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TikTok · 3 weeks ago

Applied Scientist, TikTok E-Commerce - Conversational AI, USDS

San Jose, CA

Full-time

Onsite

Mid Level

$137K/yr - $360K/yr

3+ years exp

TikTok is the leading destination for short-form mobile video, and they are seeking an Applied Scientist to join their US Data Security team. The role focuses on developing AI-powered customer service systems for TikTok's e-commerce platform, utilizing advanced AI techniques to enhance user interactions and optimize operational efficiency.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Develop AI Customer Support Systems: Build and optimize AI-driven customer service models capable of handling high-volume, complex user inquiries while ensuring high response accuracy and reliability

Enhance LLM-Based Customer Interaction Models: Implement LLM post-training strategies to improve customer support interactions, reducing errors, hallucinations, and irrelevant responses

Create Automated Dispute Resolution & Policy-Adaptive AI: Develop intelligent models capable of handling disputes, verifying transaction details, and ensuring platform compliance in automated responses

Develop Multilingual Support & Translation Models: Enhance the platform’s AI translation capabilities for real-time multilingual customer service interactions, ensuring smooth cross-language communication

Refine Response Evaluation Metrics: Define and implement quality evaluation metrics for AI-generated responses to track customer satisfaction and improve conversational AI quality through A/B testing and iterative optimization

Enable AI-Seller Collaboration: Build AI-powered seller assistance tools to help merchants quickly respond to customer inquiries, manage store operations, and resolve disputes efficiently

Optimize Large-Scale Model Deployment: Work on model compression, inference optimization, and edge AI deployment to ensure real-time, high-quality customer service experiences at scale

Qualification

Machine LearningNatural Language ProcessingLarge Language ModelsMultilingual NLPPythonC++Reinforcement LearningE-commerce KnowledgeTeam CollaborationProblem Solving

Required

Bachelor's degree in Computer Science or related technical field

3+ working experience in one of the following fields: machine learning, NLP, and computer vision

Experience with software development in at least one of the following programming languages: C++, Python, Go, Java

Preferred

LLM Development & Post-Training Expertise: Experience in fine-tuning, distillation, or reinforcement learning of large language models for conversational AI applications

Multilingual AI Development: Proficiency in multilingual NLP, machine translation, and cross-lingual dialogue modeling

E-commerce Business Acumen: Understanding of e-commerce policies, dispute resolution workflows, and merchant-buyer interactions to enhance AI service design

Advanced NLP & Deep Learning: Strong grasp of AI agents, retrieval augmented generation, mixture of experts, sparse attention, reinforcement learning, inference time scaling etc. for improving AI dialogue quality

Scalability & Efficiency: Experience in distributed model training, low-latency inference, and edge AI for large-scale customer service applications

Benefits

Employees have day one access to 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

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Trends of Total Sponsorships

2025 (979)

2024 (601)

2023 (387)

2022 (322)

2021 (133)

2020 (72)