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TikTok · 1 day ago

Research Engineer - Foundation Models, Ads Integrity

San Jose, CA

Full-time

Onsite

Mid, Senior Level

$137K/yr - $259K/yr

TikTok is the leading destination for short-form mobile video, and they are seeking Research Engineers who are experienced in machine learning. The role involves developing generative AI technologies and collaborating with global teams to enhance content understanding and monetization systems.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Research and develop cutting-edge generative AI technologies, including LLMs, multimodal models (text/image/video), and deepfake detection/synthesis, optimizing performance across pre-training, SFT, RLHF, and AI safety

Design and deploy AIGC solutions for content understanding and monetization in ads, e-commerce, short video, and live streaming, building next-gen AI-driven ecosystems

Advance LLM-based agents with reinforcement learning, enabling autonomous reasoning, planning, and interactive capabilities for real-world applications

Improve efficiency of large-scale model training and inference, exploring techniques like distillation, quantization, and speculative decoding for scalable deployment

Collaborate cross-functionally to productionized research breakthroughs, ensuring robustness, low-latency, and cost-effective AI services

Stay ahead of industry trends, contributing to patents, publications, and open-source projects in generative AI

Qualification

Machine LearningDeep LearningGenerative ModelsLarge-scale Model TrainingReinforcement LearningPyTorchNLPMultimodal LearningAI SafetyAdversarial RobustnessEngineering SkillsPublications

Required

MS or PhD in Computer Science, AI, Machine Learning, or related fields (or equivalent industry experience)

Solid transferrable experience in deep learning, NLP, and generative models (LLMs, diffusion models, etc.)

Hands-on experience with large-scale model training, RLHF, and multimodal learning

Proficiency in PyTorch, JAX, or TensorFlow, and familiarity with distributed training frameworks

Preferred

Publications at top-tier conferences (NeurIPS, ICML, ACL, CVPR, etc.) are a plus

Knowledge of AI safety, alignment, and adversarial robustness

Experience in building agentic systems with reinforcement learning

Strong engineering skills for deploying models at scale

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)