Staff ML Engineer — Ads Delivery Lead

Reddit, Inc.; San Francisco (CA); On-site; USD 230,000 - 322,000; Full time

Benefits offered by this job

Healthcare Benefits

401k with Employer Match

Global Benefit programs

Parental Leave

Mental Health Support

Job summary

Reddit, Inc. is seeking a Staff Machine Learning Engineer for Shopping Ads to lead the technical strategy and execution of ML models powering Shopping Ads delivery.

You will own end-to-end development, from data design to deployment, spanning targeting, retrieval, ranking, and value optimization across multiple models and teams. You will mentor engineers, drive architecture decisions, and push for production-ready systems with strong observability while balancing accuracy, latency, and cost.

Qualifications

• 7+ years of professional software or ML engineering experience.
• Experience building end-to-end models that improve advertising, recommendation, search, or marketplace performance.
• Experience optimizing low-funnel objectives such as conversion, purchase value, revenue, or similar metrics.
• Hands-on model development, feature engineering, training/evaluation pipelines, online inference, and experimentation.
• Proven ability to deliver complex results requiring multiple systems or teams.
• Experience applying modern ML models in production and delivering measurable improvements.
• Technical leadership: setting direction, driving architecture, mentoring engineers, and cross-functional influence.

Responsibilities

• Lead the ML strategy and architecture for Shopping Ads delivery across targeting, retrieval, ranking, engagement and value optimization.
• Own end-to-end model development from opportunity sizing, data/label design, feature engineering, model selection, evaluation, deployment and monitoring.
• Build and optimize models for low-funnel advertiser objectives while balancing quality, latency, and cost.
• Mentor engineers and technical leads, ensure clear ownership, and drive execution across multiple teams.

Skills

Machine learning engineering

End-to-end models

Online experimentation

Mentoring engineers

Low-latency systems

Communication

Job description

Reddit, Inc. is seeking a Staff Machine Learning Engineer for Shopping Ads to lead the technical strategy and execution of ML models powering Shopping Ads delivery.

You will own end-to-end development, from data design to deployment, spanning targeting, retrieval, ranking, and value optimization across multiple models and teams. You will mentor engineers, drive architecture decisions, and push for production-ready systems with strong observability while balancing accuracy, latency, and cost.