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Staff Machine Learning Engineer
Location
United States
Posted
82 days ago
Salary
$230K - $322K / year
Seniority
Lead
Job Description
Staff Machine Learning Engineer
Reddit, Inc.
• Architect, build, and deploy large-scale ML systems powering recommendations, search, messaging, and content understanding • Lead projects from ideation → modeling → experimentation → production → iteration • Design and improve recommender systems and ranking models across surfaces (feed, search, notifications) • Optimize for user engagement, discovery, and long-term value • Build next-gen AI-powered search and recommendation experiences, including LLM-integrated systems • Develop pipelines that help users find high-quality answers and content across Reddit’s corpus • Build and optimize content embeddings and representation models for users, communities, and content • Leverage and advance LLMs and multimodal models for deeper understanding and personalization • Evaluate model performance, improve accuracy, and reduce bias • Partner with Product, Data Science, Infra, and UX teams to solve complex problems • Translate ambiguous business needs into scalable ML solutions • Mentor engineers and raise the bar across the organization • Establish best practices for ML development, experimentation, and responsible AI • Act as a thought leader across teams and domains
Job Requirements
- 6+ years of experience building, deploying, and operating machine learning systems in production
- Strong programming skills in Python, Go, or similar languages, with solid software engineering fundamentals
- ML Fundamentals: a strong grasp of algorithms, from classic statistical learning (XGBoost, Random Forests, regressions) to DL architectures (Transformers, CNNs, GNNs)
- Hands-on experience with modern ML frameworks (e.g., PyTorch, TensorFlow)
- Experience designing scalable ML pipelines, data processing systems, and model serving infrastructure
- Ability to work cross-functionally and translate ambiguous product or business problems into technical solutions
- Experience driving measurable impact through applied machine learning.
Benefits
- Comprehensive Healthcare Benefits and Income Replacement Programs
- 401k with Employer Match
- Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
- Family Planning Support
- Gender-Affirming Care
- Mental Health & Coaching Benefits
- Flexible Vacation & Paid Volunteer Time Off
- Generous Paid Parental Leave
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