Senior Staff ML Engineer, Search & Recommendation

Reddit, Inc.

Senior Staff ML Engineer responsible for enhancing Reddit's AI-driven search and recommendation systems. Collaborating across teams to build scalable solutions and mentor engineers.

Posted 4/20/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $266,000 - $372,400 per yearWebsite

Tech Stack

Tools & technologies

GoPythonPyTorchTensorflow

About the role

Key responsibilities & impact

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. You will also deploy ML models, integrate LLMs, and ensure robust monitoring and smooth product integration throughout the process.
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

Requirements

What you’ll need

10+ years of industry experience with deep expertise in large-scale search and recommendation systems.
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.
Experience working with LLM in production, including evaluation, tuning and deployment.
In-depth knowledge and experience working with lexical and semantic retrieval systems.
Proficiency in object-oriented programming (Python, Golang).
Nice to have: experience building production Agentic AI frameworks.

Benefits

Comp & perks

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

ATS Keywords

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Hard Skills & Tools

large-scale search systemsrecommendation systemsmachine learning modelsPyTorchTensorFlowLLM deploymentlexical retrievalsemantic retrievalobject-oriented programmingPython

Soft Skills

mentoringcollaborationtechnical directioninfluencingcommunication