# Alexandra Wang > PostgreSQL developer at EDB Location: San Francisco Bay Area, United States Profile: https://flows.cv/alexandrawang I work in many areas of the database kernel, including query optimizer, query executor, storage, distributed transaction manager, performance testing, etc. I'm passionate about building high performance databases for various workloads. ## Work Experience ### Senior Staff Software Engineer @ EDB Jan 2024 – Present PostgreSQL database development ### Staff Software Engineer @ Dremio Jan 2024 – Jan 2024 | Santa Clara, California, United States Worked on Query Execution with Apache Arrow. ### Committer @ Greenplum Database Jan 2017 – Jan 2024 https://github.com/greenplum-db/gpdb-archive ### Member of Technical Staff 4 @ VMware Jan 2022 – Jan 2024 | Palo Alto, California, United States - Distributed database kernel development in general with MPP (massively parallel processing) architecture. Work covers but not limited to query parser, optimizer, dispatcher, executor, cost model, transaction management, storage management, crash recovery, wal replication, performence testing, troubleshooting, etc. - Cross team, cross geo, open-source communication - Led query performance acceleration team as anchor (lead engineer) ### Member Of Technical Staff 3 @ VMware Jan 2020 – Jan 2022 | Palo Alto, California, United States Greenplum database kernel developer ### Senior Software Engineer @ Pivotal Software, Inc. Jan 2019 – Jan 2019 | Palo Alto, California, United States Develop Greenplum database server ### Software Engineer @ Pivotal Software, Inc. Jan 2017 – Jan 2019 | Palo Alto, California - Develop Greenplum database server - Develop Greenplum internal tools - Release engineering ### Software Engineer @ Pandora Media, Inc. Jan 2016 – Jan 2017 | Oakland, California - Build data pipelines between application services, Kafka, Hadoop cluster, and databases - Develop reliable and high-performance campaign reporting and Ad analytics systems - Develop MapReduce, Tez, Spark jobs, and maintain analytics platform ## Education ### Master of Science (M.S.) in Information Technology, School of Computer Science Carnegie Mellon University ### Non-Degree SCPD Student in Computer Systems, Databases Stanford University ### Master of Science - MS in Chemical Engineering, College of Engineering Carnegie Mellon University ### Bachelor of Science (B.S.) in Chemistry Wuhan University ## Contact & Social - LinkedIn: https://linkedin.com/in/leiwang1120 --- Source: https://flows.cv/alexandrawang JSON Resume: https://flows.cv/alexandrawang/resume.json Last updated: 2026-04-05