As a Senior Staff, you will design and build a large-scale system that powers end-to-end search relevance at scale. You’ll work across multiple areas of the stack, including query understanding, retrieval, ranking, features, measurement, LLM-based answers, RAG etc, partnering deeply with product, org leads, and other XFN to deliver reliable, high quality systems that can help Reddit Search scale to billions of users.

Key responsibilities include:

Contribute to advancing Reddit's Search and Recommendations products by designing AI-driven Search experience prioritizing seamless and delightful user experience.

Deeply understand the Reddit search product and drive the vision for the search relevance team.

Enhance core search retrieval and ranking, design and implement new search engine features, build and scale search indexes, develop and test new pipeline components.

Collaborate across disciplines and with ML, Product, Infrastructure, and DS teams at Reddit to find technical solutions to complex challenges.

Mentor and guide senior and staff engineers in the team.

Influence org-wide technical direction and partner closely with senior leadership to shape the long-term roadmap.

We are looking for someone with 10+ years of industry experience with deep expertise in large-scale search and recommendation systems. You should have a proven ability to identify key opportunities, define roadmaps and drive scalable improvement in search relevance. Strong experience in building and deploying large-scale ML models using frameworks such as PyTorch or Tensorflow is also required.

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