About Jean-Marie Renouard
Recognized expert consultant, passionate about systems optimization and infrastructure performance for over 20 years.
Career & Vision
Entrepreneur since 2012, I founded **Lightpath** to bring uncompromising technical expertise to companies facing scalability and security challenges.
With a rich background in the banking sector (BNP Paribas/BP2I), I now support my clients throughout their data lifecycle: from initial architecture to extreme performance optimization.
My involvement in **Open Source** (major contributor to MySQLTuner) and the writing of technical books (PHP Performance) allow me to offer solutions based on proven standards and constant technological watch.
NoSQL Expert
Cassandra & MongoDB
DataOps Leader
PostgreSQL & Automation
Key Professional Experiences
Cassandra & MongoDB DBA Expert
BNP (BP2I) | 2025 - Present
Administration of a massive NoSQL park: 23 Cassandra clusters and 600 MongoDB databases. Automation via Ansible Tower playbooks and continuous optimization using internal AI (Mistral).
DevDataOps Cassandra/MySQL/PostgreSQL
Datanumia (Groupe EDF) | 2022 - 2025
Management of 120 RDS PostgreSQL/MySQL and 7 Cassandra clusters (12 TB). Full automation: Terraform, Ansible, Rundeck, ArgoCD and Kubernetes.
Ingénieur Données Senior
RENATER | 2021 - 2022
Operational maintenance of 190 servers. Management of MariaDB Galera clusters for 4800 users (250 TB of data).
DBA Leader PostgreSQL
GALEC (E.LECLERC) | 2019 - 2021
Maintenance of more than 110 PostgreSQL servers and 250 databases. Automation of operations via Docker and Ansible.