Senior Staff Machine Learning Systems Engineer, Indexing & Retrieval Search

What you'll do

• Lead the development and implementation of Reddit’s next-generation ML Indexing & Retrieval engine.
• Define best practices for observability, reliability, and operational excellence in large-scale systems.
• Mentor engineers in designing scalable infrastructure and adopting robust DevOps principles.
• Collaborate with product engineers to deliver high-quality experiences across various applications.
• Ensure the platform evolves to meet the needs of Reddit’s growing user base and diverse content ecosystem.

What we're looking for

• 10+ years of software engineering experience in Indexing and Retrieval systems.
• 3+ years of technical leadership, architecting and scaling distributed systems.
• Deep expertise in large-scale data platforms with batch indexing and stream processing.
• Proven experience designing and operating low-latency retrieval services.
• Expertise in lexical and vector search technologies like Milvus, Vespa, Elasticsearch.
• Skilled in cloud-native architectures and managing containerized workloads using Kubernetes.