Role: Android Developer Location: Berkeley, NJ (Onsite) Type: Contract Experience level 7+ years JD: Develop and maintain high-quality Android applications for payments and financial services.Collaborate with product managers, designers, and backend engineers to deliver secure, scalable solutions.Integrate payment gateways, UPI, card networks, wallets, and third-party SDKs with robust error handling.Implement application security: Android Keystore, encryption, authentication/authorization, root