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I am a Research Associate and a PhD candidate in the Database Systems (DIMA) group at TU Berlin mentored by Volker Markl and Jorge Quiané-Ruiz.

My current research has been focusing on confidential computing in data processing systems, privacy-preserving cloud systems, and modern hardware.

Before joining TU Berlin as a researcher, I completed an EIT double M.Sc. at TU Berlin and UPM Madrid. During my Master’s thesis, I collaborated with Logical Clocks in Stockholm and developed infrastructure to enable streaming IoT data pipelines in Hopsworks.

Publications

Full Papers

  • Cracking-Like Join for Trusted Execution Environments
    Kajetan Maliszewski, Jorge-Arnulfo Quiané-Ruiz, Volker Markl
    PVLDB ‘23. paper. code. slides. poster.
  • What Is the Price for Joining Securely? Benchmarking Equi-Joins in Trusted Execution Environments
    Kajetan Maliszewski, Jorge-Arnulfo Quiané-Ruiz, Jonas Traub, Volker Markl
    PVLDB ‘21. paper. code. video. slides. poster. reproducibility.

Others

  • TeeBench: Seamless Benchmarking in Trusted Execution Environments
    Kajetan Maliszewski, Tilman Dietzel, Jorge-Arnulfo Quiné-Ruiz, Volker Markl
    SIGMOD ‘23 (demo). paper. website. poster.
  • Secure Data Processing at Scale
    Kajetan Maliszewski
    PhD Workshop @ VLDB ‘20. paper. slides. video.

Thesis Supervision

  • Tilman Dietzel
  • Leonhard Rose

Teaching

  • Database Lab (DBPRA), TU Berlin : WS22/23, SS23, WS23/24
  • Big Data Systems Project (BDSPRO), TU Berlin : WS21/22
  • Big Data Analytics Seminar (BDASEM), TU Berlin : SS21, SS22
  • ROC Foundations for Graduate Research in Data Management and Machine Learning Systems (ROC), TU Berlin : WS20/21
  • Advanced Topics in Database and Information Systems Seminar (DBSEM), TU Berlin : SS20, WS21/22, SS22

Invited Talks and Presentations

  • Secure Joins using TEEs, NVIDIA, Santa Clara, USA, October 2024
  • Cracking-Like Join for Trusted Execution Environments, VLDB’23, Vancouver, Canada, August 2023
  • Secure Databases with TEEs, UC Santa Cruz, Santa Cruz, USA, July 2023
  • TeeBench: Seamless Benchmarking in TEEs (demo), SIGMOD’23, Seattle, USA, June 2023
  • Relational Joins in TEEs, Singapore University of Technology and Design (SUTD), Singapore, September 2022
  • What Is the Price for Joining Securely? Benchmarking Equi-Joins in TEEs, VLDB’22, Sydney, Australia
  • Secure Data Processing at Scale, PhD@VLDB’20, August 2020

Service

  • 2024 - SIGMOD (external), VLDBJ, AsiaCCS (external)
  • 2023 - ICDE (external), SIGMOD (external, availability)
  • 2021 - VLDB (external)

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