Reddit, Inc. · 1 day ago
Senior Staff ML Infra Engineer, Ads Ranking
United States
Full-time
Remote
Senior Level, Lead/Staff
$266K/yr - $372K/yr
9+ years expReddit is a community of communities and is seeking a Senior Staff ML Infra Engineer to join their Ads Ranking Org. This role focuses on enhancing Reddit’s ML-powered ad ranking systems through improved GPU-first training and serving, as well as reliability and automation.
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Responsibilities
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
Qualification
Required
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
Company
Reddit, Inc.
Reddit is the heart of the internet, where millions of people get together to talk about any topic imaginable.
1001-5000 employees
H1B Sponsorship
Reddit, Inc. has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (99)
2024 (63)
2023 (76)
2022 (70)
2021 (68)
2020 (39)
Funding
Current Stage
Public CompanyTotal Funding
$1.33BKey Investors
FidelityVy CapitalTencent
2024-03-21IPO
2021-08-12Series F· $410M
2021-02-08Series E· $367.95M
Leadership Team
Steve Huffman
CEO
Chris Slowe
CTO
Recent News
Search Engine Journal
2026-01-07
2026-01-07
Company data provided by crunchbase