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Staff Machine Learning Engineer, Ads Targeting

Reddit

$230,000 - $322,000
Nov 21, 2025
Remote, US
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Reddit is looking to automate targeting and deliver the most relevant audiences to advertisers under the right context with ML-driven solutions for their Ads Targeting ML team.

Requirements

  • Tech lead experience in a product ML team driving the research and technical direction to improve business outcomes using applied ML
  • Experience with ads retrieval modeling, ranking or recommendation systems
  • Experience with deep learning models for retrieval (two tower, GNNs, transformers, LLMs)
  • 5+ years of end-to-end experience of training, evaluating, testing, and deploying machine learning models
  • 2+ years of experience building machine learning models with Tensorflow/Pytorch
  • Experience with large scale data processing & pipeline orchestration tools like Spark, Dataflow, Kubeflow, Airflow, BigQuery
  • Experience working with nearest-neighbor search systems is a big plus

Responsibilities

  • Own end-to-end design and execution of ML-based targeting products like auto targeting, user lookalikes etc.
  • Drive research direction and technical roadmap for complex projects, lead day to day project execution, and contribute meaningfully to team vision and strategy
  • Research, implement, test, and launch new model architectures for retrieval using deep learning (GNNs, transformers, two tower models, LLMs) with a focus on improving advertiser outcomes
  • Own offline & online experimentation of ML models for improving targeting products
  • Work on large scale data systems, and product integration
  • Collaborate closely with multiple stakeholders cross product, engineering, research and marketing

Other

  • Be a thought leader for the team and collaborate closely with product managers and cross-functional partners to develop and prioritize the roadmap based on data analysis, industry research and product research
  • Provide mentorship to junior MLEs
  • Experience working with cross functional stakeholders across research, product & infrastructure to productize ML research
  • Tech lead experience in a product team is strongly preferred
  • Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve.