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Nishitha Thummala - AI/ML Engineer in San Francisco, CA

Nishitha Thummala

Mid-level AI/ML Engineer specializing in LLMs, RAG, and scalable inference

PerplexityUniversity of Nebraska OmahaSan Francisco, CA6 Years ExperienceMid LevelWorks On-Site

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About

Backend/retrieval-focused engineer with production experience at Perplexity building a large-scale real-time Q&A system using retrieval-augmented generation, emphasizing low-latency, high-quality answers through ranking, context optimization, and caching. Also has orchestration experience from both product-facing LLM pipelines and large-scale infrastructure workflows at Meta, and has partnered with non-technical stakeholders to align AI trade-offs with business goals.

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Key Strengths

  • Built and optimized production RAG pipeline for real-time Q&A at scale
  • Strong trade-off management between accuracy, latency, and cost in LLM systems
  • Improved retrieval quality via ranking and query-document matching to reduce hallucinations
  • Reliability engineering for multi-step AI workflows (retries, fallbacks, timeouts)
  • Pragmatic evaluation approach using component tests plus end-to-end tests with production query replays
  • Effective cross-functional communication translating business goals into technical changes

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Experience

AI/ML EngineerPerplexity AI · Jan 2025 – Present
Software Engineer - Machine LearningMeta · Feb 2024 – Jan 2025
Software EngineerAccenture · Jun 2020 – Jul 2023

Education

University of Nebraska Omahamaster, Computer Science
Keshav Memorial Institute of Technologybachelor, Computer Science

Languages

English

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Nishitha ThummalaMid-level AI/ML Engineer specializing in LLMs, RAG, and scalable inference