Senior Full Stack AI/Postgres/n8n/LLM/Meta tagging schema

A) Storefront & Search UI (React/Next.js + Shopify)

• Build PDP/collections and the “Ask Parts” widget consuming ES/RAG APIs; emit JSON-LD, sitemaps, UTM-aware links.
• Define and surface metafields/metaobjects (fitment, manuals, related media); app proxy to backend services.
• AI in this lane: integrate semantic results, citations, and suggestion chips; A/B prompts and track retrieval quality.

B) Backend & Data Platform (APIs/ES/Postgres/S3)

• Own schemas, migrations, ETL; ES index templates & ingest pipelines; search endpoints; presigned media URLs.
• Operate n8n flows; QC dashboards; retries/DLQs; enforce metadata validation at ingest and propagation to Shopify.
• AI in this lane: embedding generation/orchestration, prompt-safe RAG endpoints with guardrails, offline relevance evaluation.

C) AI/RAG & Media (NLP/CV/Embeddings)

• Transcribe/segment media, generate embeddings, tag assets (CLIP/YOLO), dedupe (phash); maintain confidence gates.
• Produce video/image/product sitemaps; prove indexing via Search Console telemetry and fix coverage issues.
• AI in this lane: model selection/tuning, chunking strategies, evaluation sets, and continuous quality monitoring.