Full-Stack Fintech App Build -- 2

I’m preparing to launch a fintech mobile app that must run smoothly on both iOS and Android. I have the core product concept, wireframes, and a shortlist of third-party financial APIs, but I now need a... (Budget: ₹12500 - ₹37500 INR, Jobs: Android App Development, API Integration, Cloud Computing, FinTech, Full Stack Development, iOS Development, Mobile App Development, Payment Gateway Integration)