Ziqi Liu

Incoming ML Acceleration Engineer @ Apple

Pittsburgh, Pennsylvania, United States

About

Thinking about compilers.

Experience

  • ML Acceleration Engineer @ Apple at Apple
    Jan 2026 - Present · 6 mos

  • Teaching Assistant - 15418 at Carnegie Mellon University
    Aug 2025 - Jan 2026 · 6 mos

    Teaching students about CUDA, OpenMP, and MPI.

  • Software Dev Engineer Intern - Compiler at Annapurna Labs
    May 2025 - Sep 2025 · 5 mos

  • Carnegie Mellon University (3 yrs 1 mo)
    • Teaching Assistant (15411 - Compiler Design)
      Jan 2025 - May 2025 · 5 mos

      • Helping student write a C0 compiler. • Teach classic compiler analyses and optimizations. • Maintain autograder using AWS ECS.

    • Research Assistant
      Jan 2024 - Jan 2025 · 1 yr 1 mo

      Conducting research in optimizing parallel performance of LazyD compiler developed in C++ LLVM framework. Implemented LLVM analysis and transformation passes to assist parallel construct lowering. Instrumented and profiled executables to investigate parallel performance bottlenecks. Extensive experience with LLVM in-tree and external optimization passes, legacy and new pass managers, and source-level debug metadata.

    • Research Assistant
      May 2022 - Jan 2025 · 2 yrs 9 mos

      I worked on improving quantifier elimination problem in the field of Logical Foundations of Cyberphysical System.

  • Research Assistant at Carnegie Mellon University
    Jun 2021 - Dec 2021 · 7 mos

    Worked on Life at CMU smartphone usage dataset to build depression prediction model. Perform cluster analysis on data to capture activity patterns in participants groups.