Senior Research Engineer (LLM/ML/RL) - TikTok Ads Core ML, Ranking

TikTok Ads Core ML Team aims at creating automatic delivery products for the next generation and developing advertising as a global business, instead of just a monetization tool to consolidate the delivery funnel framework allowing multiple teams to iterate parallel.

We're looking for innovative Senior Research Engineers focused on ML/RL/LLM or other relevant professional domains, to join our TikTok Ads Core ML Ranking team. Ads Core Ranking team specifically focuses on maximizing delivery system efficiency and revenue growth through state-of-the-art models and frameworks. Our research topics include but not limited to: Generative Retrieval and Large Recommendation Model, LLM-based Ranking Application, and Optimization of System Resource Allocation with ROI target.

As part of our team, you will be responsible for:
- Enhance efficiency across the entire advertising funnel, including Recall & Rough-sort, Fine-sort (CTR/CVR prediction), creative personalization, and system resource allocation to maximize both user engagement and business outcomes.
- Lead the research and development of advanced global advertising delivery systems, utilizing technologies such as Machine Learning, Deep Learning, Reinforcement Learning, LLMs, and scaling laws in ads recommendations.
- Explore and apply the latest advancements in AI and data science to unlock new opportunities for personalized ad delivery and user engagement.
- Share knowledge and best practices within the team, mentor junior engineers, and contribute to the company’s long-term technological strategy.
- Work closely with product, engineering, and business teams across global markets, ensuring that technological advancements align with business objectives and deliver measurable impact in various advertising scenarios.

All of our team effort, is to continuously pursue and establish a world-leading ranking model & framework that always benefits our collaborators, users and customers to get better return.