Daniel Ohayon
Software Engineer at Meta
Raleigh-Durham-Chapel Hill Area United States
Summary
🤩
Rockstar🎓
Top SchoolDaniel Ohayon is a software engineer with 11 years of experience building large-scale data and GenAI infrastructure, currently focused on developer tools for data pipelines and SQL authoring at Meta. He brings deep backend expertise in Java, Python and distributed systems, and has hands-on experience implementing SQL features for the widely used Presto query engine to add enum literal support. His background spans bioinformatics and genomics platforms—leading R&D and engineering teams to deliver cloud-native pipelines and interactive visualizations for terabytes of sequencing data. Trained at Ecole Centrale Paris and Cambridge (Computational Biology, Distinction), he blends rigorous engineering with applied machine learning and statistical work from translational research projects. Comfortable moving between low-level query planner changes and high-level platform design, he pairs technical depth with experience managing cross-disciplinary teams for industry and scientific customers. Based in Durham, NC, he combines production-grade software craft with domain expertise in bioinformatics and data-intensive systems.
11 years of coding experience
5 years of employment as a software developer
Master's Degree, Engineering, Master's Degree, Engineering at Ecole Centrale ParisMaster's degree, ENGINEERING, Master's degree, ENGINEERING at CentraleSupélecMaster's Degree, Computational Biology, Graduated with Distinction, Master's Degree, Computational Biology, Graduated with Distinction at University of Cambridge
French, English, Hebrew
Github Skills (10)
query-engine10
javas10
query-builder10
sql10
presto10
java10
big-data9
data-set8
data-model8
user-data8
Programming languages (5)
Github contributions (5)
prestodb/presto
Jun 2020 - Jan 2021
The official home of the Presto distributed SQL query engine for big data
Role in this project:
Back-end Developer
Back-end DeveloperContributions:22 reviews, 17 commits, 17 PRs in 6 months
Contributions summary:Daniel primarily contributed to the implementation of enum literals within the Presto query engine. Their work involved modifying code across several Java files, notably `ExpressionTreeUtils`, `ExpressionAnalyzer`, and `RelationPlanner`. The contributions demonstrate a focus on enhancing Presto's SQL parsing and query capabilities to support enum data types, adding enum operators and enabling the use of enum literals in queries.
big-dataprestosql-queryjavahive
daniel-ohayon/imperial-networks
Oct 2021 - Dec 2024
Contributions:42 pushes, 1 branch in 3 years 2 months
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