ML Engineer II: AI-First Personalization at Scale

Yahoo Holdings Inc.; Champaign (IL); Hybrid; USD 111,000 - 231,000; Full time

Job summary

Yahoo Holdings Inc. is seeking an AI/ML engineer to design, build and deploy high-throughput models powering Yahoo Mail at scale. You will embed AI-driven workflows, optimize daily coding, and collaborate with global teams to deliver robust features in production.

You'll work on distributed data pipelines, architect resilient systems, and help migrate services to a public cloud. Strong Python/Java, PyTorch/TensorFlow, and experience with Spark/Kafka are valued.

Qualifications

• Bachelor's degree in Computer Science, Data Science, or a related technical field or equivalent experience.
• 2+ years of hands-on experience developing, training, and deploying ML models or data-intensive backend systems.
• Strong proficiency in Python or Java (C++ a plus).
• Hands-on experience with modern ML frameworks (PyTorch, TensorFlow, Hugging Face, Scikit-learn).
• Experience deploying models into production using runtimes such as vLLM, TensorRT-LLM, Triton, or ONNX Runtime.
• Familiarity with AI-assisted developer tools (Cursor, Copilot, Claude, ChatGPT).
• Experience with distributed big data platforms (Spark, Hadoop, Kafka).
• Excellent written and verbal communication with international teams.

Responsibilities

• Drive Personalization at scale by designing, building, and deploying AI/ML and NLP models for Yahoo Mail.
• Embed AI-driven workflows to optimize daily coding, testing, and iteration cycles.
• Process massive datasets using ML algorithms and big data pipelines while ensuring security and performance.
• Build resilient systems with robust feedback loops and fallback strategies for edge cases.
• Architectural evolution: migrate backend ML services and data infra to public cloud (GCP).
• Collaborate across global engineering groups to integrate Mail Intelligence models into core platforms.
• Uphold engineering standards with high-quality code, reviews, and sustainable designs.

Skills

Communication

Collaboration

Problem solving

English proficiency

Education

Bachelor's degree in CS/Data Science or related field

Tools

Python

Java

PyTorch

TensorFlow

Hugging Face

Spark

Kafka

ONNX Runtime

vLLM

Job description

Yahoo Holdings Inc. is seeking an AI/ML engineer to design, build and deploy high-throughput models powering Yahoo Mail at scale. You will embed AI-driven workflows, optimize daily coding, and collaborate with global teams to deliver robust features in production.

You'll work on distributed data pipelines, architect resilient systems, and help migrate services to a public cloud. Strong Python/Java, PyTorch/TensorFlow, and experience with Spark/Kafka are valued.