Algorithm Engineer, TikTok E-Commerce (Conversational AI)

What you'll do

• Build and optimize AI customer support systems and seller assistance tools for inquiries, complaints, refunds, and disputes.
• Fine-tune and evaluate LLMs, construct training data, and improve response quality through metrics and A/B testing.
• Develop multilingual support and optimize model compression, inference, and deployment for scalable, low-latency service.

What they ask for

• Bachelor’s degree or above in computer science, computer engineering, statistics, applied mathematics, data science, or a related discipline.
• At least 3 years of work experience in the related field.
• Experience in fine-tuning, distillation, or reinforcement learning of large language models for conversational AI applications.
• Proficiency in multilingual NLP, machine translation, and cross-lingual dialogue modeling.

Nice to have

• Understanding of e-commerce policies, dispute-resolution workflows, and merchant-buyer interactions.
• Knowledge of AI agents, retrieval augmented generation, mixture of experts, sparse attention, reinforcement learning, inference time scaling, distributed model training, low-latency inference, or edge AI.

Tools

LLMs, NLP, RLHF, A/B testing, retrieval augmented generation, mixture of experts, sparse attention, edge AI

AI focus

Build and post-train multilingual conversational AI for e-commerce support, dispute resolution, translation, and seller assistance; improve evaluation, efficiency, and deployment.