Job Overview
Location
Remote - Ontario, Canada
Job Type
Full-time
Category
Machine Learning Engineer
Date Posted
May 14, 2026
Full Job Description
đź“‹ Description
- • As a Senior Machine Learning Engineer at Reddit, you will design and build production ML systems that power core experiences across the platform, including personalized recommendations, search, ranking, intelligent advertising systems, content and user understanding, and large-scale ML pipelines—directly influencing user experience, advertiser value, and business outcomes at internet scale.
- • You will own the full ML lifecycle: from problem definition and feature engineering to training, evaluation, deployment, and monitoring; build scalable data and model pipelines with strong reliability and observability; work with large-scale datasets to improve ranking, recommendations, and prediction systems; partner cross-functionally with Product, Data Science, Infrastructure, and Engineering teams; improve system performance across latency, throughput, and model quality metrics; research and apply state-of-the-art ML techniques including deep learning, transformers, graph neural networks, and LLM-driven experiences; and contribute to technical strategy, architecture, and long-term ML roadmap.
- • Reddit is a community of communities built on shared interests, passion, and trust, hosting over 100,000 active communities and approximately 126 million daily active unique visitors—making it one of the internet’s largest sources of authentic conversations. Machine learning sits at the heart of how millions discover, connect, and engage with content across the platform.
- • You will work on high-impact systems that operate at massive scale, tackle real-world ML problems in discovery, relevance, and monetization, and help shape the future of Reddit’s ecosystem through end-to-end ML solutions—from research to production deployment—while advancing your expertise in applied AI, LLMs, and large-scale systems engineering.
🎯 Requirements
- • 3-5+ years of experience building, deploying, and operating machine learning systems in production
- • Strong programming skills in Python, Java, Go, or similar languages with solid software engineering fundamentals
- • Hands-on experience with modern ML frameworks such as PyTorch or TensorFlow
- • Experience designing scalable ML pipelines, data processing systems, and model serving infrastructure
- • Ability to work cross-functionally and translate ambiguous product or business problems into technical solutions
- • Experience improving measurable metrics through applied machine learning
🏖️ 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
Skills & Technologies
About Reddit Inc.
Reddit is a social media platform where users submit, vote, and comment on content organized into topic-based communities called subreddits. Founded in 2005, it offers forums for news, hobbies, advice, and discussion, enabling real-time conversations and content ranking through upvotes and downvotes. With millions of daily active users globally, Reddit hosts diverse communities moderated by volunteers, supports multimedia posts, and provides advertising and premium membership options. The platform emphasizes user anonymity, community governance, and crowdsourced information, making it a hub for niche interests, viral content, and public discourse. Reddit went public in 2024 and is headquartered in San Francisco.
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