Principal Machine Learning Engineer, Ads Measurement



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Software Engineering
Posted on Thursday, January 18, 2024

The Ads Measurement Org is dedicated to enhancing the efficiency and user-friendliness of our advertising platform. We specialize in privacy enhancing technologies, identity resolution, and modeled conversions.

We are looking for a hands-on software engineering leader with machine learning background, familiar with the end to end Ads systems, experienced with Ads privacy and PETs, capable of leading across different engineering and XFN organizations, as well as willing to get their hands dirty and solves problems when the team lacked the expertise. As a diverse group of software engineers, product managers, data scientists, and ads experts, we are excited for you to join our team!

Minimum Qualifications:

  • Candidate is a technical leader capable of creating and aligning on PET visions to solve challenges for at least the next 2+ years.
  • Candidate advocates for privacy when delivering Ads performance goals by working across job functions (product, engineering, privacy, legal, etc.) across the company.
  • Candidate is an expert in Ads Measurement and PETs such as aggregation and anonymization, K-anonymity, differential privacy
  • Candidate’s PET experience spans across multiple Ads domains such as Signals, Measurement, Optimization, Delivery, Targeting, Ranking, Bidding, etc. They are capable of building PET solutions that are end-to-end across the entire Ads system.
  • Candidate is familiar with Ads privacy (GDPR, CCPA, ePD, ATT, etc.) and is experienced with evolving the Ads stack to meet the privacy needs when developing PETs.
  • Candidate has a track record of delivering high Ads performance post signal loss.
  • Candidate is an individual contributor capable of designing, implementing, testing, and launching complex product and infrastructure changes across the entire Ads stack.
  • Candidate can deliver through others as well as doing hands-on work.


  • Lead projects from concept, design, implementation, to rollout, ensuring the highest quality and performance.
  • Identify opportunities to enhance Ad Privacy and PET capabilities by diving deep into our platform and understanding the company priorities as well as the needs of our advertisers.
  • Design and develop applied machine learning models for modeled conversions, identity matching, and privacy enhancing technologies, from ideation to production deployment.
  • Collaborate with data scientists and backend software engineers
  • Mentor staff engineers and leaders, share industry knowledge, and contribute to the technical growth of the team.
  • Conduct A/B tests and experiments to iterate and fine-tune algorithms and models.
  • Stay updated on state-of-the-art algorithmic techniques and recognize promising innovations, adapting them to Reddit's unique platform and community.


  • Comprehensive Healthcare Benefits
  • 401k Matching
  • Workspace benefits for your home office
  • Personal & Professional development funds
  • Family Planning Support
  • Flexible Vacation (please use them!) & Reddit Global Wellness Days
  • 4+ months paid Parental Leave
  • Paid Volunteer time off

Pay Transparency:

This job posting may span more than one career level.

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. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/.

To provide greater transparency to candidates, we share base pay ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below.

The base pay range for this position is:
$260,800$365,100 USD

This job is no longer accepting applications

See open jobs at Reddit.