Developed a unified social messaging inbox integrating Facebook, Instagram, and X APIs, processing 100,000+ messages per month with reliable conversation threading and message sync.

Built real-time messaging APIs with conversation history, attachments/media handling, and pagination, reducing sync latency by 30% and improving UX consistency across channels.

Optimized analytics and search workflows on 150M+ rows and 20GB+ datasets using DuckDB/Parquet, reducing query latency by 70% and lowering server costs by 20%.

Built high-throughput REST APIs for filtering and search, plus cron-based automation for cleanup, notifications, and access logging, improving API response times by 2x.

Developed React Native Android features including onboarding and authentication (Firebase), location-based discovery (Maps + geolocation), and category/mood-based filtering.

Implemented ticketing and booking flows with checkout redirects and booking state management, plus QR-code based ticket display/scanning for entry validation.