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.