🚀 Backend Engineer | Java & Kotlin | Fintech | AI (RAG) | Blockchain
- 💼 Software Development Engineer building scalable fintech systems
- ⚙️ Strong in Spring Boot, Kotlin, Microservices
- 💰 Worked on systems handling ₹10Cr+ monthly disbursals (per partner)
- 🔗 Built Lending integrations (Lendbox, TrillionLoan)
- 🪙 Developed Gold Investment (SIP, Buy/Sell, Payments)
- 🤖 Building RAG-based AI systems with Spring AI
- ⛓️ Exploring Blockchain, Smart Contracts, NFTs
🚀 Built a RAG-based chatbot using Spring Boot + Vector Search
✨ Features:
- Context-aware responses
- Custom knowledge base
- Scalable backend design
👉 Try it live: 🔗 https://santhosh-chat-bot.vercel.app/
Backend: Java, Kotlin, Spring Boot, Spring Security
Architecture: Microservices, REST APIs, Async Processing
Database: PostgreSQL, Redis
Security: OAuth2, RBAC, AOP Encryption
DevOps: Docker, AWS (Basics), Git
Integrations: Razorpay, Augmont, Lending APIs
AI: RAG, Vector DB, Spring AI
Blockchain: Solidity, Smart Contracts, NFT, DApps- 🔥 Built end-to-end lending integrations
- 💰 Enabled ₹10Cr+ monthly loan disbursals per partner
- 🪙 Designed Gold SIP + Payment system
- ⚡ Implemented idempotent architecture (Webhook + Polling)
- 🔄 Built retry system using SQS + async processing
- 🔐 Developed annotation-based encryption SDK (AOP)
- 🤖 Built RAG chatbot using Spring Boot
💡 You can:
- Show live dev news using GitHub Actions
- Feed this into your RAG chatbot
- Build a personal dev dashboard
- Context-aware chatbot using custom knowledge base
- Vector search + LLM integration
- Built using Spring Boot
- Upload → Mint → List → Buy NFTs
- Comment system on NFTs
- Solidity + Web3
- Annotation-based encryption/decryption
- Plug-and-play SDK
- AOP-based implementation
- 📊 System Design (Scalable Systems)
- 🧵 Concurrency & Distributed Systems
- 🧠 Advanced AI integrations
- 🏗️ Design Patterns (Deep Dive)
- 💼 Open to backend / AI opportunities
- 🤝 Always up for system design discussions
I build systems that move real money 💸, not just data.