Title: Senior Python/AI Engineer (OpenAI + JSON/Pydantic) to productionise HR Apps (Streamlit) Overview: PowerDash HR is launching a suite of AI HR Apps (JD/adverts/interview guides/policies). We need a specialist to make outputs consistent, structured, and premium. The current code works but the AI/JSON layer is brittle. Your mission: refactor prompts + validation + parsing so every output is clean, repeatable, and export-ready (DOCX/PDF). Core must-haves: Python 3.11+; Streamlit OpenAI structured prompting; JSON-first responses Pydantic schemas + robust validation/repair Error handling, retries, fallbacks, logging Clean architecture & modularisation for white-labelling (branding swap in minutes) Deliverables (1–2 weeks max scope): Unified AI service with JSON-only responses (no free text) Pydantic models per artifact (JD, Advert, Interview Guide, Policy) Deterministic formatting + docx/pdf exports (no broken bullets/spacing) Config-driven branding (logos, colours, house style) Test suite + sample inputs/outputs + README Light refactor for maintainability (no rewrites) Budget: £400 fixed (bonus for ahead-of-schedule + polish). How to apply (no long cover letter): 3–5 bullet points on relevant projects Short note on your approach to “JSON-only LLM outputs + post-validation” Your availability this week