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About Me

Here is Siming Deng (Larry Deng).

I am a graduate student in the Department of Electrical and Systems Engineering (ESE) at the Penn Engineering of the University of Pennsylvania. Currently, I build agentic AI tools and infrastructure for iPhone hardware testing, spanning agent runtimes (multi-agent orchestration and tool use), on-device inference with Apple MLX, closed-loop test optimization, and Vision Transformers for distribution diagnosis. Broadly, my interests lie at the intersection of AI infrastructure, applied ML, and hardware systems. Prior to joining Penn, I gained valuable research experiences as a Research Assistant at Shenzhen University advised by Dr. Jun Zhang. My work focused on Nonparametric Statistics, Distortion Measurement Error Models, and Large Sample Theory. I developed and analyzed advanced statistical methods, conducted large-scale simulations, and applied these techniques to real-world datasets, resulting in five SCI publications.

Work Experience

Apple
Software Engineer | Apple Inc.
Jan. 2026 - Present
Developed AI agent tools for iPhone hardware testing, enhancing automated diagnostics workflows and improving large-scale test efficiency.
UPenn
Research Assistant | University of Pennsylvania
Nov. 2025 - Jan. 2026
ViT-driven image geolocation.
SF Express
Software Engineer | SF Express
May. 2025 - Jul. 2025
Delivered microservice modules for the order management system.
Bank of China
Software Engineer | Bank of China
Jul. 2024 - Sep. 2024
Involved in the deployment and fine-tuning of large language models in internal banking systems.
Shenzhen University
2023 - 2024
Supervised by Distinguished Professor Joshua Zhexue Huang. Carried out optimizations on data processing and clustering algorithms by leveraging distributed approximate computing techniques.

If you are interested in any aspect of me, I am always open to discussions and collaborations. Feel free to reach out to me at - siming_deng_stat [at] 163.com

Seeking Software Engineer and Machine Learning roles — AI Infrastructure, Applied AI / Agents, and ML Systems. Feel free to reach out!


Publications

Siming Deng, Jun Zhang, Jiongtao Zhong
Communications in Statistics - Simulation and Computation, 2026 [paper]
SCI, first author
Siming Deng, Jun Zhang
Statistical Analysis and Data Mining, 2024 [paper]
SCI, JCR: Q1, first author, Top Cited Article - WILEY 2025
Siming Deng, Jun Zhang, Yingcong Huang, Jiongtao Zhong & Xiaozhen Yang
Communications in Statistics - Simulation and Computation, 2024 [paper]
SCI, first author, Highly Cited Paper - Web of Science
Jiongtao Zhong, Siming Deng, Jun Zhang & Zhenghui Feng
Communications in Statistics - Theory and Methods, 2023 [paper]
SCI, 2nd-author
Jun Zhang, Xuan Yu, Siming Deng, Jiongtao Zhong, Yisheng Zhou & Bingqing Lin
Communications in Statistics - Theory and Methods, 2023 [paper]
SCI, 3rd-author

Research Interests

  • ML Systems & AI Infrastructure
  • Efficient & On-Device Inference (Apple MLX, SGLangSGLang logo)
  • Agentic AI (multi-agent orchestration & tool use)
  • Machine Learning
  • Nonparametric Statistics

I currently work at the intersection of AI infrastructure and applied ML, building agent runtimes and optimizing LLM inference.

Previously, my research centered on nonparametric statistics and measurement-error modeling, unobservable-variable estimation under multiplicative distortion frameworks, where I developed calibration methods and simulation studies to improve correlation-coefficient estimation in complex industrial settings, resulting in five SCI publications.


News and Updates

September 2026 Milestone

Apple unveils iPhone 18 Pro & iPhone Duo. Proud to have contributed to the agentic hardware-testing tooling behind the launch.

Jan 2026 Milestone

Excited to have received an offer from Apple!

March 2025 Milestone

Thrilled to have received an offer from UPenn Engineering!

August 2024 Publication

First-Author Paper: A New Logarithmic Multiplicative Distortion for Correlation Analysis Now Officially Published in Statistical Analysis and Data Mining (JCR Q1)