The Facebook iPhone application was a one-man job. Joe Hewitt joined Facebook when the company he co-founded with Blake Ross, Parakey, was acquired last month. He quickly got to work on the company’s iPhone app, which was released just a month after he joined the company.

Hewitt has been one of the key figures in figuring out some of the hacks around iPhone applications – dealing with no keyboard, the flip screen, etc. He has been a major contributor to the iPhone discussion group at Google and released his own framework and sample code, called iUI, that dozens of other developers have integrated into their own apps.

Nik Cubrilovic and I spoke with Hewitt for 26 minutes late last week to get his thoughts on the challenges and opportunities around iPhone web application development. Hewitt also talks about some of the features he’s like to see to make the iPhone an even better user experience.

Download it at TalkCrunch or listen to it in the audio player below.

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Update: Robert Scoble has a good video interview with Hewitt as well.