
Spec-Driven Development and the Hidden 70% w/ Amazon's Director Developer Acceleration Steve Tarcza
In this episode of Shift AI, Steve Tarcza, leader of StoreGen at Amazon Stores, joins host Boaz Ashkenazy for a wide-ranging conversation on what it actually took to make Amazon's developer teams multiple times faster with AI. At the start of last year, Steve's team set a goal that sounded almost reckless: not a 10 or 20 percent improvement, but 3x. Steve admits he was skeptical it could be done at all. What his team found along the way, buried in an analysis of how developers actually spend their time, forced them to rethink the entire product development lifecycle rather than just handing engineers a faster tool. This one's for engineering leaders, VPs of product, and technical program managers wrestling with how to actually operationalize AI gains rather than just chase percentage-point productivity boosts. Chapters [00:01] Welcome and Steve's path to leading AI work at Amazon Stores [02:39] Steve's first job: fixing school networks in upstate New York [04:53] The 3x goal: betting on better models and rethinking developer work [07:05] Building "AI Teammate" for autonomous team workflows [08:22] Problem solvers, not code writers: staying customer-first [11:15] Junior vs. senior developers in an agent-heavy org [13:49] What models do well, and where they still fall short [16:17] Spec-driven development in action: the "Add to Delivery" button [18:31] Inside Kiro: Amazon's spec-driven development tool [21:01] Culture over tools: the harder half of going AI-native [24:18] Layoffs, job security, and why Steve stays optimistic [29:51] Beyond developers: PMs, DevOps, and the full product lifecycle [32:55] Closing two words: optimism and innovation Connect with Steve Tarcza LinkedIn: https://www.linkedin.com/in/steven-tarcza-ii-8b22936b/ Connect with Boaz Ashkenazy LinkedIn: https://www.linkedin.com/in/boazashkenazy/ Email: info@shiftai.fm



