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Onkar KulkarniOK
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Onkar Kulkarni

@onkarkulkarni2

I build production Flutter payment, trading, and mobile platforms.

India
Message

I've built production Flutter applications for Verto's cross-border payments platform, supporting $25B+ in global transaction volume across 190+ countries and 48+ currencies. I delivered stablecoin payments, recurring payments, secure approval workflows, wallet experiences, and exchange-rate widgets for Android and iOS.

At Verto, I architected maintainable applications with BLoC, Clean Architecture, dependency injection, and SOLID principles. I also developed Node.js REST APIs and MongoDB services, migrated app-wide navigation to GoRouter, and reduced release time to under 30 minutes through GitHub Actions, Sentry, and streamlined QA distribution.

Previously at Greeksoft Technologies, I shipped a trading and broking platform used by 250+ institutional financial firms from a single Flutter codebase. I built real-time WebSocket market data, reduced order and transaction failures by about 15%, and cut screen load times by about 40% with offline-first ObjectBox caching.

I've also delivered four production applications from scratch as the sole mobile developer at Mplussoft Technologies. I use GitHub Copilot, Cursor AI, and Claude for feature delivery, refactoring, testing, and code review.

Experience

Work history, roles, and key accomplishments

GT

Software Developer

Greeksoft Technologies

Feb 2023 - Mar 2024 (1 year 1 month)

Built a trading and broking platform for 250+ institutional firms using Flutter. Engineered real-time market data streaming and reduced order failures by ~15% with resilient error handling.

MT

Flutter Developer

Mplussoft Technologies

Sep 2021 - Jan 2023 (1 year 4 months)

Delivered 4 production applications from scratch as the sole mobile developer. Built a reusable widget library and integrated REST APIs with state management for Android and iOS.

Education

Degrees, certifications, and relevant coursework

MT

Marathwada Mitra Mandal's Institute of Technology

Bachelor of Engineering, Computer Engineering

2020 - 2023

Grade: 8.4 CGPA

Bachelor of Engineering in Computer Engineering with a CGPA of 8.4.

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