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Staff Machine Learning Engineer, Notifications Relevance

230k – 322kUnited StatesRemote8+ YOE
Summary

Technical leader for Reddit's Notifications Relevance ML systems, driving large-scale recommendation systems spanning retrieval, ranking, budget optimization, and LLM-powered experiences.

About the role

What You’ll Do

  • Contribute to advancing Reddit's growth by designing and implementing content discovery algorithms that prioritize a seamless and highly personalized user experience.
  • Deeply understand the Reddit Notifications product and drive the vision for the notifications relevance team.
  • Enhance core recommendation capabilities, including candidate retrieval, ranking models, and budgeting optimization, while designing and testing new pipeline components.
  • Deploy ML models, integrate LLMs, and ensure robust monitoring and smooth product integration throughout the process.
  • Serve as the primary ML domain expert, deploying state-of-the-art models at scale, driving architectural decisions, and ensuring robust monitoring and smooth product integration across the engineering organization.
  • Collaborate across disciplines and with ML, Product, Infrastructure, and DS teams at Reddit to find technical solutions to complex challenges.

Who You Are

  • 8+ years of industry experience with deep expertise in large-scale recommendation systems, notifications experience preferred.
  • Proven ability to identify key opportunities, define roadmaps and drive scalable improvement in notifications relevance.
  • Strong experience in building and deploying large-scale ML models using frameworks such as PyTorch or Tensorflow.
  • Experience working with LLM in production and utilizing generative AI to augment recommendation systems.
  • Proficiency in object-oriented programming (Python, Golang).
  • Big Plus: experience with state of the art model architectures.
  • Big Plus: experience building production Agentic AI frameworks.

Benefits

  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k with Employer Match
  • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Paid Volunteer Time Off
  • Generous Paid Parental Leave
Skills
PyTorchTensorFlowPythonGolangLarge Language ModelsRecommendation SystemsMachine LearningGenerative AIModel DeploymentAgentic AI
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