University of Wisconsin–Madison

Celebrating Computer Sciences’ PhD students

By Rachel Robey 

Left-to-right: Laura Stegner, Nathan White, Professor Bilge Mutlu, and Bengisu Çağıltay. Stegner, White, and Çağıltay are PhDs number 14, 15, and 16 to come out of Mutlu’s People and Robots Lab.

In May, the Department of Computer Sciences celebrated spring commencement—by all accounts, one of the best in campus history. At the PhD graduation ceremony on May 9, 23 CS students walked across the stage toward their futures, finally becoming alumni after (on average) five to seven years of rigorous research and study. Now off to begin careers in academia and industry, commencement was a rare opportunity to reflect on all their hard work and accomplishments. “These moments are a reminder of how much support it takes to get through a PhD, and how much the achievement means not just to the student but to everyone around them,” said Professor Bilge Mutlu, who graduated three students this year, in a LinkedIn post. “The PhD graduates from UW–Madison Computer Sciences are truly exceptional, each tackling deep technical and social challenges and producing ideas that reshape research, industry, and society. They leave here not only as scholars but as changemakers.” Below, we celebrate the 33 students who defended their dissertations in the last year and officially added “PhD” to their CVs.

Doctoral students who defended between June 2024 and May 2025:

Saurabh Agarwal

Dissertation: Reducing synchronization overheads in Machine Learning systems Co-advisors: Shivaram Venkataraman and Dimitris Papailiopoulos Awards: Machine Learning and Systems Rising Star, NAACL SAC Award Current position: Postdoc at UT-Austin

Edward Barton

Dissertation: Practical Single Shot High Dynamic Range Imaging Advisor: Yu Hen Hu  

Bengisu Çağıltay

Dissertation: Designing Social Robots for Everyday Family Life Advisor: Bilge Mutlu Awards: Best Short Paper Award (ACM IDC), Best Paper Honorable Mention (ACM CHI) Current position: On the job market for faculty and postdoctoral positions.  

Mu Cai

Dissertation: Toward Versatile and Efficient Multimodal Models Advisor: Yong Jae Lee Awards: Qualcomm Innovation Fellowship Finalist (2024), UW Conference Presentation Award (2024), UW CS Summer Research Award (2021) Current position: Research Scientist at Google DeepMind

Xufeng Cai

Dissertation: Towards Efficient Optimization for Decomposable Problems in Large-Scale Machine Learning Advisor: Jelena Diakonikolas 

Joseph Catudal

Dissertation: Practical Environmental Sensing On Optical Communication Infrastructure Advisor: Paul Barford Current position: Research Team Lead, Academy Professor of the Army Cyber Institute at United States Military Academy 

Xuefeng Du

Dissertation: Foundations of Unknown-aware Machine Learning Advisor: Sharon Li Awards: Jane Street Graduate Research Fellowship, Ivanisevic Award (2025) Current position: Assistant Professor at Nanyang Technological University, Singapore   

Ying Fan

Dissertation: Sequential Learning for Foundation Models: Reinforcement Learning for Diffusion Models and Looped Transformers Advisor: Kangwook Lee Award: Rising Star in Machine Learning Current position: Senior Researcher at Microsoft Research 

Kevin Gaffney

Dissertation: Bridging the Processor-Memory Performance Gap in Database Systems Advisor: Jignesh Patel 

Bhavya Goyal

Dissertation: Robust Scene Inference under Adverse Conditions Advisor: Mohit Gupta Current position: Applied Scientist at Amazon Robotics 

Ashish Hooda

Dissertation: Security of Real World Machine Learning Systems Co-advisors: Kassem Fawaz and Somesh Jha 

Mazharul Islam

Dissertation: Safeguarding online authentication systems from attacks Advisor: Rahul Chatterjee Awards: Ce-an Zuo and Chao-ming Wang Scholar (2024) Current position: Security Engineer II at Uber

Sacha Jungerman

Dissertation: Spatial Computing from Photons Advisor: Mohit Gupta 

Rishabh Khandelwal

Dissertation: Assessing and Enhancing Users’ Online Data Privacy   Advisor: Kassem Fawaz 

Cheuk Yin (Eric) Lin

Dissertation: Faster Coordinate Algorithms for Structured Machine Learning Problems Advisor: Jelena Diakonikolas  Current position: Research Scientist at Meta

Ziqian Lin

Dissertation: Understanding In-Context Learning via Synthetic and Controllable Datasets Advisor: Kangwook Lee

Jing Liu

Dissertation: Scale, Performance, and Fault-Tolerance in a Filesystem Semi-Microkernel Co-advisors: Andrea and Remzi Arpaci-Dusseau Awards: Best Paper (2025 USENIX), Erik Riedel Best Paper Award (FAST ’25), Meta PhD Fellowship (2022) Current position: Senior researcher at Microsoft

Anna Meyer

Dissertation: Robustness to Multiplicity in the Machine Learning Pipeline Co-advisors: Aws Albargouthi and Loris D’Antoni Awards: WISCIENCE STEM Public Service Fellow Current position: Assistant Professor at Carleton College

Elena Milkai

Dissertation: Real-Time Analytics On Cloud Database Systems Co-advisors: Jignesh Patel and Xiangyao Yu

Shyam Murthy

Dissertation: Instruction Presending Advisor: Gurindar Sohi 

Eric Pauley

Dissertation: Methods and Applications for Cloud-based Internet Measurement Advisor: Patrick McDaniel Awards: Outstanding Graduate Student Research Award (2024), Best Paper Runner‑Up (ACM IMC 2023), Top Program Committee Member (2025 IEEE SP 2025) Current position: Assistant Professor at Virginia Tech, Co-Founder/CEO of DScope Security    

Martin Prammer

Dissertation: Towards Architecture-Aware Data Analytics Advisor: Jignesh Patel Awards: Program Committee Member (ACM SIGMOD, VLDB 2026), Session Chair (CIDR 2025) Current position: Postdoc at Carnegie Mellon

Anthony Lawrence George Rebello

Dissertation: Correctness and Performance with Declarative System Calls Co-advisors: Andrea and Remzi Arpaci-Dusseau Awards: Invited to publish an extended version in the ACM Transactions on Storage Current position: Platforms Infrastructure Engineer at Google

Nicollas Mocelin Sdroievski 

Dissertation: Derandomization vs. Lower Bounds for Arthur-Merlin Protocols Advisor: Dieter Van Melkebeek Awards: UW CS Graduate Instructor Award (2022) Current position: Assistant Professor at the State University of Paraná in Brazil

Zhenmei Shi

Dissertation: Understanding Training and Adaptation in Feature Learning: From Two-layer Networks to Foundation Models Advisor: Yingyu Liang Current position: Senior research scientist at MongoDB 

Laura Margaret Stegner

Dissertation: Toward Integrating Care Robots into Senior Living Facilities Advisor: Bilge Mutlu Awards: NSF Graduate Research Fellow, Heidelberg Laureate Forum Young Researcher, Cisco Distinguished Graduate Fellow  Current position: Assistant Professor of Mechanical and Aerospace Engineering at George Washington University   

Yuxin Sun

Dissertation: Algorithms and Information-Computation Trade-offs in High-Dimensional Statistical Estimation Advisor: Ilias Diakonikolas Current position: Postdoc at Aarhus University

Harit Vishwakarma

Dissertation: Towards Reliable Machine Learning: From Data to Deployment Co-advisors: Frederic Sala and Ramya Vinayak

Roger Waleffe

Dissertation: Algorithms and Systems for Scalable Machine Learning over Graphs Advisor: Steve Wright 

Qisi Wang

Dissertation: Extending Projective Dynamics for Practical and Efficient Simulation Advisor: Eftychios Sifkis 

Nathan White

Dissertation: Improving Human-Robot Collaboration through Abstraction and Scaffolding in Planning and Programming Interfaces Advisor: Bilge Mutlu

Hangdong Zhao

Dissertation: Advancing Join Algorithms for Real-World Queries Advisor: Paris Koutris Awards: ACM Best Paper Award, ACM Distinguished Paper Awards, Outstanding Graduate Student Research Award (2025)  Current position: Senior Applied Scientist at Microsoft

Yunjia Zhang

Dissertation: Machine Learning for Data Analytics: Profiling, Querying, and Beyond Co-advisors: Jignesh Patel and Theodoros Rekatsinas
Congratulations to the 2024-2025 PhD students!