Riel says,

I worked with Ivan at Alfacom. He reviewed the project. We talked about it via Skype. He was interested in understanding in detail the problem I wanted to solve so he could approach it correctly. I recommend him as a problem-solver and developer.

for Ranking Algorithm Design on May 20, 2010

john_smith89 says,

very fast and always gives you what you need

for Teleportation Game on Dec 12, 2009

john_smith89 says,

very nicely done

for Teleportation Game on Nov 23, 2009

john_smith89 says,

very fast and nicely done always very nice!!

for Teleportation Game on Nov 09, 2009