Pravin Kumar

Architected a scalable AI marketing intelligence platform using NestJS, TypeScript, Next.js, and PostgreSQL, implementing a reusable multi-model agentic architecture. Implemented LLM tracing and evaluation with LangSmith including token/cost tracking, idempotent execution, and failure recovery to improve workflow observability and reliability. Engineered a multimodal RAG pipeline using LangChain and pgvector with hybrid search and reranking, grounded citations, and human review controls (86% Recall@8) and optimized retrieval latency. Optimized LLM orchestration and streaming to reduce P95 time-to-first-token (3.1s to 2.4s) and lowered average cost per AI run by 14%.

Built an intelligent HS code recommendation tool using LLM embeddings and similarity search, reducing manual classification time by 80%. Developed and maintained backend services using NestJS, plus Python microservices for a customs clearance platform handling 1M+ declarations daily, ensuring reliability, security, and scalability. Led a team of 3 engineers from project initiation to production with ownership of project planning, architecture, CI/CD, server configuration, and load balancing; established code reviews and mentored junior developers. Delivered end-to-end backend features using Node.js (TypeScript), FastAPI, and MySQL, designing scalable microservices and core APIs for warehouse and parcel operations. Automated document processing with an OCR service extracting structured data from email attachments, reducing processing time by ~70%. Built real-time communication and search using Socket.IO, Firebase, TypeSense, and Redis with background workers and event-driven workflows f

Co-founded the company and led a team of 4–5 developers, owning technical architecture, hiring, code reviews, and delivery across client projects. Designed and delivered B2B and B2C applications across e-commerce, e-learning, accounting, and engineering domains using Django, Node.js, Angular 8, Next.js, and Flutter. Developed and shipped B2C and utility cross-platform Flutter apps (Android, iOS, Web) and successfully published multiple apps on Google Play Store and Apple App Store.