Senior Machine Learning Engineer

Summary

Join Reddit's Ads Engagement Modeling team as a Senior Machine Learning Engineer and contribute to the development of cutting-edge models for ad engagement prediction. You will be responsible for researching, implementing, and deploying innovative model architectures, conducting systematic feature engineering, and collaborating with cross-functional teams to ensure successful product delivery. This role offers the opportunity to leverage your expertise and shape the future of ads ML at Reddit.

Requirements

• Proven track record of driving KPI improvements through strategic work in model architecture and feature engineering
• 3+ years of experience building industry-level deep learning models
• 3+ years of experience with mainstream ML frameworks, such as TensorFlow and PyTorch
• 4+ years of hands-on experience with the full lifecycle of training, evaluating, testing, and deploying industry-level models
• Experience iterating large-scale neural network models in a production environment is a must

Responsibilities

• Build industry-level models for critical machine learning tasks, applying advanced modeling techniques
• Research, implement, test, and launch innovative model architectures, including deep neural networks with advanced pooling and feature interaction designs
• Conduct systematic feature engineering to transform diverse raw data from Reddit (dense, sparse, behavioral, content, etc.) into actionable features using techniques such as aggregation, embedding, sub-models, and more
• Serve as a mentor and advocate across teams, fostering collaboration and knowledge sharing
• Contribute meaningfully to the team’s strategic direction. We value everyone’s input and encourage active participation in shaping our future roadmap

Preferred Qualifications

Familiarity with the Ads domain is a strong plus

Benefits

• Comprehensive Healthcare Benefits
• 401k Matching
• Workspace benefits for your home office
• Personal & Professional development funds
• Family Planning Support
• Flexible Vacation (please use them!) & Reddit Global Wellness Days
• 4+ months paid Parental Leave
• Paid Volunteer time off