John Henry

Flutter Developer with 1.5+ years of experience building and deploying cross-platform mobile applications using Flutter, Dart, REST APIs, Firebase, and SQL.

Talent

ChennaiMember since October 1, 2026

DartFirebaseProviderBlocGetXGitREST APIsOTP AuthenticationPayU Payment GatewayUPI App RedirectionFirebase ServicesNavigationDebugging and Testing

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DartFirebaseProviderBlocGetX

About

Flutter Developer with 1.5+ years of experience building cross-platform mobile applications for Android and iOS using Flutter and Dart. Delivered 4 end-to-end Flutter applications independently, building responsive UIs and managing application state using Provider, Bloc, and GetX. Hands-on experience integrating Firebase services, REST APIs, UPI and PayU payment gateways, and OTP authentication into production applications.

Comfortable collaborating with cross-functional teams using Git, and consistently meeting delivery timelines without compromising quality. Successfully published the Tayani mobile application on the Google Play Store, actively used by live users.

Experience

Flutter Developer — Amorio Technologies Private Limited

April 2025 – August 2026

Worked as the sole Flutter Developer, responsible for end-to-end mobile application development, including UI implementation, API integration, testing, debugging, and deployment.

Developed and maintained multiple Flutter applications across FinTech, Healthcare, Employee Management, and E-commerce domains.
Wager – FinTech Payroll Platform: Developed Employee and Admin mobile modules covering attendance, check-in/out, leave management, permissions, timesheets, overtime, payslips, taxes, and payroll data.
Integrated REST APIs, handled JSON data parsing, validations, authentication, and dynamic backend data.
Genesis IVF – Healthcare App: Developed authentication, OTP login, treatment journey, appointments, medical records, lab/scan reports, prescriptions, education, wellness, and patient success-story modules.
Tayani – Healthcare App: Developed appointments, sessions, products, cart, checkout, and settings modules. Integrated PayU with UPI, cards, net banking, and wallet payment flows. App was released on the Google Play Store.
Welona – Employee & Customer Apps: Developed attendance, leave management, sessions, profile, and other business modules with REST API integration and PayU payment functionality.
Worked extensively with Flutter, Dart, REST APIs, JSON, Firebase, Git/GitHub, PayU, and UPI integrations.
Performed UI implementation, responsive design, debugging, validation, API testing, and functional testing across Android and iOS applications.