Interview Steve Tarcza, director of Amazon Stores, says his team — StoreGen — exists to help the retail giant's developers move faster and cut friction. But despite the AI mandate, one principle is non-negotiable: nothing ships without a human checking it first. We can't get to the point where we don't have more junior engineers coming in. We have to continue to grow the talent. We can't end up in a spot where there are not folks to maintain these systems ... The unit focuses not on AWS customers, but on Amazon's internal development teams for its mammoth retail site and operations. Tarcza spoke to us at the AWS London Summit last week, we met him immediately following the keynote at which Alison Kay, VP and managing director UK and Ireland, told attendees that AI technology feels "like magic." Kay cited as an example how the inference engine behind Bedrock, a generative AI service, was rebuilt in 76 days by six engineers, thanks to using the Kiro agentic coding service.…