Research Scientist (LLM) - 2026 Start (PhD)

Pangle; San Jose, Northern (CA, KY); On-site; USD 120,000 - 180,000; Full time

Job summary

ByteDance is seeking talented researchers for the LLM team in San Jose. The role involves exploring large-scale models, data construction, and optimization across pretraining, posttraining, and inference.

You will work on improving capabilities like reasoning and coding, with a focus on real-world applications. Successful candidates should have a recent PhD in a relevant field and strong programming skills (C/C++ or Python).

Qualifications

• Minimum Qualifications: PhD in Computer Science, Electrical Engineering, or related field.
• Excellent coding ability and fundamentals in algorithms.

Responsibilities

• Explore large-scale models and optimize systems.
• Data construction, instruction tuning, preference alignment, and model optimization.
• Improving model capabilities such as reasoning, code, math.
• In-depth research and exploration of future use cases.

Skills

C/C++

Python

Data structures

Algorithms

Education

PhD in Computer Science or related

Job description

Join us as we work together to inspire creativity and enrich life around the globe.

Location:

San Jose

Team:

Technology

Employment Type:

Regular

Job Code:

A191140A

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Responsibilities

About The Team:LLM team is dedicated to advancing the next generation of LLMs and solving, fundamental challenges in LLM development. Our areas of focus include model pretraining, posttraining, inference, memory capabilities, learning, interpretability and other related directions. We dive deep into the latest technologies and create comprehensive solutions from concept to completion. In our endeavor to adopt LLMs in real-life scenarios, we explore methods to enhance applications through technological innovation.We are looking for talented individuals to join our team. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth.Successful candidates must be able to commit to an onboarding date by the end of the year. Please state your availability and graduation date clearly in your resume.

• Explore large-scale models and optimize systems
• Data construction, instruction tuning, preference alignment, and model optimization
• Improving relevant model capabilities, such as reasoning, code, math etc
• In-depth research and exploration of future use cases

Qualifications

Minimum Qualifications- Individuals who are completing or have recently completed a PhD degree in Computer Science, Electrical Engineering, Electrical and Computer Engineering, Physics, Mathematics, or a related discipline.- Excellent coding ability, data structures, and fundamental algorithm skills, proficient in C/C++ or Python, etc.Individuals who are completing or have recently completed a PhD degree in Computer Science, Electrical Engineering, Electrical and Computer Engineering, Physics, Mathematics, or a related discipline.Preferred Qualifications- Experience with large-scale model training, deep learning and machine learning algorithms are preferred;- Candidates who have led influential projects or papers in the field of large-scale models are preferred;- Excellent problem analysis and solving skills, able to deeply solve problems in large-scale model training and application;- Good communication and collaboration skills, able to explore new technologies with the team and promote technological progress.As a condition of employment, all successful candidates must be able to establish authorization to work in the United States. For this position, the Company does not provide sponsorship or any immigration-related benefits.

Job Information

About Doubao (Seed)

Established in 2023, the ByteDance Seed team is dedicated to pioneering new paths toward artificial general intelligence. We aspire to advance the frontier of intelligence to drive progress for both technology and society.

With a long-term vision for the AI sector, the Seed team's research spans MLLM, GenMedia, AI for Science, and Robotics. We maintain a global presence with laboratories and career opportunities across China, Singapore, and the United States. To date, we have launched industry-leading general foundation models and cutting-edge multimodal capabilities. Our technology powers over 50 application scenarios — including Doubao, Jimeng, TRAE, Dola and Dreamnia — and serves enterprise customers through Volcano Engine and BytePlus. Third-party data shows that the Doubao App ranks first in user volume in the Chinese market, while Doubao foundation models lead the industry in average daily token consumption.

Why Join ByteDance

Inspiring creativity is at the core of ByteDance's mission. Our innovative products are built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and enrich life - a mission we work towards every day.

As ByteDancers, we strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. By constantly iterating and fostering a "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our Company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

ByteDance is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At ByteDance, our mission is to inspire creativity and enrich life. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.

Reasonable Accommodation

ByteDance is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at https://tinyurl.com/RA-request