Jobs · Information Technology

Staff Machine Learning Engineer, Ads Measurement Modeling

Reddit, Inc. · San Francisco, CA · 2 wk ago
RemoteRemoteInformation Technology$230k–$322k/yrFull-time

Reddit is a community of communities built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet's largest sources of information.

About the role

The Ads Measurement Org is dedicated to enhancing the efficiency and user-friendliness of our advertising platform. The Measurement Modeling team owns all the Machine Learning solutions for Ads Measurement, including Identity Matching, Identity Graph, Utility Enhancement for Ads Privacy, Modeled Conversion, and new Measurement Modeling Initiatives. As a critical and complex part of Identity Modeling, we are building advanced machine learning solutions at the intersection of the ads stack, interacting with various upstream and downstream systems. This role serves critical business needs for monetization and consumers, including Measurement & Reporting, Experimentation, Personalization, Delivery, and Safety, requiring major cross-functional and cross-team/org collaborations.

We are looking for an IC5 Staff ML Engineer of Ads Identity Modeling to define the long-term direction and drive architecture evolution, ensure engineering quality, enforce best practices, lead new exploration and cross-org collaboration in modeling initiatives, and champion ML/AI innovation to utilize state-of-the-art ML technology.

Responsibilities

  • Lead the technical strategy and architecture for our company's ads identity modeling solutions and other related ads measurement models
  • Design and train advanced ML models while ensuring accuracy, scalability, and compliance with privacy requirements, managing trade-offs between complexity, latency, and prediction quality
  • Oversee end-to-end ML workflows—from data ingestion and feature engineering to model training, evaluation, and deployment—optimizing for performance and cost
  • Partner with cross-functional teams (e.g., product management, data science, platform engineering, privacy, legal) to define the roadmap and set long-term goals
  • Establish engineering best practices, code quality standards, and data governance guidelines to ensure maintainability and trustworthiness of the identity graph
  • Mentor and coach junior engineers, fostering a culture of innovation, technical excellence, and knowledge sharing across the organization

Requirements

  • 7+ years of professional software engineering experience, with at least 3+ years focused on ML-driven systems at scale
  • Demonstrated experience architecting and building ads measurement modeling solutions leveraging advanced machine learning techniques
  • Strong knowledge of various identifiers (cookies, hashed emails, phone numbers, IP addresses, user agents) and their use in identity resolution
  • Proficiency in machine learning frameworks (e.g., TensorFlow, PyTorch) and libraries for feature engineering, model training, and inference
  • Solid understanding of large-scale data processing, distributed computing, and data infrastructure (e.g., Spark, Kafka, Beam, Flink)
  • Proven technical leadership in cross-functional settings, driving architectural decisions and influencing stakeholders (product, data science, privacy, legal)
  • Excellent communication, mentoring, and collaboration skills to align teams on a long-term vision for identity resolution

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

Pay

The base salary range for this position is $230,000—$322,000 USD. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission.

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