Internet
StaffMachineLearningEngineer,Embeddings
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“Staff Machine Learning Engineer, Embeddings at Reddit. Skills: Staff Machine Learning Engineering, Large-scale ML Systems, Deep Learning Architectures, Recommendation Systems, Personalization, Scalable Model Design, Distributed Training, Real-time Inference. Own the technical direction for large-scale machine learning models. Guide the development of advanced deep learning architectures and high-impact ML systems”
What You'll Achieve.
Enhance personalization and recommendation quality across Reddit; Ensure efficient, reliable deployment of ML models in production; Achieve low-latency inference and high throughput for embeddings
Industry & Context.
What They're Looking For.
Must Have
8+ years of experience in machine learning engineering, focus on large-scale ML systems and recommendation or personalization systems, Expertise in modern deep learning architectures, including sequence models and foundational models, Deep understanding of complex multi-entity relationships in machine learning applications and how they are modeled in large-scale systems, Proven ability to design, implement, and optimize scalable ML architectures, from distributed training to real-time inference, software engineering skills in Python, C++, or similar languages, experience in ML infrastructure, high-performance computing, and cloud-based ML pipelines, Demonstrated leadership in driving ML strategy, mentoring engineers, and influencing cross-functional teams, Experience with A/B testing, model evaluation frameworks, and real-time feedback loops in large-scale production systems, Excellent communication skills
Nice to Have
Knowledge of Kubernetes
What You'll Do.
Own the technical direction for large-scale machine learning models
Guide the development of advanced deep learning architectures and high-impact ML systems
Partner with leadership to define ML roadmaps
Drive innovation in scalable model design and training approaches
reliable deployment of ML models in production
Architect and lead the development of next-generation
large-scale machine learning techniques
Define and execute the ML strategy
Identify opportunities to enhance personalization and recommendation quality across Reddit
Lead research initiatives on scalable machine learning systems and real-time model adaptation
Bring cutting-edge advancements into production
Partner with ML infrastructure teams to build high-performance
distributed training systems
Establish and optimize real-time serving architectures for large-scale embeddings
Collaborate cross-functionally with teams in Feed Ranking
Content Understanding
Integrate ML models into Reddit’s key AI-driven systems
Stay at the forefront of AI research
Evaluate and introduce new modeling paradigms
Drive technical discussions
Present findings to leadership
Contribute to long-term ML planning and decision-making
How You'll Work.
Team & Collaboration
Partner with leadership to define ML roadmaps; Partner with ML infrastructure teams to build high-performance, distributed training systems; Collaborate cross-functionally with teams in Feed Ranking, Ads, Content Understanding, and Core ML; Mentor and guide senior and mid-level ML engineers; Influence cross-functional teams
Communication Scope
Excellent communication skills; Ability to effectively present complex ML concepts to technical and non-technical stakeholders
Full Job Description
Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. The LS Embedding Machine Learning team is at the forefront of building highly expressive machine learning models that power Reddit’s recommendation systems. We go beyond standard retrieval and ranking architectures, leveraging modern deep learning approaches and scalable model designs to enhance personalization across Reddit’s ecosystem. Our work impacts content discovery, user engagement, and platform growth at a massive scale. How You'll Have Impact As a Staff Machine Learning Engineer, you will own the technical direction for large-scale machine learning models, guiding the development of advanced deep learning architectures and high-impact ML systems. You will partner with leadership to define ML roadmaps, drive innovation in scalable model design and training approaches, and ensure efficient, reliable deployment of ML models in production. This role offers an opportunity to influence key AI-driven systems across Reddit while mentoring and uplifting the team’s technical capabilities. What You’ll Do Architect and lead the development of next-generation, large-scale machine learning techniques. Define and execute the ML strategy, identifying opportunities to enhance personalization and recommendation quality across Reddit. Lead research initiatives on scalable machine learning systems and real-time model adaptation, bringing cutting-edge advancements into production. Partner with ML infrastructure teams to build high-performance, distributed training systems that efficiently scale across multiple GPUs and cloud environ
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