ByteDance
Research Scientist (Seed Model - LLM)
San Jose, California · Full-time · Posted Oct 28, 2026
About the job
Research and develop large language models, from model training and optimization to improving capabilities and exploring real-world applications.
What you'll do
- Explore large-scale models and optimize systems.
- Construct data, perform instruction tuning and preference alignment, and optimize models.
- Improve model capabilities such as reasoning, coding, and mathematics, and investigate future use cases.
What they ask for
- Excellent coding ability and knowledge of data structures and fundamental algorithms.
- Proficiency in C/C++ or Python.
- Strong problem analysis and problem-solving skills for large-scale model training and applications.
- Good communication and collaboration skills.
Nice to have
- Experience with large-scale model training, deep learning, and machine learning algorithms.
- Leadership of influential large-scale model projects or papers.
Tools
C/C++, Python
AI focus
Research and development of LLM pretraining, posttraining, inference, memory, learning, interpretability, instruction tuning, preference alignment, model optimization, and capabilities including reasoning, coding, and mathematics.
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