Senior Machine Learning Systems Engineer, Ranking Platform

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

At Reddit, ML Ranking Platform is the brain behind how millions of people discover content every day. ML Ranking Platform powers 40+ Reddit products including home feed, search, subreddit feeds, push notifications and others. It runs a scatter-gather ranking orchestration service that coordinates contextualized and personalized ranking on Reddit. We provide Product Engineers and ML Modeling Engineers with a platform to develop the ranking, recommendation and personalization products to delight, engage and retain Reddit users.

How You'll Have Impact

As a Senior Software Engineer, ML Ranking Platform, you will design, implement and maintain highly robust, scalable, reliable and performant ranking systems that power personalized feeds, search, and other products at Reddit scale. You’ll drive and deliver high-impact projects, building the ranking engines that orchestrate workflows for a reliable and performant ML-based system. Your work not only powers Reddit feeds; it’ll also shape how communities connect, grow, and thrive across Reddit!

• Design and implement the next generation ML ranking system that powers the personalized feeds, search and other products at Reddit
• Design and develop ML and Generative AI systems in cloud-based production environments at scale
• Partner closely with Product, Infrastructure and Engineering teams and translate requirements into scalable ML systems
• Write efficient, scalable and maintainable code that will help us iterate quickly and safely
• Champion and drive engineering processes and best practices
• Raise the bar for engineering across the team through code reviews, mentorship and knowledge sharing

Who You Migh