Markus Dreyer is a Principal Applied Scientist at Amazon, where he works on large language models, text generation, and multi-agent systems. He contributed to the Amazon Nova family of foundation models and led the development of Nova Deep Research. His research spans summarization, question answering, and natural language understanding, and he has published at venues including ACL, EMNLP, NAACL, and NeurIPS. He holds a Ph.D. in Computer Science from Johns Hopkins University.