• Tech Planning, Design & Implementation for Product Archival Service,which aims to improve listing of higher quality products on the Tokopedia website & app, as well as cost reduction by archiving stale/ low performing products fulfilling certain conditions.• With this service ~2.5 Billion products ( 30% of total products ) archived till now, saving IDR 600 Million Monthly• Executed automated one time archival scripts which archived~850 Million product till now, saving IDR 200 Million Monthly• Improvement done at multiple dependent services to handle archival using bulk queries which increased archival speed at 25x with the same infrastructure• Migrated from Monolith to new Microservice Product Aggregator, which aims to serve the core Product data aggregated from various upstream services along with handling business logic, based on the client requests.• As of now 3 gRPC endpoints have been migrated serving an average RPS of ~30K, while achieving an improvement in p95 latency from ~45ms to ~21ms, and success rate of ~99.96%.

• Implementation of Product Bundling, which aims to provide a promotional tool for sellers to enable them to add multiple products and sell them as a bundle. This has increased the ABS(Average Basket Size) on Products using bundle by 1.5x.

• Truepush is a cross-platform pushnotification service for websites, iOS and Android, offering segmentation, RSS to Push, Triggers, templates and detailed campaign analytics.• Developed push notification service for sending 40M+ notification daily, worked on query tuning to fix scaling issues• Worked on automation of sub domain provision to each client using nginx wildcard

• Geo Famous is a location-based social network connecting people whoshare common places and allowing them to share memories.• Designed and developed Posts, comments, Trending section,Messagingservice and Advanced search

• FeelOh is a social networking connecting people based on bloodrelations. It allows users to react based on their feelings.• Designed & implemented Posts, Comments, Messaging service,Notifications