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 4+ years of experience with the full model lifecycle. Reddit offers a remote-friendly work environment and comprehensive benefits, including healthcare, 401k matching, workspace benefits, personal and professional development funds, flexible vacation, parental leave, and paid volunteer time off. Help shape the future of ads ML at Reddit and be part of a diverse and inclusive community.

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

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

Preferred Qualifications

Familiarity with the Ads domain

Benefits

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