PhD ML Engineer Intern — Large-Scale E‑commerce AI

TikTok; Singapore; On-site; SGD 17,000 - 26,000; Full time

Job summary

TikTok’s E-commerce Algorithm Team is offering an internship for PhD candidates to contribute to cutting-edge ML solutions within our large-scale e-commerce ecosystem. You will work on recommendations, ranking, and conversational AI, applying PyTorch or TensorFlow to real-world business challenges and partnering with cross-functional teams.

Join us to design end-to-end algorithmic solutions, build scalable data pipelines, and iterate rapidly with supervision from seasoned engineers and

Qualifications

• Currently pursuing a PhD in Software Development, Computer Science, Computer Engineering, or a related technical discipline.
• Solid foundation in machine learning, deep learning, statistics, and algorithms.
• Strong programming skills in Python, C++, Java, Go, or Rust.
• Hands-on experience with PyTorch or TensorFlow.
• Self-driven mindset, curiosity for challenging problems, strong ownership, and the ability to turn algorithm ideas into business-impacting solutions.
• Good communication and collaboration skills, with the ability to work effectively in cross-functional teams and adapt to fast-changing business needs.

Responsibilities

• Design and develop ML algorithms and intelligent systems for large-scale e-commerce scenarios: recommendation, ranking, retrieval, forecasting, content understanding, pricing, governance, and conversational AI.
• Apply machine learning, deep learning, NLP, CV, multimodal models, and LLMs to solve real-world business problems.
• Build end-to-end algorithm solutions: data processing, feature engineering, model training, evaluation, deployment, monitoring, and continuous optimization.
• Develop scalable systems for real-time or offline learning and inference on large-scale structured and unstructured data.
• Partner with product, engineering, data science, and business teams to translate needs into high-impact technical solutions.
• Run experiments, analyze model performance, debug production issues, and iterate rapidly to improve quality and efficiency.
• Explore next-gen intelligent systems: foundation models, generative recommendation, multimodal reasoning, and AI agents.

Skills

Machine learning

Deep learning

Statistics

Python

Communication

Education

PhD in Computer Science/Software Development/Computer Engineering or related

Tools

PyTorch

TensorFlow

Job description

TikTok’s E-commerce Algorithm Team is offering an internship for PhD candidates to contribute to cutting-edge ML solutions within our large-scale e-commerce ecosystem. You will work on recommendations, ranking, and conversational AI, applying PyTorch or TensorFlow to real-world business challenges and partnering with cross-functional teams.

Join us to design end-to-end algorithmic solutions, build scalable data pipelines, and iterate rapidly with supervision from seasoned engineers and