Senior ML Research Engineer - Search & Retrieval

Perplexity is seeking an experienced Machine Learning Research Engineer to advance the next generation of search technologies, with a focus on retrieval and ranking. You will design, train, and optimize large-scale models using PyTorch, employ distributed training with DeepSpeed/FSDP, and build core components of the search platform. Collaborate with Data, Infrastructure, and Product teams to ensure fast, high-quality delivery and progress in representation learning for multilingual and