https://www.cathycai.org/sauce-slice daily 0.75 2025-08-19 https://images.squarespace-cdn.com/content/v1/65fb4adb2ee0272566e6323e/138182ba-1048-4207-a558-bb9d427e81b1/BreeLewis-SauceSliceInscreen-3.jpg https://images.squarespace-cdn.com/content/v1/65fb4adb2ee0272566e6323e/ad399634-6e3c-4b59-82c6-1024ac7eb3f8/Adri-SauceSlice-Inscreen-1.png https://images.squarespace-cdn.com/content/v1/65fb4adb2ee0272566e6323e/daee1ffd-5087-476a-be74-08c56f01c6a6/BreeLewis-SauceSlice-Logo.png https://www.cathycai.org/haven-ai daily 0.75 2025-08-29 https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/26fc8bbb-85ec-487b-b712-541885a11cd5/Heading.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/cb9433e4-6362-4edf-9e38-e66a90e5290d/25.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/11a433ec-d1f1-4000-9f51-cb7496f935bc/24.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/1092da63-2058-46ee-8fc4-b9def18efdfa/26.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/032df230-fbf8-47e3-ab5f-e4007cc458a7/22.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/fbc7f94a-cf54-4798-9959-849dd9cb1029/23.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/9b4c0ce9-9857-41ec-b299-f327a2312534/User_Persona_Jamie_Lewis.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/e544a508-4462-449d-a4d0-703ea5fd4581/Journey+Map+Jamie.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/151535b4-edff-4901-a1af-cc836ced7ea9/B2B_Buyer_Persona_Emily_Reynolds.png https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/b8f70aa0-e51c-4f3b-a866-bceac41ba130/0277fa_0fd2de88084f436e90b5ded2b3affb16%7Emv2.png.jpeg https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/3d0c9172-1746-4ce6-a3e9-4d41b4c9bb26/HAVEN-AI-Full-Architecture.jpg https://images.squarespace-cdn.com/content/v1/68a4d7e5b70d512ee7347863/55aa0782-55c6-450c-a334-4530795704a0/haven+arch.jpg Haven. AI - Tech Stack To power Haven.AI, we built a cross-platform mobile app in React Native that lets users log cravings, chat with the AI, and receive proactive check-ins through a simple, intuitive interface. Authentication & Security User accounts are protected with Firebase Authentication, enabling secure Google sign-in and issuing JWTs that are verified by the backend. Backend & Infrastructure Our backend, developed in FastAPI and deployed on Render, manages API endpoints, orchestrates GPT-4 interactions, and handles all business logic. User profiles, craving logs, chat history, and behavioral triggers are stored securely in MongoDB Atlas. Scalability & Modularity The modular architecture allows us to deliver real-time, adaptive support while ensuring performance and data privacy at scale. Collaboration & Design I led a cross-functional team of engineers working in GitHub with a branch-based workflow for feature development and integration testing. 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