Technology
StaffMachineLearningSystemsEngineer,EmbeddingsPlatform
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optimal for Lead candidates.
“Staff Machine Learning Systems Engineer, Embeddings Platform at Reddit. Skills: large-scale ML systems, recommendation systems, personalization systems, deep learning architectures, scalable model design. 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 r”
What You'll Achieve.
Enhance personalization across Reddit’s ecosystem. Impacts content discovery, user engagement, and platform growth at a massive scale.
Industry & Context.
system design; distributed training; real-time inference; scalable ML architectures
In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors.
What They're Looking For.
Must Have
8+ years of experience in machine learning engineering, with a 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, with 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 testing, model evaluation frameworks, and real-time feedback loops in large-scale production systems. Excellent communication skills, with the ability to effectively present complex ML concepts to technical and non-technical stakeholders.
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 environments.
Establish and optimize real-time serving architectures for large-scale embeddings, ensuring low-latency inference and high throughput.
Collaborate cross-functionally with teams in Feed Ranking, Ads, Content Understanding, and Core ML to integrate ML models into Reddit’s key AI-driven systems.
Mentor and guide senior and mid-level ML engineers, fostering a culture of excellence, innovation, and knowledge sharing.
Stay at the forefront of AI research, evaluating and introducing new modeling paradigms to keep Reddit’s ML ecosystem cutting-edge.
Drive technical discussions, present findings to leadership, and contribute to long-term ML planning and decision-making.
How You'll Work.
Team & Collaboration
Collaborate cross-functionally with teams in Feed Ranking, Ads, Content Understanding, and Core ML to integrate ML models into Reddit’s key AI-driven systems.
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 Embedding Machine Learning Platform 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 e
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