Principal Software Engineer, ML Feature Platform

Reddit is seeking a Principal Software Engineer, ML Feature Platform to lead the design and development of a cutting-edge feature store optimized for low-latency online inference at scale. The role requires 10+ years of professional software engineering experience, 3+ years of leading a team, and deep expertise in systems design, performance optimization, and cloud-native architectures.

Requirements

• 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