Arjun Bhatia

About Arjun Bhatia

Machine Learning Engineer with expertise in LLMs, Reinforcement Learning, and AI-driven…

Experience

1. Machine Learning Engineer (Tech Lead)

   HCLTech

   Sep 2024 — Present · Noida, IN

   Reinforcement Learning Innovation: Reduced adverse clinical events by 45% in simulations by developing RL frameworks with DQN and DDPG, improving precision of dose in complex clinical scenarios.​ Hybrid Deep Learning Models: Achieved 87% prediction accuracy in anesthesia estimation with a hybrid Bidirectional LSTM, Convolution LSTM and static feature model.​ Multi-Agent Systems: Finetuned Llama-2 (LoRA/PEFT), developed optimized RAG ecosystem, and built multi-agent AI architectures (LangChain, LangGraph, Pinecone, GraphDBs).​ Scalable AI & Cloud Solutions: Designed and deployed cloud-native AI/ML pipelines on AWS (S3, EC2,SageMaker, Bedrock, Lambda) and GCP (Vertex AI, BigQuery), ensuring scalability.​ MLOps & CI/CD: Built robust CI/CD pipelines with automated workflows and Prometheus monitoring, streamlining deployments and model lifecycle management.