Language Model Scientist

Language Model ScientistWe're hiring a Language Model Scientist in Santa Clara, California, to join L&T's AI Center of Excellence. You'll build the generative and agentic AI systems that power knowledge, engineering and operations across the L&T Group, turning foundation-model capabilities into secure, reliable and domain-aware solutions: copilots, AI agents, enterprise knowledge systems and natural-language interfaces to engineering and physical systems.What you'll doFine-tune and align open-source and commercial LLMs (SFT, LoRA/PEFT, RLHF, DPO) for domain tasks such as engineering specifications, contracts, standards and code.Design agentic systems with tool use, planning, memory and multi-agent orchestration, plus RAG and knowledge-graph systems over enterprise data.Build evaluation, guardrail and red-teaming frameworks covering accuracy, hallucination, bias and safety.Deploy and scale LLMs in production (vLLM, TensorRT-LLM, quantization), with monitoring and inference cost optimization across cloud and on-premise.Partner with businesses in Engineering, Manufacturing, Infrastructure, Energy, Financial Services, IT Services and Defence to deliver high-value GenAI use cases.First 12 monthsEnterprise LLM and agentic AI reference architecture defined for the CoE.5–8 GenAI and agentic use cases delivered, at least 3 scaled to production.At least one domain-adapted language model developed.LLM evaluation, guardrail and LLMOps framework established.What we're looking forMaster's or PhD in Computer Science, AI, NLP, Computational Linguistics or a related field (PhD preferred).8–15 years in ML or NLP, including 3+ years of hands-on work with LLMs and Generative AI.A track record of building and deploying LLM applications in production at enterprise scale.Deep knowledge of transformer architectures, pre-training, fine-tuning and alignment.Strong Python with PyTorch, Hugging Face, DeepSpeed/FSDP and LLM frameworks such as LangChain, LlamaIndex or LangGraph.Experience with vector databases, knowledge graphs, Model Context Protocol (MCP) and function calling.Plus: engineering, industrial or regulated-domain experience, and publications at ACL, EMNLP, NAACL, NeurIPS, ICML or ICLR.Role details: Reports to the Head, AI Center of Excellence. Headcount: 3. Scope: L&T Group-wide, United States and India.Interested? Apply or send us a message with your profile. #LTGroup #AI #LLM #GenerativeAI #AgenticAI #Hiring #SantaClara