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Posted May 30, 2026

Senior Staff Software Engineer, Indexing – Retrieval Platform

Job Description: • Lead the technical strategy, architecture, and implementation of Reddit’s next-generation ML Indexing & Retrieval engine, integrating capabilities across lexical and vector indexing, low-latency retrieval, and emerging GenAI applications. • Partner closely with product engineers across Content Understanding, Search, Feeds, Ads, Growth, and Safety to deliver high-quality experiences. • Define best practices for observability, reliability, and operational excellence in large-scale distributed systems. • Mentor and guide engineers in designing scalable infrastructure and adopting robust DevOps and SRE principles. • Collaborate with infrastructure, and ML teams to ensure the platform evolves to meet the needs of Reddit’s growing user base and diverse content ecosystem. Requirements: • 10+ years of experience in software engineering, specializing in Indexing and Retrieval systems. • 3+ years in technical leadership, architecting and scaling distributed systems in production environments. • Deep expertise in large-scale data platforms, including batch indexing and stream processing. • Proven experience designing and operating large-scale, low-latency retrieval services. • Expertise in lexical and vector search retrieval technologies, such as Milvus, Vespa, or Elasticsearch. • Skilled in designing cloud-native architectures and managing containerized workloads using Kubernetes and AWS/GCP. • Adept at translating complex technical challenges into clear, actionable strategies. • Strong communicator and mentor who leads through collaboration, influence, and technical excellence. Benefits: • Comprehensive Healthcare Benefits and Income Replacement Programs • 401k with Employer Match • Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support • Family Planning Support • Gender-Affirming Care • Mental Health & Coaching Benefits • Flexible Vacation & Paid Volunteer Time Off • Generous Paid Parental Leave