Seeking an experienced machine learning professional to lead the design, training, and deployment of multimodal foundation models (including LLM/VLM) for content safety tasks on a global platform. Responsibilities include developing scalable models for risk detection, enhancing zero-shot and few-shot generalization across languages and modalities, maintaining safety annotation frameworks, and collaborating with infrastructure and product teams to optimize training and deployment pipelines. The role requires strong expertise in large models, problem-solving skills, and a passion for research in NLP and CV areas. Preferred candidates have publications in top conferences and experience with multimodal models. The position offers a competitive salary, comprehensive benefits, and an inclusive work environment focused on innovation and impact.