Full-Stack Engineer for Platform Maintenance

I need a full-stack engineer to maintain and extend a live platform for property tax reduction. The platform includes a Python/FastAPI valuation engine and a React + TypeScript customer app, both hosted on Vercel. The engine outputs near real-time dollar values that must be correct, and uptime is critical. We rapidly deploy new geographies, features, enhancements, and bug fixes every week and need to ensure everything is still working, safe, and organized.