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Software Engineer with 5+ years of experience building scalable, production-grade Flutter applications across fintech, stock trading, and consumer platforms. Most recently, I architected features on a live cross-border payments platform handling $25B+ in global transaction volume across 190+ countries and 48+ currencies. I specialize in BLoC architecture (with working familiarity in Provider), clean architecture, and dependency injection to build maintainable, testable code. I also develop and maintain backend services in Node.js and MongoDB, with strong experience in offline data handling, API synchronization, and resolving data consistency challenges.…Software Engineer with 5+ years of experience building scalable, production-grade Flutter applications across fintech, stock trading, and consumer platforms. Most recently, I architected features on a live cross-border payments platform handling $25B+ in global transaction volume across 190+ countries and 48+ currencies. I specialize in BLoC architecture (with working familiarity in Provider), clean architecture, and dependency injection to build maintainable, testable code. I also develop and maintain backend services in Node.js and MongoDB, with strong experience in offline data handling, API synchronization, and resolving data consistency challenges.

Onkar Kulkarni

Software Engineer, Full Stack Developer, Back-End Developer, +2

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Software Engineer with 5+ years of experience building scalable, production-grade Flutter applications across fintech, stock trading, and consumer platforms. Most recently, I architected features on a live cross-border payments platform handling $25B+ in global transaction volume across 190+ countries and 48+ currencies. I specialize in BLoC architecture (with working familiarity in Provider), clean architecture, and dependency injection to build maintainable, testable code. I also develop and maintain backend services in Node.js and MongoDB, with strong experience in offline data handling, API synchronization, and resolving data consistency challenges.…Software Engineer with 5+ years of experience building scalable, production-grade Flutter applications across fintech, stock trading, and consumer platforms. Most recently, I architected features on a live cross-border payments platform handling $25B+ in global transaction volume across 190+ countries and 48+ currencies. I specialize in BLoC architecture (with working familiarity in Provider), clean architecture, and dependency injection to build maintainable, testable code. I also develop and maintain backend services in Node.js and MongoDB, with strong experience in offline data handling, API synchronization, and resolving data consistency challenges.

Available to hire

Software Engineer with 5+ years of experience building scalable, production-grade Flutter applications across fintech, stock trading, and consumer platforms. Most recently, I architected features on a live cross-border payments platform handling $25B+ in global transaction volume across 190+ countries and 48+ currencies.

I specialize in BLoC architecture (with working familiarity in Provider), clean architecture, and dependency injection to build maintainable, testable code. I also develop and maintain backend services in Node.js and MongoDB, with strong experience in offline data handling, API synchronization, and resolving data consistency challenges.

Skills

Flutter

MongoDB

Node.js

Experience Level

Flutter

Expert

MongoDB

Expert

Node.js

Expert

Work Experience

Software Engineer at Verto (Cross-Border Payments)

March 1, 2024 - July 31, 2026

Architected and built Flutter features using BLoC, Clean Architecture, and dependency injection (GetIt, Injectable) following SOLID principles for a cross-border payments remittance app used by thousands of active users. Contributed to a live platform processing $25B+ global transaction volume across 190+ countries and 48+ currencies. Led app-wide GoRouter migration and navigation/deep-linking updates, and performed Flutter/Gradle upgrades across the codebase with zero regressions. Developed production Node.js REST APIs and MongoDB services. Automated CI/CD pipelines with GitHub Actions, integrated Sentry, and reduced release cycle time to under 30 minutes. Implemented end-to-end stablecoin payment flows (onboarding, beneficiary management, inbound payments, and Asia corridor support) and security workflows (roles/permissions, QR login, payment approvals). Delivered scheduled/recurring payments with currency statement generation and took exchange-rate widgets from POC to production fo

Software Developer at Greeksoft Technologies

February 1, 2023 - March 31, 2024

Delivered cross-platform mobile applications for Play Store and App Store using Riverpod and MobX for state management with offline-first storage via ObjectBox. Implemented REST API integrations, payment gateway functionality, and real-time features using WebSockets and reactive Dart streams. Integrated Firebase services including Auth, Database, and Messaging. Built responsive Flutter UI and supported Flutter web deployment.

Flutter Developer at Mplussoft Technologies

September 1, 2021 - January 31, 2023

Developed cross-platform mobile applications end-to-end from UI to deployment in collaboration with backend and design teams. Integrated REST APIs and implemented state management for Android and iOS production apps. Wrote unit tests, used Git for version control, and optimized performance across device sizes and OS versions.