Owned Pulsa & Data service roadmap and delivery across web surfaces; focused on performance and reliability.

• Owned Pulsa & Data service: roadmap, incident mitigation, and feature delivery
• Tuned caching to cut time‑to‑interactive on key flows
• Led SSR migration (Next.js/TypeScript) → ~3x faster average load time and lower bounce on low‑end devices

Delivered end‑to‑end feature updates for Pulsa & Data and collaborated with BE/QA to improve service load performance.

• Delivered feature updates across Pulsa & Data web flows
• Collaborated with BE/QA to improve service performance and reliability
• Redesigned Electricity service UI to simplify purchase flow and error handling
• Maintained Mini Program platform modules

Built analytics dashboards in React including tables, charts, and geospatial visualizations (Mapbox/Google Maps).

• Implemented BI platform surfacing Tableau/other sources in a unified interface
• Delivered dashboards for Telkomsel; collaborated with a distributed team (Poland)
• Implemented UI/UX designs with pixel‑perfect execution

• Built SSIS pipelines and automated ETL with Python/Task Scheduler
• Loaded data into Hadoop, PostgreSQL, and SQL Server