Senior FastAPI Backend Engineer for Observability & Reliability Review

Senior Backend Engineer / Technical Architect Needed to Review and Improve an AI SaaS Platform I am the founder of FACENTRA, an AI-powered event photo platform that allows guests to find their event photos using a selfie. The platform is already built and running in a Preview environment. I am NOT looking to build a new product from scratch. I am looking for a senior backend engineer / technical architect who can independently review the current system, identify architectural weaknesses, and recommend the best technical path forward. Current Technology * Python * FastAPI * PostgreSQL * Docker * Face Recognition / AI * REST APIs What I need * Review the existing backend architecture. * Review scalability and reliability. * Review performance bottlenecks. * Review observability and monitoring. * Review security and production readiness. * Review deployment strategy. * Recommend the best architecture for future growth. * Explain technical decisions in clear business language. Important I am NOT looking for someone who simply agrees with previous developers. I need an independent expert who can challenge assumptions, verify the architecture, and provide evidence-based recommendations. Preferred Skills * Python * FastAPI * PostgreSQL * Docker * AI Systems * Backend Architecture * High Scale Systems * System Design * Performance Optimization * Observability * DevOps To apply Please answer the following: 1. Tell me about a SaaS platform you reviewed or improved. 2. What would be the first things you inspect in my backend? 3. How do you usually identify scalability bottlenecks? 4. Have you worked with AI or face recognition platforms? 5. Why are you the right engineer for this project? Important: I am not looking for generic proposals. Please start your proposal with the word FACENTRA so I know you have read the entire job description. Generic AI-generated proposals will be ignored.