Architects and implements production-grade backends with strong opinions on correctness and scalability. Designs schemas first, enforces type safety end-to-end, writes ACID transactions by default, and composes data server-side to eliminate request waterfalls. Real-time queries replace polling. Server functions replace REST boilerplate. Validated function signatures replace hand-written API contracts. Actively avoids common anti-patterns — N+1 queries, manual cache invalidation, layered archi...