Head of Machine Learning

Responsibilities

• Design and build the next generation production ML system, including training pipelines, feature pipelines, and real-time inference services
• Work directly in the codebase to prototype models, evaluate approaches, and ship production systems
• Build and lead the machine learning team, including hiring, mentoring, and establishing engineering culture
• Partner with engineering to design infrastructure capable of serving millions of low-latency predictions
• Identify high-impact ML opportunities across bidding, ranking, pacing, fraud detection, and optimization
• Establish best practices around experimentation, model evaluation, monitoring, and continuous improvement
• Translate business and product goals into measurable machine learning improvements

Requirements

• 7+ years of experience building production machine learning systems
• Experience taking ML models from research or prototype to production at scale
• Strong programming background in Python and at least one systems language (C++, Java, Rust, or Go)
• Experience working with large-scale data pipelines and training infrastructure
• Experience scaling ML teams
• Fluent Mandarin required
• Strong product intuition and ability to prioritize ML work based on business impact

Preferred Qualifications

• Experience in advertising technology and real-time systems
• Experience operating ML infrastructure in on-prem environments using open-source tools including Spark, ClickHouse, AeroSpike, and Prefect

About the Company

RZR Global is an AI-driven company specializing in mobile advertising solutions designed to fuel revenue growth. We leverage AI to discover audiences in a privacy-first environment through trillions of contextual bidding signals and proprietary behavioral models.