The Microsoft CoreAI Modeling team develops advanced AI technologies that integrate language and multi-modality for various Microsoft products. We built models for internal and external applications, focusing on post-training OpenAI models, OSS models through large-scale continual pre-training, and RL, as well as code-specific models such as SWE.  

We are seeking a Principal Researcher - CoreAI with expertise and experience in large-scale modeling training and data curation. You will work on LLMs, SLMs, multimodal systems, and coding models using proprietary and open-source frameworks.

This will include managing the full model pipeline from dataset ingestion to training, evaluation, and inference. 

Our team operates like a startup, emphasizing efficiency and hands-on problem-solving. Applicants must write code, debug training jobs, and document their learning experiences.

Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. 

In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day.