Data Scientist - NLP/LLM/Generative AI

<p><p><b>About the job</b><br/><br/>LLM Data Scientist <br/><br/>(3-6 Years Experience)<br/><br/>Location : Gurgaon<br/><br/>GenAI Experience : Minimum 2 years required<br/><br/><b>Key Responsibilities : </b><br/><br/>- Develop and fine-tune LLMs for classification, NLP, and generative AI use cases<br/><br/></p><p>- Build RAG pipelines with vector databases and implement prompt engineering strategies<br/><br/></p><p>- Conduct data preprocessing for LLM training including tokenization and embedding generation<br/><br/></p><p>- Design custom chatbots, text generation, and document analysis solutions<br/><br/></p><p>- Implement LLM evaluation metrics (BLEU, ROUGE, perplexity) and human feedback loops<br/><br/></p><p>- Deploy conversational AI and content generation models in production<br/><br/><b>Technical Requirements : </b><br/><br/>- 2 years hands-on LLM development (GPT, BERT, T5, Llama, Claude)<br/><br/></p><p>- Proficient in Transformers, Hugging Face, LangChain, OpenAI API<br/><br/></p><p>- Experience with vector databases (Pinecone, Weaviate, ChromaDB) and semantic search<br/><br/></p><p>- Strong Python, SQL, and deep learning (PyTorch, TensorFlow)<br/><br/></p><p>- Knowledge of fine-tuning techniques (LoRA, QLoRA, PEFT) and model quantization<br/><br/></p><p>- Understanding of prompt engineering, chain-of-thought, and few-shot learning<br/><br/></p><p>- Familiarity with MLOps for LLMs (model versioning, A/B testing, monitoring) - GOOD TO HAVE</p><br/></p> (ref:hirist.tech)