<div class="show-more-less-html__markup show-more-less-html__markup--clamp-after-5 relative overflow-hidden"> Perplexity is seeking an experienced Machine Learning Engineer to help build the next generation of advanced search technologies, with a focus on retrieval and ranking.<br/><br/><strong>Responsibilities<br/><br/></strong><ul><li>Relentlessly push search quality forward—through models, data, tools, or any other leverage available</li><li>Architect and build core components of our search platform and model stack</li><li>Train and evaluate retrieval, ranking and classification models, including LLMs</li><li>Deploy models - from boosting to LLMs - in a scalable and performant way</li><li>Build and optimize RAG pipelines for grounding and answer generation</li><li>Collaborate with Data, AI, Infrastructure and Product teams to ensure fast and high quality delivery<br/><br/></li></ul><strong>Qualifications<br/><br/></strong><ul><li>Deep understanding of search and retrieval systems, including quality evaluation principles and metrics</li><li>Proven track record with large-scale search or recommender systems</li><li>Self-driven, with a strong sense of ownership and execution</li><li>Minimum of 5 years of working on search or recsys-related projects<br/><br/></li></ul> </div>