Staff Machine Learning Engineer - Consumer AI Systems

About the Role

We are seeking a Staff Machine Learning Engineer to join our team at Reddit, where you will play a critical role in shaping the future of our AI systems. This remote position offers the opportunity to work on large-scale machine learning projects that impact millions of users daily.

What You'll Work On

As a Staff Machine Learning Engineer, you will lead high-impact initiatives across various domains including recommendations, search, and messaging. You will collaborate with cross-functional teams to drive the next generation of Reddit’s ML ecosystem.

What You'll Do

• Architect, build, and deploy large-scale ML systems powering recommendations, search, messaging, and content understanding.
• Lead projects from ideation to production, ensuring high-quality outcomes.
• Design and improve recommender systems and ranking models across various surfaces.
• Optimize for user engagement, discovery, and long-term value.
• Develop pipelines that help users find high-quality answers and content across Reddit’s corpus.
• Leverage and advance LLMs and multimodal models for deeper understanding and personalization.
• Evaluate model performance, improve accuracy, and reduce bias.
• Mentor engineers and establish best practices for ML development and responsible AI.

Requirements

• 6+ years of experience building, deploying, and operating machine learning systems in production.
• Strong programming skills in Python, Go, or similar languages.
• Hands-on experience with modern ML frameworks (e.g., PyTorch, TensorFlow).
• Experience designing scalable ML pipelines and data processing systems.
• Ability to work cross-functionally and translate ambiguous product or business problems into technical solutions.

Nice to Have

• Subject matter expertise in recommender systems, search systems, or large-scale representation learning.
• Familiarity with distributed systems and large-scale data processing frameworks.
• Experience with LLM/Gen AI techniques and productionizing LLM-powered products.

What We Offer

• Comprehensive healthcare benefits and income replacement programs.
• 401k with employer match.
• Flexible vacation and paid volunteer time off.
• Generous paid parental leave.
• Global benefit programs that fit your lifestyle.

This Staff Machine Learning Engineer role at Reddit is an exciting opportunity for those passionate about machine learning and AI. Join us to make a significant impact in the world of online communities!