Senior Machine Learning Engineer, Ads Foundational Representations

Reddit is a community of communities and is seeking a Senior Machine Learning Engineer for its Ads Foundational Representations team. The role involves full-cycle execution of machine learning projects, focusing on developing embedding models and collaborating with cross-functional teams to enhance the relevance of ads on the platform.

Responsibilities:

• Developing new or iterating on existing embedding models for advertising use cases, ranging from aggregation pipelines to two-tower architectures and sequence models
• Working with local and 3rd-party LLMs/VLMs: extract representations, develop evaluation methodologies, prompt tune and fine-tune large models to build state-of-the-art embeddings
• Building data processing and inference pipelines for the models we develop
• Qualitative and quantitative evaluation of the various features we develop, end-to-end experimentation from internal benchmarks to downstream recommender system offline metrics to online experiments
• Ensuring the reliability, scalability, and performance of the ML systems by writing automated tests, monitoring performance, and implementing best practices for model management
• Participating in modeling and coding reviews: You will review work by other team members and provide feedback to ensure that it meets the team's standards for quality and performance
• Collaborating with cross-functional teams to understand business requirements and translate them into technical solutions