Alexis Nicolas Schlomer

Software Engineer at Databricks on the Photon Query Processing team.
Currently located in Bellevue, WA, USA 🇺🇸.

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aschlome@cs.cmu.edu

Welcome! I’m Alexis, a Software Engineer at Databricks working on Query Processing in Photon. I hold an MS in Computer Science from Carnegie Mellon University and a Bachelor’s degree in Computer Science from EPFL.

My interests lie in databases, networks, and systems engineering. I invented Panorama, a system that accelerates vector search (ANNS) by orders of magnitude (2–30×). Panorama is now part of Faiss, the open-source vector search library developed by Meta AI. Prior to joining Databricks, I was a systems programmer for the CMU Database Group and the tech lead of optd, an open-source query optimizer designed to make query optimization more principled and efficient.

Before my graduate studies, I was born and raised in northern Belgium, moving to southern Switzerland at age 11, where I later completed my undergraduate education.

News

Oct 16, 2025 My paper Panorama on accelerating ANN vector search is now available on arXiv!
Dec 31, 2024 Updated my CMU course reviews with Fall 2024 content.
Dec 24, 2024 Added my publications from SIGCOMM ‘24. Go check them out!
Aug 8, 2024 Updated my CMU course reviews with Spring 2024 content.
Dec 25, 2023 Wrote a reflection on my time at EPFL for aspiring computer scientists wishing to pursue their bachelor’s in Switzerland.