Jonathan Sarig
Co-Founder & CTO at Jon’s Lab
Israel
Summary
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RockstarJonathan Sarig is a backend-leaning software engineer and startup CTO with five years of experience building data-driven systems and open-source tooling in Rust, Go, and Python. He has delivered production data warehouses, ML APIs, and ELT/Cloud governance fixes at organizations like CloudQuery and Upstream Security, and earlier designed analytics platforms for the IDF’s Cyber Defense Directorate. As a co-founder and technical lead, he blends hands-on bug-fixing—such as precise AWS policy and ELB query corrections in the CloudQuery codebase—with product-facing architecture work for new ventures. His toolset spans fast backend services, Apache Arrow-powered ETL, Airflow pipelines, and statistical/ML libraries used across teams. Based in Israel, he pairs a strong math and physics curiosity with practical engineering discipline, often favoring high-performance, correctness-focused solutions. Notably, he moves fluidly between low-level query logic and higher-level ML deployments, a combination that accelerates both reliability and innovation.
5 years of coding experience
5 years of employment as a software developer
Hebrew, English
Github Skills (7)
aws10
sql10
data-analysis9
etl5
go4
kubernetes3
kubernetes-pods3
Programming languages (4)
Github contributions (5)
cloudquery/cloudquery
Jul 2023 - Jul 2025
Data pipelines for cloud config and security data. Build cloud asset inventory, CSPM, FinOps, and vulnerability management solutions. Extract from AWS, Azure, GCP, and 70+ cloud and SaaS sources.
Role in this project:
Backend Developer
Backend DeveloperContributions:2 reviews, 8 PRs, 1 push in 2 years
Contributions summary:Jonathan primarily contributed to the project by fixing bugs within the AWS policies queries. They addressed issues related to incorrect conditions, case sensitivity, and redundant rows, primarily within the `secretsmanager`, `kms`, `elasticbeanstalk`, and `ssm` AWS services. Their work involved modifying SQL queries and associated logic within the codebase to align with desired functionality and improve accuracy. The user also modified an ELB query to ensure HTTPS/SSL listeners were using a predefined security policy.
awsazuredata-pipelinedata-pipelinesgcp
john-s58/john-s58
Apr 2023 - Nov 2024
Contributions:8 pushes, 1 branch in 1 year 7 months
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