VARUN VARIER

Developed data visualization dashboard product for enterprise and government clients to facilitate interactive data exploration, enhancing data exploration efficiency by 30%.

Major highlights include:

• Developed an interactive slicer system that supports multiple data types and improves how users explore and filter large datasets, improving user filter and drill-down speed by upto 40%.
• Developed hierarchical slicers up to 5 levels deep non-aggregate fields for complex data analysis, reducing navigation time by 25%.
• Designed a range slider for aggregate values and a relative datetime slicer for date/time/datetime based filtering, ensuring smooth interaction with various data types.
• Supported both page-level and full-dashboard filtering, giving users flexible control over data views.
• Developed a KPI visualization with customizable goals, thresholds, and trend indicators that improved key performance metrics tracking accuracy by 20%.

Technologies used: Angular, D3.js, NGRX, RXJS, REST API, GraphQL, Websockets.

• Led the frontend migration of a government bank’s UI, transitioning from JavaScript/jQuery to React, which boosted maintainability and reduced load time by 35%, improving overall application responsiveness.
• Refactored legacy UI components into modular, reusable parts, improving developer productivity by 40% and shortening feature delivery timelines by around 20%.
• Optimized page load times and implemented state management best practices, enhancing user experience ratings by 15% and reducing client‑reported UI issues by about 12%.
• Collaborated with backend teams to refine API integrations, resulting in 20% faster data fetch times.
• Improved accessibility compliance and ensured cross‑browser compatibility, contributing to better feedback from a wider range of users.

Technologies used: React, Redux Toolkit, REST API, Node.Js, PostgreSQL.