ML Engineer — Real-Time E‑commerce AI & Recommendations

TikTok; Seattle (WA); On-site; USD 154,000 - 301,000; Full time

Job summary

TikTok is hiring for a Global E-commerce Algorithm role in Seattle. You will develop large-scale algorithms that merge physical logistics with digital experiences, shaping discovery and growth.

Responsibilities include building ETA predictions with OneTrans, pricing via causal inference, and integrating fulfillment factors into Search and Recommendation. You will also lead LLM and AI agent innovations to diagnose and resolve complex user-facing issues.

Qualifications

• Master's or PhD in a quantitative field.
• Proficient programming in Python, C++, or Java.
• Experience with big data tools and deep learning frameworks.
• Experience with A/B testing and data-driven decision making.
• Ability to translate complex problems into scalable algorithms.
• Passion for solving high-impact e-commerce challenges.

Responsibilities

• Next-Gen ETA Prediction: Build end-to-end ETA systems using OneTrans and deep learning.
• Intelligent Pricing via Causal Inference: Design dynamic shipping pricing strategies.
• Conversion & Impression Allocation: Integrate fulfillment factors into ranking.
• LLM & AI Agent Innovation: Develop domain-specific LLMs and agent workflows.

Skills

Data structures & algorithms

Python

C++

Java

A/B testing

Experimentation design

Data-driven decision making

Education

Master's or PhD in a highly quantitative field

Tools

Spark

Hive SQL

TensorFlow

PyTorch

Job description

TikTok is hiring for a Global E-commerce Algorithm role in Seattle. You will develop large-scale algorithms that merge physical logistics with digital experiences, shaping discovery and growth.

Responsibilities include building ETA predictions with OneTrans, pricing via causal inference, and integrating fulfillment factors into Search and Recommendation. You will also lead LLM and AI agent innovations to diagnose and resolve complex user-facing issues.