Thomas Chang

Vice President of Engineering, Query

San Francisco Bay Area

About

Seasoned software engineering leader in building scalable data management platforms. Excited about processing, managing, protecting, querying massive amounts of real-world data in a distributed system.

Experience

  • Vice President of Engineering at MongoDB
    Dec 2023 - Present · 2 yrs 7 mos

    I lead query engineering in MongoDB Core Server R&D. The Query Engineering team builds the query optimizer, the execution engine and integration with Atlas full-text Search, Vector Search and Voyage AI. The team has been evolving and improving MongoDB's key differentiators, including the Document Model and OLTP query performance.

  • Engineering Manager at Google
    Feb 2021 - Dec 2023 · 2 yrs 11 mos

    Leading Query Processing and Database Performance teams in the AlloyDB Engineering

  • Engineering Director at Rubrik, Inc.
    Apr 2017 - Jan 2021 · 3 yrs 10 mos

    Rubrik built the world’s first cloud data management platform that delivers data protection, search, analytics, compliance, and copy data management to hybrid cloud enterprises. Recover, manage, and secure your data – anywhere, anytime. I lead a team of talented managers and engineers in building large-scale systems to ingest from enterprise ecosystems into the Rubrik data platform. Exciting challenges include live protection and instant recovery of mission-critical databases like Oracle and petabyte-scale storage systems. My team specializes in optimal orchestration of data movements between data centers and multiple clouds in a scalable and fault-tolerant manner.

  • Oracle (19 yrs)
    • Director, Oracle Labs Advanced Database Development
      Dec 2012 - Apr 2017 · 4 yrs 5 mos

      Advanced Database Development at Oracle Labs Working on highly parallel in-memory database technologies leveraging novel computer architectures. Leading the development of a massively scalable distributed query engine for SQL analytics.

    • Senior Development Manager, Search Development
      Jun 2005 - Nov 2012 · 7 yrs 6 mos

      - Secure Enterprise Search development - Deployment of search technologies internally and on customer sites - Integrating search in the Oracle Cloud. - Database kernel development in full-text inverted indexes

    • Principal Member of Technical Staff and Development manager, Oracle Database Kernel
      May 1998 - Jun 2005 · 7 yrs 2 mos

      - Database kernel development in areas of SQL Language, Abstract Types and Large Object support.