly over qualified to be working for free, in fact the only the marketers I know that come even close to working for free in fact simply work for no profit, which is different.
There's more problems with the idea of a marketing manager that is trying to market a project that has no budget, but discussing it would be long and ultimately pointless; you don't need a marketing manager - you need someone that can click the submit button on a Facebook post.
Money is a universal symbol of value, by giving it to someone you are acknowledging that they posses something of worth, be it experience, means or convenience. Asking a man to work for free is to ask him to (literally) devalue himself - and when value is removed from the equation, the remaining key motivators are obligation and passion. Obligation is built on time and value, as your studio is young and not offering payment, it's a weak path to consider, so the best bet is passion.
Passion is one of the strongest motivators for anything (and whilst I may sound a bit naive, I think the most successful), but to find those who will work for passion alone, and not money nor obligation limits your demographic considerably, the easiest target being young developers. Youth brings inexperience, which is important because experience creates both value and the expectation of the recognition of value (experienced people are unlikely to work for free) and financial security (very few young people have to worry about paying bills, so money is less of a priority), but most importantly passion.
The problem with passion is that it's laser focused. Young, passionate developers don't want make a game, they want to make their game; the game they lay awake a night thinking of and their days dreaming about. Convincing them to jump on your ship will be difficult...
...Unless you offer them something of value. If money's out of the window, target the passion, help them with their game if they help with yours; from there you get obligation. And that's how you get someone to work for you.
tl;dr: Drop the titles and pomp, don't portray yourself as a business; if you have to be anything be a think tank, seek out developers your own age.