Role overview

Senior Staff Software Engineer, Indexing & Retrieval Platform

Requirements and responsibilities

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What You’ll Do

  • 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.

Who You Might Be:

  • 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.

Who You Might Be:

  • 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
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FocusMachine LearningRole area
Seniority signalLeadCandidate level
StackAWS, Docker, GCPPrimary skills
Location1 accepted countryEligibility

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