Sizheng Li
Software Development Engineer at Amazon Web Services (AWS)
Greater Boston United States
Summary
👤
Senior🎓
Top SchoolSizheng Li is a software development engineer with nearly a decade of professional experience and a PhD-trained background in civil engineering, now building cloud storage capacity and utilization features at AWS FSx. He brings 10+ years of C++ expertise, a strong foundation in algorithms and data structures, and a track record of delivering high-quality production models for earthquake and disaster simulation at AIR Worldwide. Sizheng combines research-grade modeling experience—authoring complex multi-hazard simulation code—with production engineering rigor, including parallel computing and QA for large-scale loss engines. He contributes to scientific open-source projects like SpECTRE, where he has extended core tagging and coordinate evolution logic for astrophysics codes, showing an uncommon bridge between domain science and systems-level software. Collaborative and detail-oriented, he focuses on clean, testable code and measurable delivery in distributed and high-performance environments.
9 years of coding experience
13 years of employment as a software developer
Doctor of Philosophy (Ph.D.), Civil Engineering/Civil Infrastructure Systems, Doctor of Philosophy (Ph.D.), Civil Engineering/Civil Infrastructure Systems at University of DelawareMaster of Engineering (M.Eng.), Structural Engineering, Master of Engineering (M.Eng.), Structural Engineering at Beijing University of Technology
English, Chinese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (5)
c-language10
cprogramming-language10
astrophysics10
numerical-methods9
unit-testing9
Programming languages (3)
Github contributions (5)
sxs-collaboration/spectre
Jan 2021 - Sep 2022
SpECTRE is a code for multi-scale, multi-physics problems in astrophysics and gravitational physics.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:58 reviews, 12 commits, 28 PRs in 1 year 8 months
Contributions summary:Sizheng's primary contributions involve adding and modifying tags, which are used to manage data and variables within the SpECTRE code. They initialized new tags and unit tests, indicating a focus on expanding the system's capabilities. Furthermore, they worked on initializing and evolving inertial coordinates and corresponding gauge transformations, suggesting involvement in core physics calculations within the astrophysics and gravitational physics domain. They also worked on refactoring or renaming the GaugeC, GaugeD, GaugeOmega tags.
pythonproblemshierarchicalsimulationreduction
Sizheng-Ma/qnm_filter
Jan 2023 - Mar 2025
Ringdown analysis with rational filters.
Contributions:26 reviews, 99 PRs, 301 pushes in 2 years 3 months
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