Spring BootNPCIJava
Payment File Processing System
NPCI integration with Digital Signature, Bank APIs, and Webhooks. Receives XML/TXT mandate files, processes through validation, parsing, AES encryption, and digital signature verification. 100% data integrity across high-volume batches with zero production incidents.
Spring BootAWSGovernment
Prakruti Parikshan
Ministry of Ayurveda, Govt. of India. Health-tech platform digitizing Ayurvedic body constitution assessments. Two-role system with configurable rule engine, RBAC, and AWS S3 storage. Covers all scoring logic for Vata, Pitta, Kapha types.
KafkaTwilioJenkins
Raincheck - Social Feed App
Social app with chat, feeds, and Kafka-powered scheduler. Messages produced at creation time and consumed at exact delivery timestamp. Twilio handles OTP across registration, login, and profile updates.
PayPalRBACSpring Security
CPA Document Portal
Three-role document platform (Admin, Sub-Admin, User). PayPal integration for payments, dynamic RBAC for real-time permission management, and webhooks for async payment confirmation.
StripeStripe ConnectQR Code
Uru Uru - Music Marketplace
Artist-first music marketplace with QR codes for each album/track. Stripe Connect handles artist onboarding and instant fund routing. S3 stores audio, album art, and profiles in separate buckets.
Spring AIOpenRouterLive
Pen & Page - AI Quotes Generator
Live at penspaper.in. Quotes generation app using OpenRouter API for multiple LLM models. Prompt engineering for quote style, length, and context control. Includes quote history feature.
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RAGSpring AILive
Document Talk - RAG-Based AI Chat
Live at talkswithdoc.in. Production-grade document chat system. Documents chunked, embedded, and stored in vector store. User queries matched against relevant chunks for context-aware responses.
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