Staff ML Engineer - App Ads Modeling (Remote)

Engg; United States; Remote; USD 230,000 - 322,000; Full time

Benefits offered by this job

Healthcare

401k Match

Vacation & Leave

Parental Leave

Mental Health Support

Job summary

Reddit is seeking a Staff-level Machine Learning Engineer to advance its Ads Ranking systems. You will design and train models (DNNs, transformers), develop embeddings and contextual signals, and collaborate with product, infra, and data teams for end-to-end deployment.

You’ll mentor peers and help set long-term modeling vision across domains like conversion and app ads. The role emphasizes production-grade ML, large-scale data pipelines, and a strong background in recommender systems and ads

Qualifications

• 7+ years of industry experience in applied ML roles.
• Strong experience with Deep Learning architectures and ML frameworks (TensorFlow, PyTorch).
• Strong background in recommendation systems, ads ranking, or similar domains.
• Experience working with large-scale datasets and complex feature pipelines.
• Strong problem-solving and experimentation skills.
• State of the Art models for Ads or Recsys (Transformers, Recsys).
• Knowledge about Recsys or Ads funnel.
• Track record of delivering high-impact models in production settings.
• Comfort collaborating with infra and data teams on feature serving and training pipelines.

Responsibilities

• Design and train advanced ML models (e.g., DNNs, transformers) to power Reddit Ads Ranking.
• Develop and optimize features including embeddings, contextual signals, and cross-session behavior.
• Work closely with product, infra, and data teams to drive end-to-end model deployment and performance analysis.
• Mentor other MLEs and contribute to modeling best practices across the org.
• Shape the long-term modeling vision across one or more domains (conversion, app ads, shopping, brand, etc.).

Skills

Deep Learning

Recommender Systems

TensorFlow

PyTorch

Production ML

Data Pipelines

Experimentation

Model Deployment

Infra Collaboration

Tools

TensorFlow

PyTorch

Job description

Reddit is seeking a Staff-level Machine Learning Engineer to advance its Ads Ranking systems. You will design and train models (DNNs, transformers), develop embeddings and contextual signals, and collaborate with product, infra, and data teams for end-to-end deployment.

You’ll mentor peers and help set long-term modeling vision across domains like conversion and app ads. The role emphasizes production-grade ML, large-scale data pipelines, and a strong background in recommender systems and ads