Gourav Vaidya
I'm Gourav Vaidya, a Senior Mobile Full-Stack Engineer based in Tallinn, Estonia. I design and ship secure, scalable software for fintech, Web3, and IoT, blending native mobile apps with robust backend services.
About
I’m Gourav Vaidya, a Senior Mobile Full-Stack Engineer based in Tallinn, Estonia. I design and ship secure, scalable software for fintech, Web3, and IoT, blending native mobile apps with robust backend services. I enjoy turning complex requirements into maintainable architectures and helping teams deliver value quickly while maintaining quality.
Over the past decade, I’ve led teams from 1 to 8 engineers, steered platform migrations serving millions of users, and built crypto/fiat payments, wallets, and blockchain integrations. My sweet spot is delivering end-to-end solutions—from Flutter and React Native mobile clients to Node.js backends, payment integrations, and Web3 components—while prioritizing security, performance, and a great developer experience.
- 15 years' experience
- Joined March 2026
Industry experience
- Financial Services
- Software & Internet
- Retail
- Transportation & Logistics
- Professional Services
Work experience· 7 roles
Built the Flutter-based Cashier package end-to-end, enabling deposits, withdrawals, and crypto purchases across fiat and major cryptocurrencies. Integrated direct blockchain transactions and global payment providers (Binance, HiBT, Meld), broadening payment access for a worldwide user base. Launched Vault — in-house secure wallet with 2FA and multi-currency storage. Implemented Bitcoin Lightning Network support for near-instant deposits. Delivered WalletConnect and Mesh Connect integrations for Web3 wallet transactions. Built a React admin app for dynamic feature management, A/B testing, and metric-based visibility controls.
Reduced average transaction costs by 40% and built consumer delivery apps in React Native, boosting engagement and retention. Developed Node.js backend services for the Marketplace platform, powering merchant catalog, ordering, and fulfillment workflows at scale. Built and maintained backend APIs (Node.js/Express/PostgreSQL) for the Delivery-as-a-Service platform, enabling third-party integrations and autonomous delivery operations. Improved CI/CD pipeline efficiency via CircleCI, cutting build and deployment times. Created the internal React admin panel for merchant onboarding and payment ecosystem management. Implemented end-to-end testing with Detox, significantly reducing production bugs.
Architected India’s second-largest mobile banking super app for Kotak Mahindra Bank (React Native). Designed a digital Customer Onboarding product that streamlined account opening for enterprise banking clients. Directed the Mobile CoE, defining best practices, tooling, and architecture standards across projects for YES Bank, MGM, and others.
Education
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