Scalable GPS Tracking Platform

I need a complete, in-house GPS tracking solution that can comfortably serve well over 50,000 vehicles without relying on the off-the-shelf Chinese systems we currently use. The project covers three client... (Budget: ₹150000 - ₹250000 INR, Jobs: Android, API, Cloud Computing, iPhone, Microservices, Mobile App Development, PHP, Web Development)