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(General Hire) Multi-modal Machine Learning Engineer - Trust and Safety

San Jose, United States of America💼 Full-time🗓 2026-09-28

Core

Build and deploy machine learning models and systems to moderate content and protect users from negative content on TikTok's global platform.

Role type

Senior IC multi-modal machine learning engineer (trust and safety)

Builds

Content understanding models, classifiers, and serving pipelines for content moderation

Domain

Social media platform, content safety, multimodal AI

Deliverable

production ML models

Required skills

machine learning (CV/NLP/Multimodal/Graph/LLM), statistical models, applied mathematical methods, Python programming, system design for online ML workflows

Preferred skills

LLM development, multimodal modeling, representation learning, online ML systems (ranking/retrieval), publications in AI/ML conferences

Technologies

Python, LLMs, graph models, representation learning models

Responsibilities

Lead and build content understanding models for content moderation; Work on state-of-the-art content understanding techniques including unimodal/multimodal classifiers, graph models, and LLMs; Collaborate with product teams to define business objectives and improve trust and safety strategy; Collaborate with engineering teams to deploy machine learning models and implement serving pipelines at scale; Collaborate with data scientist teams to understand key challenges and propose data-driven strategies

Seniority

Senior, hands-on IC

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