Romain Hardouin
Cassandra DBA Architect at Teads.tv
Lyon, Auvergne-Rhône-Alpes, France
Summary
👤
Senior🎓
Top SchoolRomain Hardouin is a Cassandra DBA Architect with 13 years of experience designing and operating large-scale distributed systems, currently running production Cassandra clusters of 300+ nodes and Kafka deployments exceeding 200 brokers. He blends deep NoSQL expertise with practical cloud and automation skills across AWS/GCP, Terraform, Chef, Docker and custom Go/Java/Python tooling to keep high-throughput services resilient and performant. A hands-on engineer who manages a Cassandra fork and contributes to notable open-source projects like OpenStack Horizon and Cassandra Medusa, he focuses on reliability, observability and maintainability. Romain pairs operational rigor—monitoring, tuning and incident troubleshooting—with data modeling guidance to help teams balance business requirements and performance. Based in Lyon, he has a background spanning virtualization, RDBMS and systems programming, and often surfaces subtle compatibility and UX issues (e.g., Swift container name handling) in community projects. Colleagues rely on him for pragmatic fixes that improve both developer experience and production stability.
13 years of coding experience
12 years of employment as a software developer
Maths Sup, Cergy-PontoiseBTS Informatique, Option Développeur d'applications, Informatique : 20, Mathématiques : 19, BTS Informatique, Option Développeur d'applications, Informatique : 20, Mathématiques : 19 at BTS Informatique, Lyon
Italian, English
Stackoverflow
3,839reputation
256kreached
4answers
0questions
pip
top-1%
python
top-5%
Github Skills (27)
cassandra10
python10
django10
horizon10
backup10
openstack10
pip10
re-store10
cassandra-database10
testing9
security9
configuration-management9
aws-security-group9
network-security-groups9
swift9
Programming languages (10)
Github contributions (5)
thelastpickle/cassandra-medusa
Mar 2021 - May 2021
Apache Cassandra Backup and Restore Tool
Role in this project:
DevOps Engineer & Backend Developer
DevOps Engineer & Backend DeveloperContributions:7 reviews, 6 commits, 5 PRs in 2 months
Contributions summary:Romain's contributions primarily focused on improving the project's code quality and maintainability. This included fixing deprecation warnings, ensuring correct shebang usage, and fixing import statements. They also made changes to configuration files, allowing settings to be overridden, and improving the testing infrastructure by integrating custom config files. These changes suggest a focus on both backend code and operational aspects related to testing and configuration.
cassandracassandra-backupapacherestoredatabase
openstack/horizon
Sep 2013 - Apr 2014
OpenStack Dashboard (Horizon). Mirror of code maintained at opendev.org.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits in 6 months
Contributions summary:Romain primarily focused on improving the Horizon dashboard's functionality and robustness. Their work involved fixing bugs related to Nova extension handling, specifically addressing issues when the `SimpleTenantUsage` extension was not enabled, and updating the interface to accommodate Swift container names containing special characters. Furthermore, the user refactored and improved the security group forms, enhancing their usability and adherence to character restrictions. This involved both UI/UX considerations and backend logic improvements.
horizonopendevopenstackdashboardenterprise
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