Shopify describes rebuilding its app natively with about 30 engineers working in pairs, each pair owning one product area on both platforms. Each engineer directed several coding agents, and agents did the first review against written architecture guidelines before humans made the final call. Daily review comments were fed back into the guidelines, and one pull request covered both platforms. Leads could borrow the ownership by area and the review feedback loop, though the team and the scope are larger than a typical squad.
