CV

Education

• Yale University, M.S. in Computer Science, 2021-2022
• Peking University, B.S. in Computer Science with minor in Economics, 2016-2020

Work experience

• Meta, Software Engineer (Feb 2025 - Present)
  • Working on open source database query engine Presto and Velox
• AlipayUS, Software Engineer (Feb 2023 - Feb 2025)
  • Working on next-generation payment systems
• Shanghai Qi Zhi Institute, Researcher (Aug 2020 - Aug 2021)
  • High performance system group, working on database index on persistent memory
• Bytedance, Software Engineer Intern (June 2020 - Aug 2020)
  • Distributed storage group
• Bytedance, Software Engineer Intern (March 2019 - July 2019)
  • A starting project, later incubated to Xingfuli.

Skills

• Database Systems (Expert)
  • Presto, Velox, Index Structures, Persistent Memory
• High Performance Computing (Advanced)
  • Data Stream Processing, Sliding Windows, Sketch Algorithms
• Programming Languages (Advanced)
  • C++, Java, Python

Languages

• English (Fluent)
• Mandarin (Native)

Publications

Newton sketches: Estimating Node Intimacy in Dynamic Graphs Using Newton’s Law of Cooling

Chen, Q., Wang, K., Li, A., Wu, Y., Yang, T., & Cui, B. (2024). Newton sketches: Estimating Node Intimacy in Dynamic Graphs Using Newton's Law of Cooling. IEEE ICDE 2024.

When Tree Meets Hash: Reducing Random Reads for Index Structures on Persistent Memories

Wang, K., Yang, G., Li, Y., Zhang, H., & Gao, M. (2023). When Tree Meets Hash: Reducing Random Reads for Index Structures on Persistent Memories. ACM SIGMOD 2023.

A Sketch Framework for Approximate Data Stream Processing in Sliding Windows

Gou, X., Zhang, Y., Hu, Z., He, L., Wang, K., Liu, X., Yang, T., Wang, Y., & Cui, B. (2022). A Sketch Framework for Approximate Data Stream Processing in Sliding Windows. IEEE TKDE 2022.

Runtime Recovery of Web Applications under Zero-day ReDoS Attacks

Bai, Z., Wang, K., Zhu, H., Cao, Y., & Jin, X. (2021). Runtime Recovery of Web Applications under Zero-day ReDoS Attacks. IEEE Security&Privacy 2021.

Sliding Sketches: A Framework using Time Zones for Data Stream Processing in Sliding Windows

Gou, X., He, L., Zhang, Y., Wang, K., Liu, X., Yang, T., Wang, Y., & Cui, B. (2020). Sliding Sketches: A Framework using Time Zones for Data Stream Processing in Sliding Windows. SIGKDD 2020.

Interests

• Outdoor Activities: Snowboarding, Basketball, Traveling
• Indoor Activities: Billiard, Singing