Build responsive React (TypeScript) frontends (state mgmt, data viz, virtualized tables, forms, charts, file uploads, accessibility). Implement FastAPI services (async I/O, Pydantic v2, background jobs, caching) with robust testing. Design Elasticsearch models & queries Integrate AI features (streaming responses, structured outputs, eval hooks) to accelerate prototyping and user … drivers for rapid prototyping and refactors. React + TypeScript mastery: component design, hooks, performance, testing (Vitest/Jest, Playwright). FastAPI expertise: async patterns, Pydantic schemas, pagination, auth (OAuth2/OIDC), rate‐limits, background jobs. Elasticsearch fluency: mappings/analyzers (ngrams, synonyms), aggregations, filters, sorting, performance tuning. Cloud & DevOps : solid ...