Software Engineer · HPC / GPU

XY Qin

High-Performance Computing on GPU/CPU · Distributed Systems · ML Systems

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XYQ
San Jose, CA
Tiktok Inc. (2026–Present)
02

Edu & Exp

01/2026 – Present
TikTok Inc. · Software Engineer · San Jose, CA
• Optimize machine learning models for TikTok feed recommendation.
• Re-frame the recall stage for higher throughput and low latency.
2023 – 2024
Georgia Institute of Technology · Online Master of Computer Science (Non-degree coursework)
10/2022 – 01/2026
Viridien (CGG) Inc. · Staff Software Engineer · Houston, TX
• Resolved 200+ technical tickets, improving computing accuracy and efficiency for global clients.
• Optimized CUDA GPU kernels (memory alignment, bank-conflict resolution, kernel fusion) for full-waveform inversion / migration workloads.
• Refactored C/C++ data I/O, load balancing, and memory management across multi-GPU modules.
• Refined job scheduling strategies for master/worker nodes based on new hardware deployments.
• Benchmarked distributed GPU modules on NVIDIA H100 and AMD MI210/MI300.
• Developed a fault-tolerant MPI framework for broadcast/reduction in inversion modules.
2017 – 2022
University of Illinois at Urbana-Champaign · Ph.D. in Physical Chemistry (Minor in Computational Science & Engineering)
2017
Nankai University · B.S. in Chemistry · Tianjin, China
03

Blogs

2026
04

Selected Publications

Zenodo
2025

An Idleness- and Failure-Tolerant Pipeline Broadcast Protocol for MPI

X. Qin

A pipeline broadcast protocol for MPI designed to tolerate node idleness and failures, improving robustness for large-scale distributed workloads.

MPI Fault Tolerance HPC
J. Chem. Phys.
2023

Finite-temperature vibrational many-body perturbation theory: algebraic, second-quantized, diagrammatic derivation, and linked-diagram theorem

X. Qin, S. Hirata

Derives finite-temperature vibrational many-body perturbation theory using algebraic and second-quantized formulations, providing a diagrammatic derivation and linked-diagram theorem.

Many-Body Theory Quantum Chemistry Perturbation Theory
Molecular Physics
2021

Finite-temperature vibrational full configuration interaction

X. Qin, S. Hirata

Developed finite-temperature vibrational FCI theory to work as a numerical benchmark for thermodynamic properties and their perturbation corrections for molecular systems.

Vibrational Theory FCI Thermodynamics
J. Phys. Chem. B
2020

Anharmonic Phonon Dispersion in Polyethylene

X. Qin, S. Hirata

Applied second-order Green's function method on polyethylene to obtain anharmonic frequencies and phonon dispersion relations by self-consistently solving the Dyson equation, validated against IR/Raman and inelastic neutron scattering (INS) spectra.

Green's Function Phonon Dispersion Anharmonic Effects
Eur. J. Pharm. Biopharm.
2017

Facile fabrication of poly(acrylic acid) coated chitosan nanoparticles with improved stability in biological environments

Yukun Wu, Jing Wu, Jing Cao, Yajie Zhang, Zhe Xu, X. Qin, Wei Wang, Zhi Yuan

Prepared coated polymer composite for improvement on stability of drug particles in biological environments using poly(acrylic acid) coated chitosan nanoparticles.

Polymer Nanoparticles Drug Delivery Biocompatibility

Get in Touch

I'm always happy to chat about research, collaborations, or just say hello.

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