Reddit

Senior Machine Learning Engineer focused on GenAI Security at Reddit. The role involves building and improving security-focused ML models for Reddit's GenAI traffic, covering the full ML lifecycle from problem definition to retraining. Key responsibilities include developing models for prompt injection, jailbreak attempts, data exfiltration, and unsafe model behavior, as well as establishing strong ML practices and MLOps workflows.

Senior Staff ML Engineer to lead Reddit's user understanding initiative, building a unified user representation using LLMs and foundation models to power platform personalization across feeds, search, notifications, and ads. This role involves setting technical direction, designing and implementing core user models, and ensuring scalability and reliability.

Reddit is seeking a Senior Staff Machine Learning Engineer to lead the vision, strategy, and architecture for their large-scale GenAI Platform. This role involves defining the platform's operating model, driving core capabilities like a unified LLM Gateway, RAG systems, and agentic workflows, and establishing LLMOps standards for scalability, reliability, and developer experience.

Senior Software Engineer to lead the development of a large-scale GenAI Platform at Reddit, focusing on LLM Gateway, RAG applications, agentic workflows, MLOps/LLMOps, and establishing best practices for observability and governance.

Staff Machine Learning Engineer at Reddit focused on building and deploying large-scale ML systems for consumer products, including recommendations, search, and LLM/GenAI capabilities. The role involves end-to-end ownership from ideation to production, technical strategy, and collaboration with cross-functional teams.

Staff Data Scientist for Reddit's Ads team, focusing on measurement, identity, and signal quality. This role involves developing probabilistic models for identity resolution, advancing lift methodologies and experimentation, maximizing predictive performance through signal incorporation, and defining ground truth and evaluation frameworks. The position requires deep understanding of the ads ecosystem and expertise in measurement, identity, or predictive modeling, with a strong emphasis on statistical rigor and cross-functional influence.

Staff Data Scientist role at Reddit focused on advancing the intelligence powering the advertiser experience, specializing in measurement, identity, and signal quality. The role involves designing probabilistic models for identity resolution, advancing lift methodologies and experimentation, maximizing signal for predictive performance, and defining ground truth and evaluation frameworks. It requires deep understanding of the ads ecosystem and expertise in measurement, identity, or predictive modeling.