perplexity - Internship - Search Machine Learning Engineer

• Contribute to experiments that improve search quality through better models, data usage, and evaluation tools, under the guidance of senior engineers. • Design and implement components of the search platform and model stack, including retrieval, ranking, and classification models. • Train evaluating models (including LLM-based approaches) for retrieval, ranking, and classification tasks. • Support deployment and monitoring of search and ranking models in a scalable and performant way. • Help build and iterate on RAG pipelines for grounding and answer generation. • Collaborate with Data, AI, Infrastructure and Product teams to deliver improvements quickly and learn best practices in production ML.