Detailed technical breakdowns exploring business problems, hard constraints, architectural choices, difficult problems solved, and verified production outcomes.
Why naive vector search fails in production, and how I built an enterprise RAG pipeline with semantic chunking, PostgreSQL pgvector HNSW indexing, cross-encoder reranking, and verbatim citation guardrails.
Low-power mobile geolocation engine with React Native native bridges and MongoDB 2dsphere indexing operating continuously under a 5% daily battery budget with zero process-termination drops.
Distributed Node.js and MySQL microservices on AWS with Redis hot caching and BullMQ idempotent webhook queueing maintaining 99.98% uptime SLA across 100,000+ active devices.
Zero-frame-drop fitness application with hardware-accurate interval timers, XMPP real-time chat, and full offline MMKV state persistence for iOS and Android.
Industrial field auditing PWA with client-side Web Worker image compression, Dexie IndexedDB schemas, two-way sync conflict engine, and MapLibre offline vector mapping.
Executive SaaS dashboard rendering 50,000+ data points smoothly with virtualized HTML5 canvas charting, asynchronous Python statistical workers, and real-time Slack alerts.
Compliance document warehousing ERP serving institutional giants like ICICI Bank, KFC, and Flipkart with AES-256 field encryption, OCR search indexing, and forensic audit logs.
Sub-1.2s tap-to-profile physical-to-digital business card ecosystem with zero required app installs, automatic vCard creation, and Razorpay payment webhook provisioning.
