Rachel Peng

Engineering @BlackRock | Columbia University

New York, New York, United States

About

As an Engineer III at BlackRock, Rachel enhances Aladdin’s AI Chat by integrating various financial tools and agents, strengthening orchestration frameworks, and advancing evaluation capabilities. Rachel was a full-stack software engineer at ServiceNow’s Conversational AI team prior to joining BlackRock, where she contributed to RAG LLM reranking, hybrid search, and AI admin search config dashboard. She received her B.S. in Computer Science from Columbia University and published research on optimizing GPU energy efficiency for LLM inference.

Experience

  • AI & ML Engineer III at BlackRock
    Jul 2025 - Present · 1 yr

    AI Service, AI Platform, AI Chat Orchestration

  • ServiceNow (On-site)
    • Software Engineer II
      Mar 2025 - Jul 2025 · 5 mos

    • Software Engineer I
      Jul 2023 - Mar 2025 · 1 yr 9 mos

      Conversational AI team Projects Contributed To: RAG, LLM Re-Ranking, AI Search Admin Console, and various Enterprise-Level Search Functionalities. GHC'24

  • Research Assistant at Columbia Engineering
    Feb 2023 - Oct 2023 · 9 mos

    Sustainable computing @ARCADE Lab x IBM, supervised by Martha Kim I worked as a research assistant at the ARCADE lab and co-authored the paper: Characterizing Training Performance and Energy for Foundation Models and Image Classifiers on Multi-Instance GPUs. It's a comprehensive study on the performance-energy trade-offs across different GPU configurations, quantifying potential energy savings during the inference step in the machine learning lifecycle using NVIDIA Multi-Instance GPU (MIG) in comparison to the traditional GPU model, such as the A100.

  • Course Assistant at Columbia University
    Sep 2022 - Dec 2022 · 4 mos

    CSEE 3827 Fundamentals of Computer Systems (prof. Martha Kim)

  • Software Engineer Intern at ServiceNow
    May 2022 - Aug 2022 · 4 mos

    AI Search