> Is Amazon looking for a tech hub or a place for administrative functions.
"The jobs will likely be broken down into the following categories: executive/management, engineering with a preference for software development engineers (SDE), legal, accounting, and administrative." 
SDE is clearly mentioned but who know the actual distribution.
The RFP is rather more interesting than the marketing page:
The 2nd criterion is basically the total amount of sweet, sweet taxpayer dollars available to subsidize them:
Please provide a summary of total incentives offered for the Project by the state/province and local community. In this summary, please provide a brief description of the incentive item, the timing of incentive payment/realization, and a calculation of the incentive amount.