R

Reddit

Runs online communities for discussion and advice

Machine Learning Manager - Feed Relevance, Retrieval

Engineering LeadershipConfirmed live in the last 24 hours
Full-timeRemote in USARemote

About the Job

Requirements

  • At least 2 years of experience building and managing high-performing machine learning or recommender-systems teams.
  • Hands-on experience with large-scale production machine learning systems, ideally including recommender systems, retrieval models, embedding-based systems, sequence models, transformer-based architectures, or large language model-powered recommendation applications.
  • Strong understanding of recommender systems, especially candidate retrieval, embedding and indexing systems, ranking handoffs, feed personalization, exploration, content quality, and measurement strategies.
  • Ability to develop and communicate a clear technical strategy across ambiguous problem spaces, balancing user relevance, ecosystem health, system scalability, and business impact.
  • Experience developing scalable, well-designed, and responsible artificial intelligence solutions that drive business value.
  • Ability to communicate complex technical topics to diverse audiences and build strong relationships with cross-functional partners.

Responsibilities

  • Define the technical vision and long-term roadmap for Feed Retrieval, aligning large-scale recommender-system investments with Reddit’s product, ecosystem, and business objectives.
  • Translate broad Feed Relevance goals into a focused team roadmap, prioritizing tradeoffs across model quality, inventory expansion, experimentation velocity, infrastructure cost, and operational reliability.
  • Coach and support the development of the team, seeking opportunities to grow its skills and impact.
  • Oversee the design, development, and optimization of retrieval systems that source relevant, diverse, fresh, and high-quality candidates for personalized feed experiences.
  • Establish measurement, experimentation, and debugging practices to understand retrieval quality, candidate coverage, source incrementality, and downstream impact.
  • Collaborate with machine learning platform, infrastructure, ranking, safety, and product teams to build scalable, low-latency retrieval systems for future artificial intelligence-powered recommendations.
  • Maintain high standards for system performance, reliability, latency, cost efficiency, and responsible recommendation practices.
  • Work with cross-functional partners to identify opportunities, set expectations, and communicate the team’s work.
  • Partner with the recruiting team to attract, interview, and hire machine learning engineers.

Desired Qualifications

  • Experience with recommender systems, retrieval models, embedding-based systems, sequence models, transformer-based architectures, or large language model-powered recommendation applications is preferred.

About the Company

Reddit

Runs online communities for discussion and advice

Reddit runs a website and mobile app where people discuss interests, ask questions, share links, and post photos or videos. Its user-created communities, called subreddits, cover topics from news and entertainment to hobbies, local recommendations, and technical help. People reply in comment threads and vote posts or comments up or down, affecting which discussions appear prominently in each community and on their feeds. Reddit earns most of its revenue from advertising, while its Reddit Pro tools help businesses and publishers share content and track conversations about their brands. Reddit was founded in 2005 and is headquartered in San Francisco, California.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2005

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