Salim Achouche is a veteran backend software architect with over two decades of experience building scalable, high-performance systems, currently serving as a Consulting Member Of Technical Staff in Oracle Cloud. He specializes in distributed systems, compute engines, database internals, and Big Data/cloud technologies, with a strong track record of solving low-level performance and resource-leak issues. Previously a Principal Software Engineer at MapR and Senior Software Architect at Informatica, he brings deep production experience across enterprise data platforms. An active open-source contributor, Salim has improved memory handling and query performance in the widely used Apache Drill project, tackling Parquet reader leaks and filter pushdown edge cases. Based in Chapel Hill, NC, he pairs hands-on engineering with architectural thinking to deliver resilient, large-scale data infrastructure. Colleagues rely on him for pragmatic solutions that bridge database internals and cloud-native deployment realities.
8 years of coding experience
23 years of employment as a software developer
Master's degree in CS, Computer Science, Master's degree in CS, Computer Science at Wichita State University
Apache Drill is a distributed MPP query layer for self describing data
Role in this project:
Back-end Developer
Contributions:25 commits, 47 PRs, 1 push in 1 year 5 months
Contributions summary:Salim primarily contributed to the Apache Drill project by fixing memory leaks and improving performance within the Parquet reader and other components. Their work involved addressing issues related to file descriptor leaks, memory leaks in the Parquet reader, and filter pushdown problems when statistics are missing. They also improved SQL pattern matching performance and addressed query failures related to data type changes.
Contributions:64 pushes, 41 branches, 1 comment in 1 year 7 months
drilljavaapache-drillapache
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Salim Achouche - Consulting Member Of Technical Staff at Oracle