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TikTok · 3 weeks ago

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

San Jose, CA

Full-time

Onsite

Mid Level

$137K/yr - $259K/yr

TikTok is the leading destination for short-form mobile video, and they are seeking innovative Research Engineers focused on ML/RL/LLM to join their Ads Core ML Ranking team. The role involves optimizing advertising funnel efficiency and developing advanced advertising delivery systems using frontier technologies.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Optimize efficiency across the entire advertising funnel, including Recall&Rough-sort, Fine-sort(CTR/CVR), format/creative personalization and system resource allocation

Research & develop a global advanced advertising delivery system through frontier technologies, including ML/DL, RL, LLM and also scaling law in ads recommendation

Design & Set up system framework and standard to continuously improve overall efficiency and meet different vertical business needs

Work with product and business teams from various scenarios with global impact

Qualification

Machine LearningDeep LearningReinforcement LearningPythonC/C++TensorFlowPyTorchBig Data SystemsCuriosityTeam Collaboration

Required

BS/MS degree in Computer Science, Statistics, Operation Research, Applied Mathematics, Physics or similar quantitative fields/with related experience

Research/industry experience in one or more of the following areas: machine learning, deep learning, statistical models and applied mathematical methods etc

Solid programming skills, proficient in C/C++ and Python. Familiar with basic data structure and algorithms

Familiar with at least one mainstream machine learning programming framework (TensorFlow/PyTorch/MXNet)

Familiarity with online experimentation and analytics. Familiarity with big data systems including Hadoop and Spark

Curiosity towards learning and applying new technologies

Preferred

Participation in national math/coding competitions (ACM/Hacker Cup/Hash Code/USACO/IOI/CCPC etc.)

Paper publications/citations in NLP/CV/Recommender System(RecSys/KDD/ICML/CVPR/NeurIPs, etc.)

Experience in LLM, reinforcement learning, transfer learning, and counter-factual optimization is a plus

Benefits

Medical, dental, and vision insurance

401(k) savings plan with company match

Paid parental leave

Short-term and long-term disability coverage

Life insurance

Wellbeing benefits

10 paid holidays per year

10 paid sick days per year

17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure)

Company

TikTok

Glassdoor3.4

TikTok is a short-form video entertainment app and social network platform. It is a sub-organization of ByteDance.

Founded in 2003

Los Angeles, California, USA

10001+ employees

https://www.tiktok.com

H1B Sponsorship

TikTok has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (979)

2024 (601)

2023 (387)

2022 (322)

2021 (133)

2020 (72)