Félix GUINGANT

Définition et standardisation de la stratégie d’observabilité et de logging via la rédaction d’ADR (Architecture Decision Records). Audit approfondi de l’infrastructure de monitoring et identification des axes d’amélioration techniques, opérationnels et financiers. Transformation et amélioration de Grafana Cloud avec la mise en place d’une stratégie d’observabilité centralisée. Pilotage de la migration ELK → Grafana Cloud, incluant la standardisation des logs et l’optimisation de leur exploitation. Mise en place de standards de logging : JSON, nomenclature des labels, cardinalité, rétention et corrélation des événements. Mise en place du Security as Code avec SOPS pour la gestion et le chiffrement des secrets. Définition d’une méthodologie de gestion des incidents : incident management, Blameless Post-Mortem, analyse 5 Why et amélioration continue. Conception et standardisation de Runbooks via la mise en place de templates réutilisables pour les équipes. Formation et accompagnement des équipes aux méthodologies SRE / DevOps, aux bonnes pratiques d’observabilité et à la gestion des incidents. Mise en œuvre et optimisation de l’écosystème Grafana Cloud, Loki, Mimir/Prometheus, Tempo et OpenTelemetry. Accompagnement des équipes dans l’adoption d’une culture SRE, orientée fiabilité, automatisation, observabilité et amélioration continue

Client: Diffusion Plus Technologies used: Terraform, Ansible, GitLab, Jenkins, Docker, Nutanix, Nginx, Zabbix Responsibilities & Achievements: • Deployed, optimized, and maintained DevOps solutions integrating Terraform and CI/CD pipelines, ensuring reliable and repeatable deployments. • Designed and managed a Docker cluster to improve container scalability, orchestration, and resource efficiency. • Provided Level 3 support and debugging, ensuring application and infrastructure stability with minimal downtime. • Automated infrastructure provisioning and configuration using Ansible and Jenkins, reducing manual interventions and deployment time. • Enhanced and maintained Bash scripts to increase automation efficiency across environments. • Designed and implemented automated deployment of virtual machines (VMs) on Nutanix using Terraform, enabling faster provisioning and operational consistency. • Monitored systems with Zabbix and configured Nginx for optimized load balancing and web service reliability.

Secure Cloud for a Genomics Center Technologies used: Terraform, Ansible, Ansible-Vault, GitHub Actions, OAuth2, Zabbix, Grafana, Keycloak, AlmaLinux, Nginx, The Bastion (OVH), PostgreSQL, OpenStack, GoPass, ThreatMapper, CrowdSec, CephFS, RShiny Responsibilities & Achievements: Design & Architecture • Architected and deployed a secure, high-availability cloud environment for global research teams, ensuring scalability and operational resilience. • Defined and enforced Infrastructure as Code (IaC) standards using Terraform and Ansible, enabling reproducible, automated deployments. • Integrated CI/CD pipelines with GitHub Actions to streamline development workflows and accelerate release cycles. Development & Documentation • Created and maintained Ansible playbooks and Terraform modules, fully documented for maintainability and knowledge transfer. • Authored guides and operational procedures to enhance team skills and ensure long-term sustainability of the platform. • Built Grafana and Zabbix dashboards for real-time monitoring of infrastructure health, application performance, and SLA compliance. Security & Authentication • Implemented centralized authentication with Keycloak and OAuth2 for secure, unified access across applications. • Hardened infrastructure with advanced authentication policies, firewall rules, and proactive threat detection using ThreatMapper and CrowdSec. • Managed sensitive data securely using Ansible-Vault and GoPass. SLA, Reliability & Performance • Established and monitored Service Level Agreements (SLAs) to guarantee high availability and reliability. • Optimized architecture with CephFS and OpenStack, ensuring resilience and service continuity. • Implemented advanced monitoring and proactive alerting, minimizing downtime and improving operational response.

Technologies used: Terraform, Ansible, Ansible-Vault, GitHub Actions, Jenkins, GitLab, OAuth2, Zabbix, Grafana, Keycloak, AlmaLinux, Nginx, The Bastion (OVH), PostgreSQL, OpenStack, GoPass, ThreatMapper, CrowdSec, CephFS, RShiny, PowerShell ⸻ Experience & Responsibilities ✅ Neom, Dassault Systèmes, Groupe CH – Linux System Administrator | DevOps • Deployed and managed Linux infrastructures across cloud and on-premise environments. • Implemented Infrastructure as Code (IaC) solutions using Terraform and Ansible for automated, reproducible configurations. • Integrated and optimized CI/CD pipelines with GitHub Actions, Jenkins, and GitLab, accelerating release cycles. • Secured systems with Keycloak, OAuth2, CrowdSec, and ThreatMapper, enforcing strong authentication and proactive threat mitigation. • Performed advanced monitoring and performance tracking using Zabbix and Grafana. • Trained and mentored a small team in DevOps methodologies, enabling adoption of IaC, CI/CD, and automation best practices. ✅ RAMQ – Windows System Administrator | DevOps • Managed and administered Windows Server environments to ensure high availability and service stability. • Automated infrastructure tasks using PowerShell, Ansible, and Terraform, standardizing deployments and configurations. • Implemented monitoring and logging solutions for real-time performance and incident tracking. • Defined and enforced security policies and enhanced authentication mechanisms to protect sensitive data and access. ⸻ Design & Documentation • Defined and implemented DevOps & SysOps standards to improve infrastructure management and operational efficiency. • Authored technical documentation and operational guides, ensuring long-term solution sustainability. • Built dashboards and reports in Grafana and Zabbix for proactive monitoring, performance insights, and SLA compliance.

Client: NEHS Digital Technologies used: Centreon, Shell, Python, RedHat, CentOS, Debian, HL7, Nexus, GLPI Responsibilities & Achievements: • Developed Centreon plugins to extend monitoring capabilities and improve visibility into infrastructure and services. • Migrated and upgraded the Centreon monitoring platform, ensuring smooth transition, enhanced performance, and reliability. • Automated monitoring and metric management tasks using Shell and Python scripts, reducing manual workload and improving alert accuracy. • Administered Linux systems (RedHat, CentOS, Debian) and managed asset and monitoring tools such as Nexus and GLPI. • Provided proactive support and optimization to ensure availability, stability, and performance of critical systems.

Client: Eureden (Triskalia & Groupe d’Aucy) Technologies used: Ansible, Nagios, PowerShell, Bash/Shell, CentOS, RedHat, AS400, Windows Server, AWS, Docker, Kubernetes, APX, VTOM, VMware, Zabbix Responsibilities & Achievements: • Integrated and industrialized new software solutions to optimize business processes and operational efficiency. • Developed and optimized Bash, Shell, and PowerShell scripts to automate system and application tasks, reducing manual interventions. • Automated system and functional maintenance across development, non-production ERP, and production environments. • Implemented a PowerShell framework to parallelize TALEND batch processing, significantly improving mass data job execution. • Enhanced and secured environment updates to maintain ERP functional integrity. • Monitored infrastructure using Nagios and Zabbix, ensuring high availability and proactive incident detection. • Deployed and managed cloud and containerized infrastructures leveraging AWS, Docker, and Kubernetes for scalability and resilience. • Authored technical documentation including operational procedures, manuals, and reports to ensure maintainability and knowledge transfer.

Responsibilities & Achievements: • Implemented a secure Wi-Fi architecture (WPA2), including location mapping and frequency analysis with Chanalyzer, ensuring optimal coverage and minimal interference. • Designed and deployed a high-availability Microsoft SQL Server solution using Always On technology, ensuring continuous availability and data resilience. • Established and managed monitoring and supervision systems with Zabbix and Grafana to track infrastructure performance in real time and trigger proactive alerts, minimizing downtime and user impact. • Provided technical user support, including account creation, VPN access management, and troubleshooting, ensuring smooth daily operations and high user satisfaction.

Software Developer – Alliance Bio Expertise Responsibilities & Achievements: • Designed and developed control software for a diluter using Visual Basic, improving process efficiency and accuracy for international clients. • Collaborated with technical and sales teams to understand client requirements and tailor the software to specific market needs. • Conducted thorough testing and deployment, ensuring robustness and reliability across diverse production environments. • Authored technical documentation and user manuals, enabling smooth adoption and minimal onboarding effort for end users.