Principal Software Engineer, ML Feature Platform

Location:
This role is completely remote-friendly. If you happen to live close to one of our physical office locations, our doors are open for you to come into the office as often as you'd like. 

Who We Are:
The Machine Learning Platform team at Reddit is a high-impact team that owns the infrastructure that powers recommendations, content discovery, user and content quantification, while directly impacting other teams such as Growth, Ads, Feeds, and Core Machine Learning teams.

What You’ll Do:
As a Principal Software Engineer, ML Feature Platform, you will oversee the vision and lead the charge of our ML Feature Platform Team and be instrumental in architecting, implementing, and maintaining foundational ML infrastructure used to compute, store, and retrieve features powering Feeds Ranking, Content Understanding, Recommendations, Ads, and much more to fulfill Reddit’s mission of bringing community and belonging to everyone in the world. You will be a visionary who will lead the design and development of a cutting-edge feature store optimized for low-latency online inference at scale. 

• Lead the technical strategy, architecture and development of Reddit’s next-generation, real-time feature store that supports both online and offline feature retrieval.
• Work with other engineers across ML Platform and Reddit infrastructure to significantly advance the ML Platform.
• Work with management on team goal setting, planning, and de-risk project execution
• Mentor other team members in adopting a rigorous DevOps approach to maintain and/or improve ML infra components and services health and quality

Who You Might Be:

• 10+ years of professional software engineering experience
• 3+ years leading a team to design large-scale distributed systems.
• Deep expertise in systems design, performance optimization, and cloud-native architectures (AWS, GCP, or Azure).
• Strong understanding of ML infrastructure, especially feature engineering, data freshness, feature versioning, online/offline feature retrieval and online/offline consistency to serve 100s of millions of users.
• Proven experience building real-time data systems, e.g., feature stores, stream processing engines, or caching systems.
• Strong organizational & communication skills

Benefits:

• Comprehensive Healthcare Benefits and Income Replacement Programs
• 401k Match
• Family Planning Support
• Gender-Affirming Care
• Mental Health & Coaching Benefits
• Flexible Vacation & Reddit Global Days off
• Generous paid Parental Leave  
• Paid Volunteer time off

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