Vijayakumar Alagappan

Bishop Heber College

Bachelor of Commerce · Commerce

June 1, 2019 – May 1, 2022

Softspark Integrated Transformation Pvt Ltd.

Full Stack Developer

March 1, 2024 – Present

Tiruchirappalli, Tamil Nadu, India

SparkFin Budget Application

February 1, 2025 – Present

Built a cross-platform personal finance application using React Native (Expo), Node.js, Express, and MongoDB, enabling real-time income, expense, savings, and budget tracking. Architected a scalable data model and analytics layer, using optimized indexing and aggregation pipelines to support high-performance financial reporting. Developed advanced dashboards and custom reports, including budget vs. actual analysis, pivot-style reporting, time-based filtering, and interactive visualizations. Implemented secure authentication and monetization workflows, integrating JWT, MFA (Email, OTP, Google, Apple, Facebook), in-app purchases, feature gating, push notifications, deep linking, and mobile performance optimizations.

SparkSinger Karaoke Application

March 1, 2024 – January 1, 2025

Developed the core singing post feature using an optimized HTML5 audio/video player, leveraging native media tags, autoplay, and route-based data handling. Implemented real-time notifications with WebSockets, using a global Socket Context Provider on the frontend and backend event handling. Built dynamic, shareable user profiles and posts with route parameters, deep linking, and metadata previews, improving content discovery and sharing. Improved performance, scalability, and stability by creating reusable and memoized components, implementing frontend-backend synchronized pagination, and securing the app with multi-factor authentication and React Error Boundaries.