Machine Learning Engineer Intern (Trust and Safety - CV/NLP/Multimodal LLM) - 2026 Summer (BS/MS)

About the role

TikTok is the leading destination for short-form mobile video. The algorithm team develops state-of-the-art computer vision, NLP, and multimodality models and algorithms to protect the platform and users from violating community guidelines and regulations.

Responsibilities

• Leverage multimodal large models to explore few-shot and zero-shot strategies for content safety scenarios, and build moderation models with strong generalization capabilities.
• Participate in reinforcement learning-based data mining, and help design Chain-of-Thought (CoT) annotation frameworks to improve the model's understanding of complex risks.
• Build risk ranking and recall systems to enhance coverage and accuracy in identifying high-risk content.
• Collaborate with product and policy teams to drive real-world deployment and performance optimization of moderation algorithms.

Qualifications

• Currently pursuing a Master degree with a background in computer science, machine learning, or similar fields.
• Solid foundation in machine learning and deep learning; familiarity with multimodal modeling; hands-on experience with large model projects is a plus.
• Interest in content safety, with an understanding of the challenges in risk identification within moderation workflows.
• Proficient in end-to-end algorithm development, including data processing, modeling, and evaluation; experience with PyTorch or TensorFlow is required.
• Able to commit to working for 12 weeks during the Summer of 2026.

Preferred Qualifications

• Strong learning ability, clear communication, and a strong sense of teamwork and responsibility.

Job Information

Compensation Description (Hourly): The hourly rate range for this position in the selected city is $42.75- $42.75. Benefits may vary depending on the nature of employment and the country work location. Interns have day one access to health insurance, life insurance, wellbeing benefits and more. Interns also receive 10 paid holidays per year and paid sick time (56 hours if hired in first half of year, 40 if hired in second half of year). Interns who are not working 100% remote may also be eligible for housing allowance.

TikTok

TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Diversity & Inclusion

TikTok 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 TikTok, 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.