[pawelrychlik]

Surely possible, and proven to work at a small scale (less than 50ppl I would say). If you have people who are not afraid of leaving their comfort zone, who like to push forward, learn new things, inspire one another and are communicative, then it turns out that you can do a lot, including marketing, sales & HR even without specialists (one thing I find crucial is outsourcing the accounting, especially if you live in a beaurocratic country).

At rspective (http://www.rspective.com/#team) we are 11 people, _everybody_ is a software dev with strong technical background. E.g. we get lots of sale opportunities despite the fact that no-one in the team has any real experience with sales. We hire people by ourselves. We run marketing actions/campaigns. We are pragmatic, we figure out how to do things on our own. 2 years on the market and it works out perfectly for us so far.