[rtperson]

> We could not test the application because we were told about it on tuesday and it had to be ready on sunday.

Well there's your problem right there. That is not an appropriate timeframe for a new app. The only professional response to such a request is: "It cannot be done. Not if you want this app to work in production. Here's why." Follow up with an explanation of why QA and load testing are crucial. If they press you, make your next follow-up a letter of resignation.

[haasted]

Also, if you accept the timeframe, go with only known technology. This is not a scenario for getting experience in a new platforms.