Senior AI/ML Engineer

2 days ago

Kolkata, India RingCentral Full time

Job Description:We are seeking an experienced AI Engineer with a strong background in Natural Language Understanding (NLU) who is passionate about pushing the boundaries of Conversational AI. In this role, you will design, develop, and deploy scalable AI solutions leveraging LLMs, Retrieval-Augmented Generation (RAG), and prompt engineering techniques to power intelligent products and services.As part of our ML/AI team, you’ll own the full lifecycle of model development — from data preparation and fine-tuning to inference optimization and deployment in production environments.Responsibilities:Design, fine-tune, and deploy LLM-based applications for Conversational AI use casesBuild scalable retrieval-augmented generation (RAG) pipelines that combine LLMs with structured/unstructured data sourcesDevelop prompt engineering strategies, templates, and evaluation frameworks for LLM-driven workflowsCollaborate with cross-functional teams to identify and implement AI-driven solutions to business problemsOptimize models for low-latency inference using quantization, distillation, and other model optimization techniques (e.g., ONNX, TensorRT)Build robust data processing, labeling, and augmentation pipelines to improve model performanceImplement monitoring and evaluation systems for deployed LLMs, ensuring reliability, fairness, and safetyStay current with emerging trends in LLMs, retrieval systems, and generative AI frameworksRequirements:5-8 years of hands-on experience in NLUStrong proficiency in Python and PyTorch and related frameworks (like Hugging Face Transformers, Sentence Transformers etc.)Proven experience developing and deploying NLP or LLM pipelines in production environments at scaleSolid understanding of transformer architectures and attention mechanismsProficiency in using LLM provider APIs such as OpenAI, Gemini etc.including prompt design, fine-tuning, and evaluationExperience with model optimization techniques such as quantization, pruning, ONNX, TensorRT, or model distillationBachelor’s or Master’s degree in Computer Science, Artificial Intelligence, or a related fieldNice to Have:Hands-on experience with RAG and vector databases (e.g., FAISS, Qdrant, pgVector etc. )Prior work on LLM fine-tuning, alignment, or evaluationExperience with LLM orchestration frameworks such as LlamaIndex or similar toolsFamiliarity with multi-provider LLM orchestration, integrating APIs from OpenAI, Gemini etc. and others for fallbacks, routing, or ensemble strategiesKnowledge of MLOps for LLMs, including model serving and monitoringUnderstanding of embedding models, context management, and token optimization for scalable LLM applications

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