AI is pushing more code into delivery workflows, but review capacity is not moving at the same speed. The question is what teams need between a plausible diff and a merge decision: proof from the running app.

Callstack’s Michał Pierzchała, Principal Engineer and Piotr Miłkowski, Senior AI System Engineer will break down why code review still misses runtime behavior, why agentic code review remains too close to code, and why end-to-end suites often do not answer the exact question attached to a pull request.

They will also show what behavior review can look like in practice: a bounded QA agent that checks the flow touched by a PR, inspects the app at runtime, and returns evidence a reviewer can use. The session will stay grounded in real delivery work, with Agent Device presented as the infrastructure layer that gives the agent access to the running app.

You will leave with a clearer view of where this fits in an engineering workflow, what makes it trustworthy, and where to start if your team wants to test it without redesigning the whole QA stack.

What attendees will learn:

• why QA becomes the bottleneck when AI increases code output
• why code review and E2E tests still leave blind spots at runtime
• what a bounded QA agent should verify on each PR
• what makes behavior review reliable enough for production use
• how to build your first own agent for app behavior review on every PR