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TikTok · 1 day ago

Algorithm Engineer, E-Commerce Governance and Experience - USDS

San Jose, CA

Full-time

Hybrid

Entry, Mid Level

$137K/yr - $360K/yr

2+ years exp

TikTok is the leading destination for short-form mobile video, and they are seeking an Algorithm Engineer to enhance user experience on their e-commerce platform. The role involves developing AI systems that leverage Natural Language Processing and Large Language Models to analyze consumer feedback and improve service quality.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Develop LLM-based CCR/VOC Models: Design and implement LLM-based CCR/VOC models, to cover user feedback from multiple channels, including reviews, after-sales service, customer service conversations, and tNPS, etc. Based on a 100+ intent classification system, identifies the user's feedback intent accurately

Apply Advanced LLM Techniques: Utilize state-of-the-art LLM post-training techniques, such as instruction tuning, Reinforcement Learning from Human Feedback (RLHF), and continuous learning, to optimize the system with minimal labeled data

Build Robust Training Datasets: Identify challenging user feedback scenarios—including logistics inquiries, merchant issues, and platform-related problems—and construct specialized datasets to enhance AI model training

Enable Multilingual and Multicultural Support: Build AI models capable of recognizing user feedback across diverse languages and cultural backgrounds, ensuring accurate semantic understanding for a global audience

Optimize Model Efficiency and Deployment: Research and apply model compression, quantization, and efficient inference techniques to ensure the AI assistant operates at scale with low latency and high reliability

CCR/VOC RCA Agents： Focusing on pain points in CCR, such as the need for rapid implementation of new labels and inefficient CCR problem handling processes in business side, this project leverages the agent's autonomous interaction and intelligent decision-making capabilities to optimize existing models and processes. Through scenario-based training and iteration, the agent becomes a highly efficient assistant for CCR operations, solving the problems of slow response and low conversion rates in traditional models, and improving service quality and customer experience

Qualification

Natural Language ProcessingLarge Language ModelsMachine LearningMultilingual NLPDeep LearningSoftware DevelopmentE-commerce AcumenReinforcement LearningCross-lingual DialogueTeam Collaboration

Required

Bachelor's degree in Computer Science or a related technical field

2+ years of professional experience in one or more of the following fields: Machine Learning, Natural Language Processing (NLP), or Computer Vision

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

Preferred

Experience in fine-tuning, distillation, or reinforcement learning for large language models in conversational AI applications

Proficiency in multilingual NLP, machine translation, and cross-lingual dialogue modeling

Experience in developing and optimizing e-commerce video and product multimodal large models, combining LLMs with video/product representations to support tasks like multimodal classification, video QA, and cross-modal retrieval

A strong understanding of e-commerce policies, dispute resolution workflows, and merchant-buyer interactions to inform AI service design

Expertise in AI agents, Retrieval-Augmented Generation (RAG), Mixture of Experts (MoE), sparse attention, reinforcement learning, and inference-time scaling

Experience with distributed model training, low-latency inference, and deploying models efficiently

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

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Trends of Total Sponsorships

2025 (979)

2024 (601)

2023 (387)

2022 (322)

2021 (133)

2020 (72)