Reddit, Inc. · 3 hours ago
Senior Machine Learning Engineer, ML Training Platform
United States
Full-time
Remote
Senior Level
$217K/yr - $303K/yr
5+ years expReddit is a community of communities built on shared interests and trust, and they are seeking a Senior Machine Learning Engineer for their Machine Learning Platform team. The role involves architecting and maintaining foundational ML infrastructure to support various applications, including recommendations and content discovery.
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Responsibilities
Lead the building, testing, and maintenance of ML training infrastructure at Reddit
Play a pivotal role in designing, building, and optimizing the infrastructure and tooling required to support large-scale machine learning workflows
Evolve the MLE experience, from provisioning interactive GPU environments through large-scale training, supporting on-demand and self-service workflows
Kubernetes Automation: Write custom Kubernetes Controllers and Operators to manage the lifecycle of interactive Jupyter workspaces and long-running ML training jobs, handle auto-idling, and ensure fault tolerance
GPU Orchestration: Work with the underlying compute team to ensure MLEs have efficient access to training hardware resources and handle resource contention gracefully
Developer Experience (DevX): Treat internal MLEs as your customers. Conduct user research, reduce friction in the 'Idea-to-Prototype' loop, and standardize software environments (Docker images, Python dependency management)
Qualification
Required
5+ years of software engineering experience, with a focus on Platform Engineering, ML Infrastructure, or Backend Systems
Deep Kubernetes Expertise: You know K8s beyond just 'deploying pods.' You understand CRDs, Controllers and the Operator pattern
Jupyter Ecosystem Knowledge: Experience customizing JupyterHub, JupyterLab extensions, or building similar interactive computing platforms
Strong Coding Skills: Proficiency in Python (for the ML ecosystem) and Go (for Kubernetes controllers/infrastructure tooling)
GPU Experience: Hands-on practice with CUDA environments, GPU virtualization/containerization, and doing it all within Kubernetes
Cloud Provider Experience: Familiarity with both managed ML offerings (Vertex AI, Sagemaker, etc) and building custom ML components in AWS and/or GCP
Experience working with distributed training frameworks, including Ray and Kubernetes
Comfortable with distributed systems, big data (Petabyte scale) and data-intensive systems
Strong focus on scalability, reliability, performance, and ease of use. You are an undying advocate for platform users and have a deep intuition for the machine learning development lifecycle
Strong organizational & communication skills
Benefits
Comprehensive Healthcare Benefits and Income Replacement Programs
401k Match
Family Planning Support
Gender-Affirming Care
Mental Health & Coaching Benefits
Flexible Vacation & Reddit Global Days off
Generous paid Parental Leave
Paid Volunteer time off
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
2026-01-22
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2026-01-21
2026-01-16
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