• Orchestrated day-end processes in UAT and production environments, ensuring timely completion with a 99.5% accuracy rate.• Proactively troubleshot and resolved critical day-end issues, reducing downtime by 20% and safeguarding data integrity.• Collaborated with L2 support to streamline issue triage, accelerating resolution times by 15% and optimizing operational efficiency.• Rigorously tested and validated client requirements, guaranteeing successful deployments and minimizing post-implementation reworkby 30%.• Managed day-end executions for high-profile clients (RBC, BMO, PayPal, SMBC, American Express), ensuring adherence to strict SLAs.• Diagnosed and resolved complex issues within database and ETL processes, demonstrating database and data flow expertise.• Configured new services in ZENA and established Big Data connections, expanding system capabilities and enabling data-driven insights.

• Spearheaded cross-platform mobile app development (Android/iOS/Web), architecting solutions for scalability to a large user base, and supporting up to 60 students in live classes.• Integrated high-value features (in-app wallet, secure payments via Razorpay, video conferencing) and designed referral and commission systems to drive a network marketing model.• Engineered REST API communication between frontend and backend, ensuring seamless data flow and enabling real-time quiz/exam functionality for groups.• Managed Firebase integration and Cloud Firestore, providing secure and reliable data persistence for sensitive user and payment information.• Led the modernization effort by porting legacy code to Flutter 3, improving maintainability and cross-platform compatibility.• Developed comprehensive course creation tools, streamlining content development and management for educators.

• Refactored Flutter UI components, resulting in a 20% decrease in screen rendering times.• Engineered a scalable quiz engine supporting multiple programming languages.• Leveraged JSON parsing for efficient local data management.• Implemented robust user authentication and authorization with Firebase, ensuring a seamless login experience and protecting user data.• Optimized application performance, leading to a 30% improvement in responsiveness.• Expanded the JSON database to accommodate a wider variety of quiz questions, increasing content offerings by 50%.• Facilitated multi-language quiz functionality (C, C++, Python, Java), enhancing user choice and flexibility.