Senior ML Engineer — Ads Ranking & Scalable Models

Unity Technologies; Mountain View (CA); On-site; USD 172,000 - 258,000; Full time

Job summary

Unity Technologies is seeking a Senior Machine Learning Engineer to join the Vector Core Modeling team. Design and build scalable ML systems powering ad ranking in large-scale advertising platforms, working with massive datasets and rich signals.

You will collaborate with product, infra, and monetization teams to improve model quality, latency, and scalability, while prototyping state-of-the-art approaches and leading projects end-to-end.

Qualifications

• Hands-on ML and deep learning for real-world problems.
• Strong Python software engineering with PyTorch experience.
• Understanding of metric design, experiments, and large-scale data analysis.
• Proven ability to lead projects end-to-end and deliver business impact.

Responsibilities

• Design, implement, and optimize the core ads models.
• Build and enhance multi-objective ranking systems.
• Address cold-start problems for new users, games, creatives.
• Conduct offline evaluations and online A/B experiments.
• Collaborate with product, infrastructure, and monetization teams.
• Improve model quality, latency, and scalability.

Skills

ML & DL models

Python

PyTorch

Metrics & experiments

Job description

Unity Technologies is seeking a Senior Machine Learning Engineer to join the Vector Core Modeling team. Design and build scalable ML systems powering ad ranking in large-scale advertising platforms, working with massive datasets and rich signals.

You will collaborate with product, infra, and monetization teams to improve model quality, latency, and scalability, while prototyping state-of-the-art approaches and leading projects end-to-end.