Engineered a distributed, high-throughput notification infrastructure processing event-driven messages via Kafka and decoupled Worker Services.

• ▹Built a scalable notification microservice supporting multi-channel delivery (Email, SMS, Push, In-App) processing event-driven messages via Kafka.
• ▹Implemented intelligent provider failover and circuit breakers in the worker layer, automatically routing failed deliveries to fallback providers to ensure near 100% deliverability.
• ▹Designed a low-latency API proxy utilizing Upstash Redis for idempotency, request caching, and rate limiting to prevent downstream bottlenecks during high-traffic spikes.

A production-grade, highly scalable SaaS platform for shortening URLs and tracking link analytics with sub-100ms redirect latency.

• ▹Engineered a high-throughput URL shortener with sub-100ms redirect latency by implementing a Redis write-through caching strategy.
• ▹Implemented a distributed, Twitter-inspired Snowflake ID generator combined with Base62 encoding to generate unique, collision-resistant 5-character short codes capable of handling 4,096 URLs/millisecond.
• ▹Decoupled click-tracking logic from the critical redirect path by utilizing BullMQ background workers, ensuring asynchronous processing of GeoIP and User-Agent data.
• ▹Enforced API rate-limiting via a custom Token Bucket algorithm using Redis Lua scripts.

Built a C++ notification system with SMS, Email, and Push support using OOPS and design patterns

• ▹Designed a modular notification system supporting SMS, Email, and Push channels using the Strategy and Decorator patterns.
• ▹Applied SOLID principles to ensure extensibility and clean separation of concerns between sender and message interfaces.

Built a secure full-stack CMS and portfolio platform for a journalist to publish and manage stories

• ▹Engineered a cost-effective deployment strategy by adding a 30-second loop in the backend to keep the Render free-tier server warm, ensuring the CMS stays live without delays.
• ▹Delivered a robust CMS and portfolio system for a Kashmiri journalist, enabling seamless publishing and management of 30+ live articles.
• ▹Boosted SEO performance by 50% and improved page load speed by 40% through optimized rendering and media handling.

A highly scalable, asynchronous web service designed to process, download, and convert media formats (audio/video) from URLs in the background.

• ▹Built a highly concurrent media processing API using FastAPI, Python, and PostgreSQL.
• ▹Decoupled heavy compute tasks by segregating FastAPI web nodes from Celery worker nodes using Redis as a message broker.
• ▹Implemented real-time progress tracking by caching live download percentages directly in Redis, averting database contention.
• ▹Integrated AWS S3 / MinIO object storage for large file management, completely bypassing the application server via Pre-Signed URLs.
• ▹Configured robust worker failover strategies and deployed the containerized microservice stack using Docker Compose.