Machine Learning Engineer, TikTok Brand Ads
Location: San Jose
Employment Type: Regular
Job Code: A3096
Responsibilities
TikTok Brand Ads team is responsible for the complete technical chain from data construction, model training, offline evaluation, online deployment, inference optimization to new model exploration, covering key tasks such as multimodal semantic understanding, content matching and ranking, and cross‑modal alignment. We are looking for passionate engineers that have strong problem solving skills and algorithm understanding to build and manage systems with high performance, scalability, and availability. You will have the opportunity to partner closely with globalized engineering and product teams in a high‑impact and fast‑paced environment.
- Develop and optimize the entire advertising ranking funnel—including retrieval (candidate generation), coarse‑ranking, and fine‑ranking models.
- Apply state‑of‑the‑art deep learning and recommendation algorithms to improve ad relevance and performance.
- Implement an efficient large‑scale video content indexing and retrieval system to support vector‑level matching and filtering between ad semantics and millions of native videos.
- Set up content understanding pipelines for various business scenarios, processing tens of millions of videos daily.
- Apply technologies such as Embedding Distillation and Hard Negative Mining to optimize the training process.
Qualifications
Minimum qualifications:
- BS degree in Computer Science, Computer Engineering or other relevant majors.
- Excellent programming, debugging, and optimization skills in one or more general purpose programming languages including but not limited to: Go, C/C++, Python.
- Ability to think critically and to formulate solutions to problems in a clear and concise way.
- Relevant professional experience with machine learning, data mining, data analysis, distribution system.
- Experience with one or more of the following: Machine Learning, Deep Learning, NLP, ranking systems, recommendation systems, backend, large‑scale systems, data science, full‑stack.
- Good product sense and experience designing and implementing product features.
Preferred qualifications:
- Possess strong technical background/experience in search/advertising/recommendation systems, NLP, LLM, etc.
- Good understanding in one of the following domains: brand ads, content ads, auction, bidding, ranking, and ads forecasting.
- A strong passion for tackling complex modeling challenges and building large‑scale recommendation systems.
- Experience in video understanding‑related projects.
Job Information
The base salary range for this position in the selected city is $ - $ annually.
Benefits
Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short‑term and long‑term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).
The Company reserves the right to modify or change these benefits programs at any time, with or without notice.
For Los Angeles County (unincorporated) Candidates
Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:
- Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;
- Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems;
- Exercising sound judgment.