Hirenkumar P.

🚀 I help startups and enterprises build scalable backend systems and AI-powered solutions using Java, Spring Boot, and LLM frameworks like LangChain, OpenAI, and Pinecone. With 20+ years of experience in backend development and recent focus on GenAI, I specialize in designing intelligent APIs, secure microservices, and RAG-based architectures that deliver real business value. ✅ What I Deliver: 🔧 Robust Java Spring Boot microservices 🔐 Secure OAuth2 login flows (Google, Slack, etc.) 🧠 AI chatbots & RAG pipelines using OpenAI, LangChain, Pinecone 📁 Document search + vector DB (FAISS / pgvector / Pinecone) 🛠️ Containerized apps with Docker, CI/CD, OpenTelemetry 💡 Recent Projects: 📄 Built a Google Drive-connected chatbot for document Q&A (LangChain + RAG + Pinecone) 🏥 Integrated AI scoring into a healthtech backend for personalized risk insights 💸 Migrated legacy fintech backend to Spring Boot microservices + Redis caching Let’s discuss how I can help you build AI-native applications, modernize legacy systems, or launch your next GenAI product.