Jashan D.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Talented Mobile App Developer specializing in cross-platform application development with React Native, Expo, iOS, and Android. I have extensive experience building and maintaining mobile applications ranging from MVPs and single-screen apps to complex, scalable enterprise solutions. I have hands-on experience implementing Biometric Authentication (Face ID, Touch ID, fingerprint), secure authentication workflows, API integrations, and identity-related solutions, with a strong focus on security, performance, reliability, and user experience. I work closely with clients throughout the complete product lifecycle—from initial idea and business analysis to development, testing, deployment, and post-launch support. -Development Process -Idea Inception, Screening & Evaluation -Business Analysis -Wireframes & Prototypes -UI/UX Implementation -Agile Development -API & Third-Party Integrations -Testing & Quality Assurance -App Store / Play Store Deployment -Maintenance, Upgrades & Optimization -What You Can Expect -Reliable and proactive communication -Flexible availability across time zones -NDA-friendly and confidential development -Regular progress updates and stand-alone meetings -Strong understanding of Agile/Scrum methodologies -Clean, scalable, and maintainable code -Focus on security, performance, and long-term stability ⚙️ Core Expertise ::Mobile Development -React Native, Expo -iOS & Android -Redux Toolkit -React.js -React Native Firebase ::Authentication & Security -Face ID / Touch ID / Fingerprint Authentication -Biometric Authentication -Secure Login & Registration -Token-based Authentication -User Profiles & Account Management -Secure API & Identity Integrations ::Backend & APIs -Node.js, Next.js, TypeScript -REST APIs -WebRTC & VoIP -Google Maps API -HTTP, JSON, XML, SOAP -PHP ::Database -MongoDB -MySQL -SQLite -Core Data ::Payments & Subscriptions -Stripe -RevenueCat -In-app Purchases & Subscription Management ::Notifications & Device Features -Push & Local Notifications -Calendar -Alarms & Reminders -Background Services -Camera & Media Integration ::Social & Third-Party Integrations -Facebook -Instagram -Twitter/X -Firebase -Other third-party SDK and API integrations ::Development & Version Control -GitHub -Bitbucket -SVN -Source Code Management & CI/CD workflows Whether you need to build a new mobile application, integrate biometric authentication, connect secure APIs, fix an existing app, or enhance an enterprise product, I can help turn your requirements into a reliable, production-ready solution. Let's connect and bring your idea to life.