5 hours ago
Base Salary
$266k - $372k/yr
Responsibilities
- Define Reddit’s unified user understanding framework, including embeddings, tags, attributes, and LLM-based user profiles.
- Lead the design and implementation of large-scale user representation and personalization models across Feeds, Notifications, Search, and Ads.
- Apply LLMs and foundation models to dynamic user profiles, intent inference, semantic reasoning, and context-aware personalization.
- Build and integrate scalable embedding storage and retrieval, feature pipelines, APIs, low-latency serving, and MLOps components.
- Drive cross-team experimentation, adoption, and measurable impact with product, infrastructure, ranking, and ML teams.
- Set technical direction, lead design reviews, mentor senior and staff engineers, and establish reliable engineering practices.
Requirements
- At least 10 years of experience building and scaling production-grade ML systems.
- Deep expertise in user modeling, large-scale representation learning, recommender systems, behavioral modeling, or related ML approaches.
- Track record of leading ambiguous, high-impact initiatives from concept through production and shaping technical direction.
- Experience or strong intuition applying LLMs or foundation models to evolve existing systems.
- Ability to design end-to-end ML systems spanning data, training, evaluation, serving, and adoption.
- Strong cross-functional influence across product, infrastructure, and ML teams.
- Experience mentoring senior engineers, leading design reviews, and establishing best practices for reliable, scalable systems.
- Ability to balance quality, latency, cost, and safety in large-scale user-facing systems.
Benefits
- Comprehensive healthcare benefits and income replacement programs.
- 401(k) with employer match.
- Global benefits supporting workspace, professional development, caregiving, and lifestyle needs.
- Family planning support, gender-affirming care, and mental health and coaching benefits.
- Flexible vacation and paid volunteer time off.
- Generous paid parental leave.
- The posting is tagged as remote (#LI-remote).
Categories
About Reddit
Reddit builds a social news and discussion platform organized into user-created forums (“subreddits”) for consumers, creators, and communities. It monetizes primarily through advertising tools for brands and self-serve advertisers, plus a Premium subscription; developers can access data via its API. Founded in 2005 and headquartered in San Francisco, Reddit became a public company on the NYSE in 2024 and hosts over 100,000 active communities.