Senior Machine Learning Engineer, Reddit

Ads Training Platform

Salary not provided

Tensorflow

PyTorch

Senior and Expert level

Remote from UK

Online platform for thoughts, experiences & discussions

Job no longer available

Online platform for thoughts, experiences & discussions

1001+ employees

B2CB2BPublishingContentSocial MediaCommunity

Job no longer available

Salary not provided

Tensorflow

PyTorch

Senior and Expert level

Remote from UK

1001+ employees

B2CB2BPublishingContentSocial MediaCommunity

Company mission

To empower communities, and make their knowledge accessible to all.

Job

Company

Role

Who you are

We are looking for an engineer with deep experience in infrastructure, distributed systems, and ML platform operations to help evolve and scale our training systems
5+ years in infrastructure/platform engineering or large-scale distributed systems
2+ years hands-on experience with Ray platform
Strong understanding of distributed computing principles (task scheduling, fault tolerance, state management)
Experience with distributed storage systems and large-scale data processing
Proven ability to debug and profile distributed jobs
Experience with deep learning frameworks (PyTorch, TensorFlow) is a big plus
Bonus: model optimization for distributed training, Ads ML experience

What the job involves

The Ads Training Platform pod builds and maintains the distributed training and data processing infrastructure that powers Reddit’s Ads machine learning models
We focus on enabling fast, reliable, and scalable model training across large datasets, supporting the Ads ML teams in improving ad targeting, conversion prediction, and advertiser value
Design, build, and maintain large-scale distributed training infrastructure for Ads ML models
Develop tools and frameworks on top of the Ray platform
Build tools to debug, profile, and tune distributed training jobs for performance and reliability
Integrate with object storage systems and improve data access patterns
Collaborate with ML engineers to improve model training time, efficiency, and GPU training costs.
Drive improvements in scheduling, state management, and fault tolerance within the training platform to enhance overall performance

Our take

Reddits is an online platform that hosts thousands of message board communities (known as subreddits) designed to foster authentic human connection. With more than 130,000 communities covering everything from food, entertainment and sports, to niche interests for highly specific audiences, there's virtually a space for everyone.

The platform attracts over 120 million daily users and billions of monthly page views. While these figures are smaller than those of social media giants like Facebook and X, Reddit stands out by offering easily discoverable communities where users can dive deep into virtually any topic imaginable.

Today, Reddit continues to grow its user base and expand its reach, remaining a unique hub for conversation, connection and shared interests. With its strong community-driven model and steady revenue streams, it's most definitely positioned to stay a central part of online culture for years to come.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

Top investors

57% employee growth in 12 months

Glassdoor (3.9)

Company

Funding (last 2 of 6 rounds)

Aug 2021

$410m

SERIES F

Feb 2021

$250m

SERIES E

Total funding: $1.2bn

Company benefits

Comprehensive health benefits
Flexible vacation & Reddit global days off
Family planning funds & 4+ months paid parental leave
Personal & professional development funds
Paid volunteer time off
Workspace & home office benefits

Company HQ

SoMa, San Francisco, CA

Leadership

Steve Huffman

(CEO & Founder)

After co-founding Reddit in 2005, they stepped away from the company to co-found Hipmunk, where they were the CTO for 5 years. They returned to Reddit in 2015, and have been the CEO since.

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