Developer builds AI-powered visa document tracker using Django, Aurora PostgreSQL, and React

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A developer created VisaTrack, an AI-powered visa document tracking app, as an entry for the H0 Hack the Zero Stack hackathon hosted by Vercel and AWS. The application uses Google Gemini 2.5 Flash to auto-generate country-specific document checklists, while users can upload files and consult an AI advisor for application guidance. The stack combines a React and TypeScript frontend hosted on Vercel with a Django REST backend on Railway, backed by Amazon Aurora PostgreSQL Serverless v2 on AWS. Aurora PostgreSQL was chosen over DynamoDB and Aurora DSQL due to full compatibility with Django's ORM, migrations, and admin tools. The most significant technical challenge was implementing IAM-based database authentication, which required a custom Django database backend that generates short-lived tokens via boto3 on every connection request.

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