Staff Software Engineer, Onboarding

Reddit is a community of communities, built on shared interests and trust. The Onboarding team is responsible for creating streamlined and delightful first experiences for new users, significantly impacting user retention and engagement.

Responsibilities:

• Define and accelerate the backend architecture for a newly onboarded user: the signal-collection systems that learn who a new Redditor is, the personalization pipelines that turn those signals into a tailored first feed, and the experimentation infrastructure that lets us iterate on the moments that decide whether someone becomes a lifelong user
• Help the team internalize that operating model: what it means to build for learning, how to balance velocity with reliability, and how to stay rigorous when moving fast
• Build and maintain deep partnerships with the engineering teams whose surfaces directly shape a newly onboarded user's experience: Relevance, Feeds, Notifications, and beyond
• Establish the instrumentation and experimentation foundations that let the team run rigorous A/B tests on growth levers
• Serve as the engineering voice in XFN partnerships with Product, Design, Data Science, and other Consumer platform teams
• Advocate for reliability, scalability, and maintainability across a complex, high-scale distributed system

Requirements:

• At least 7 years of experience
• A strategic partner, not just a technologist
• You're a mentor who helps other engineers level up
• You're deeply data-informed and logical
• Comfortable with growth-team ambiguity
• A focus on clear, transparent communication
• Experience with ranking, recommendations, and personalization