Developer ​recommendat​ion?

Can any one recommend a good development company for getting a store website up and running? The company's gotta be decent size as scheduling is important... And preferably US based so that timezone isn't an issue.

Thanks guys

Only US based company I know is Avanade, as I used to work for them. But no idea if that is what you are looking for.

What technology are you aiming for?

@Minh: Have you considered any off-the-shelf products like these?:

http://vevocart.com/Default.aspx

http://www.nopcommerce.com/default.aspx

http://www.aspdotnetstorefront.com/

@Minh: 

Cactus? 
http://www.cactuscommerce.com/commercelive/Pages/Overview.aspx. 

Thanks guys. Maddus, I'm looking for an Amazon really lol... I'll look into your recommendations. I'm sure those products have service support... I mean, they'll have someone set it up for me right? I'm looking for a client, and no way I'd have time to do this myself.

@Minh: A lot of these guys have a completely hosted solution. You just give them money, and enter in products.