Senior Machine Learning Engineer

Summary

Join Reddit's Ads Engagement Modeling team as a Senior Machine Learning Engineer and contribute to building industry-level models for critical machine learning tasks. You will research, implement, and launch innovative model architectures, conduct systematic feature engineering, and mentor team members. This role requires 3+ years of experience building deep learning models and experience with TensorFlow and PyTorch. Reddit offers a remote-friendly work environment and comprehensive benefits, including health benefits, retirement savings plan, workspace benefits, personal and professional development funds, family planning support, and flexible vacation time.

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 Health benefits
• Retirement Savings plan with matching contributions
• Workspace benefits for your home office
• Personal & Professional development funds
• Family Planning Support
• Flexible Vacation & Reddit Global Days Off