Algorithm Engineer, TikTok E-Commerce (Conversational AI)

TikTok
San Jose
Workplace: OnsiteFull timeFunction: Data Science & Machine LearningExperience: 3+ yearsEducation: bachelorsSkills: ["Cross-lingual communication"]

Build AI-powered conversational customer service for TikTok’s global e-commerce platform. Design and deploy LLM-based systems to handle inquiries, disputes, refunds, and seller assistance, with continual improvements via instruction tuning, RLHF, and data-efficient post-training. Construct specialized training datasets, expand multilingual support, and optimize model efficiency (compression, quantization, low-latency inference) while defining evaluation metrics and improving quality through A/B testing.

Loading

Loading job details...

Preparing the role view and application actions.

FursaFursa
TikTok
TikTok
1 month ago

Algorithm Engineer, TikTok E-Commerce (Conversational AI)

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 23 hours agoStatus: Live

Job Summary

Build AI-powered conversational customer service for TikTok’s global e-commerce platform. Design and deploy LLM-based systems to handle inquiries, disputes, refunds, and seller assistance, with continual improvements via instruction tuning, RLHF, and data-efficient post-training. Construct specialized training datasets, expand multilingual support, and optimize model efficiency (compression, quantization, low-latency inference) while defining evaluation metrics and improving quality through A/B testing.
Location: San Jose
Workplace: Onsite
Employment Type: Full time
Job Function: Data Science & Machine Learning
Seniority: Mid level

Key Responsibilities

  • •Develop and optimize AI-driven customer service models for high-volume e-commerce inquiries with accurate, reliable responses.
  • •Enhance LLM-based customer interaction quality using post-training strategies to reduce errors and irrelevant outputs.
  • •Build automated dispute resolution and policy-adaptive models that verify transaction details and support platform compliance.
  • •Develop multilingual support and translation models for real-time cross-language customer service interactions.
  • •Define response evaluation metrics and improve conversational quality via A/B testing, iterative optimization, and scalable deployment.

Key Requirements

  • •Bachelor’s degree or higher in computer science, computer engineering, statistics, applied mathematics, data science, or a related field.
  • •At least 3 years of experience in a related field.
  • •Experience fine-tuning, distilling, or using reinforcement learning of large language models for conversational AI.
  • •Proficiency in multilingual NLP, machine translation, and cross-lingual dialogue modeling.
Experience:3+ years
Education:Bachelor's
Skills:Cross-lingual communication
Tech Stack:Large Language Models (LLMs)NLPInstruction tuningRLHFReinforcement learningMultilingual NLPMachine translationRetrieval augmented generationMixture of expertsSparse attentionModel compressionQuantizationLow-latency inferenceA/B testing

Company Brief

TikTok
Short-form video platform that lets users create, share, and discover entertainment content through algorithmic recommendations. It also offers advertising and creator tools for brands, influencers, and businesses.
Industry: Digital Media
Company Size: Enterprise (1,001+ employees)
Growth: Scaleup
Headquarters: Singapore, Singapore
Founded: 2016
WebsiteLinkedIn