I already have the source for a React–based mobile front-end and a Python REST API that uses PostgreSQL. What’s blocking me from launch are three concrete pain-points I need closed out right away: • Payment integration errors – current flow fails at checkout; I need a clean, production-ready gateway hookup and test transactions running. • Server deployment errors – spin up the app servers, install/configure PostgreSQL, and deploy the code so both API and static assets serve reliably from my VPS. • General app functionality errors – a handful of glitches on both iOS and Android must be squashed so the apps pass store review. I’m looking for an India-based developer who can jump in ASAP, work within my overall budget of about ₹10,000, and hand back: 1. Fully working payment flow (gateway of your recommendation that fits Indian users, Razorpay or similar is fine). 2. Deployed, secured production server with proper process manager (Gunicorn/Uwsgi or equivalent) and Nginx/reverse-proxy in front. 3. Updated mobile builds uploaded to TestFlight and Internal Test track for final sign-off. Code access is on GitHub; server is an Ubuntu VPS; DNS and SSL are already arranged. Once everything is stable you’ll give me a short walkthrough of the deployment steps so I can reproduce them later. Speed is important—I’d like to see the first round of fixes live within a few days and the whole job wrapped up immediately after successful testing. Let me know your availability and how quickly you can start.