Reddit, Inc.

Senior Staff ML Infra Engineer, Ads Ranking

Reddit, Inc.

full-time

Posted on:

Location Type: Remote

Location: United States

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Salary

💰 $266,000 - $372,400 per year

Job Level

About the role

  • Architect and significantly influence ML training/serving systems and tooling that unlock faster iteration and larger models.
  • Drive adoption and reliability of ML systems and own a portfolio of initiatives across multiple teams.
  • Improve efficiency: GPU utilization, training runtime, data loading, feature performance, and serving latency.
  • Write high-quality design docs; run design reviews; set standards for correctness, reliability, and velocity.
  • Partner cross-org on shared infra sequencing, requirements, and adoption.
  • Mentor other engineers and contribute to engineering best practices across the org.

Requirements

  • 9+ years industry experience in Software / ML Infra Engineering.
  • Strong systems background: distributed systems, data pipelines, service design, performance tuning, and operational excellence.
  • Demonstrated experience improving ML training/serving reliability at scale.
  • Can reason deeply about infra tradeoffs that affect modeling velocity and product outcomes.
  • Ability to lead through influence: drive adoption across teams and build durable interfaces/standards.
  • Demonstrated impact: leading cross-team technical initiatives and influencing technical direction.
  • Excellent communication: can explain tradeoffs clearly to both technical and non-technical stakeholders.
  • Comfortable mentoring other engineers and raising engineering quality through reviews and technical guidance.
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
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
ML training systemsML serving systemsGPU utilizationdata loadingfeature performanceperformance tuningdistributed systemsdata pipelinesservice designoperational excellence
Soft Skills
mentoringcommunicationinfluencecollaborationleadershiptechnical guidancedesign reviewsstandards settingcross-team initiativesexplaining tradeoffs