Evaluate Chinese multi-turn AI conversations for relevance, grounding, helpfulness, and personalization. Create scenarios, compare and rank responses, identify errors, and provide structured feedback following guidelines. Maintain data quality and use a personal Google account for evaluations.

Build native iOS apps focused on guided, camera-centric capture workflows using Swift and SwiftUI. Implement AVFoundation-based photo/video/document capture, offline-first syncing, robust uploads, media validation, and integrate backend APIs. Drive architecture, handle edge cases (permissions, interrupted sessions), and collaborate with Product, Design, and Platform teams.

Design and build production AI backend services, APIs, and data pipelines integrating LLMs and multimodal models; implement retrieval, context assembly, and grounded outputs; create evaluation and regression-testing frameworks; develop internal review tools and React operational UIs; ensure observability, monitoring, and scalable, cost-effective deployments. Own features end-to-end and collaborate with product and engineering stakeholders.