Responsibilities
Tik Tok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy. Tik Tok has global offices including San Jose, Los Angeles, New York, London, Paris, Berlin, Dubai, Singapore, Jakarta, Seoul and Tokyo.

Why Join Us
Creation is the core of Tik Tok's purpose. Our platform is built to help imagination thrive. This is doubly true of the teams that make Tik Tok possible.
Together, we inspire creativity and bring joy - a mission we all believe in and aim towards achieving every day.
To us, every challenge, no matter how difficult, is an opportunity; to learn, to innovate, and to grow as one team. Status quo? Never. Courage? Always.
At Tik Tok, we create together and grow together. That's how we drive impact - for ourselves, our company, and the communities we serve.
Join us.

About The Team:
The mission of the Tik Tok Eng-AI Innovation Center is to explore cutting-edge AGI technologies, including but not limited to LLM, multi-modal LLM (video/image/audio/text/code), etc., to let machine better understand user creations on Tiktok platform. Regarding to video/image/audio/text, enhanced content understanding can bring better user experience of searching, recommendation, and can more accurately identify and defend internet abuse and fraud on our platform. Regarding to code, our developed LLM aims to automatically re-organize/optimize Tiktok codebase, and make the code/coding become more accessible for Tiktok engineers. The main job directions include:
1. Explore large-scale&multi-modal LLMs and optimize systems to the level of other advanced models, e.g., Gemini;
2. multi-modal pretraining, instruction tuning, preference alignment, and model compression;
3. Implementation of relevant applications, including video understanding, reasoning and code generation, etc.;
4. In-depth research and collaboration with researchers from top-tier universities worldwide;
Qualifications
Minimum Qualification
1. PHD or Master with top AI conference papers in ML/CV/NLP are required;
2. Excellent coding ability, data structures, and fundamental algorithm skills, proficient in C/C++ or Python, winners of competitions such as ACM/ICPC, NOI/IOI, Top Coder, Kaggle, etc. are preferred
3. In-depth research experience in Machine Learning, with a particular emphasis on Large Language Models (LLMs) and Generative AI
4. Excellent ability to analyze and solve problems, and be passionate about solving challenging problems

Preferred Qualifications
1. Passion for technology, good communication skills and team spirit

Tik Tok 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 Tik Tok, our mission is to inspire creativity and bring joy. 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.