Freelancer profile translated to English.
Back to original languageAbout Wissem
Passionate about system and network administration, I support companies in setting up, optimizing, and securing their IT infrastructures.
Linux-oriented System Administrator / DevOps, I am involved in the entire operating cycle: server deployment, automation, containerization, monitoring, security, and performance optimization.
I can work on on-premise, cloud, or hybrid environments, for both one-off missions and for the operation and continuous improvement of infrastructures.
Skills and areas of intervention:
• Linux system administration (Debian, Ubuntu, CentOS, RedHat)
• Nginx / Apache web servers
• Docker containerization
• Ansible / Bash / scripting automation
• Setting up CI/CD pipelines (GitLab CI, Jenkins)
• Git / GitLab code management
• Monitoring and observability Zabbix / Prometheus / Grafana
• System security: Linux hardening, firewall, Fail2ban, audit
• ELK / Graylog log management
• Server and web performance optimization
• Infrastructure deployment and system maintenance
• Virtualization and server environment management
• Diagnosis, troubleshooting, and incident resolution
Frequently used technologies:
Linux, Docker, Nginx, GitLab, CI/CD, Ansible, Bash, monitoring, system security, DevOps, server administration, web infrastructure.
My goal: to provide reliable, secure, and automated infrastructures to ensure service stability and performance.
Available for system administration, DevOps, Linux infrastructure, automation, and server environment security missions.
English
Fluent
French
Native or bilingual
Arabic
Native or bilingual
Can work on-site
Toulon (up to 50km)
Experience
- STRATISLead DevOps & Linux Infrastructure ExpertDecember 2023 - Today (2 years and 6 months)Lead DevOps responsible for the architecture, security, and operation of web hosting infrastructures for multi-client production environments (CMS, high-traffic sites, business services).I am involved in auditing, implementing, migrating, securing, and optimizing Linux platforms for SMEs, web agencies, and local authorities.Main missions• Design of high-availability web hosting architectures (LEMP / LAMP)• Management of shared and dedicated infrastructures (VPS & bare-metal)• Hardening and securing Linux servers (firewall, WAF, ANSSI/OWASP best practices)• Administration of professional mail servers (Microsoft 365, SMTP/IMAP, deliverability, SPF/DKIM/DMARC)• Implementation of automation and industrialization of deployments (Ansible, CI/CD)• Optimization of web performance (Nginx, caching, system & database tuning)• Implementation of monitoring, alerting, and observability (Zabbix, Grafana, Prometheus)• DNS management, reverse proxy, VPN, and network segmentation• Diagnosis of critical incidents and resolution of production issues• Consulting, documentation, and technical support for teamsTypes of projects carried out• Hosting of CMS (WordPress, Drupal, Typo3)• Server migration and infrastructure redesign• Securing internet-facing environments• Stabilization of professional mail services• Implementation of CI/CD pipelines and infrastructure automation
- stratisLead System Administrator & DevOpsDIGITAL AND ITApril 2022 - Today (4 years and 2 months)- Infrastructure Manager- Maintenance of the Microsoft Azure AD solution- SSO interconnection- Implementation of VPS & OVH Bare-metal- LEMP stack configuration
- Axe E-SantéSystem and Network AdministratorSOFTWARE PUBLISHINGMay 2018 - March 2022 (3 years and 11 months)● Preparation of Linux virtual servers (LAMP, web application, and security) using automated scripts (under Ansible and Vagrant)● Preparation of Linux physical machines● Security, maintenance, and supervision of the IT park● Implementation of maintenance tunnels via VPN IPSec or Reverse SSH for access to virtual servers or physical machines at client sites.● Remote administration of equipment (SSH or VNC)● Support for developers and Level 2 hotline support
Reviews
C
Clément
Administrateur systèmes et réseaux - Digital Chemists SARL
Reviewed on 4/28/2026
Audit report provided on time. Serious and professional work.
Clément
CDC Consulting
Reviewed on 6/24/2024
I had the pleasure of collaborating with Wissem Aouini on a DNS migration mission for one of our clients, and I am extremely satisfied with his work.
Wissem demonstrated great professionalism, solid technical skills, and excellent responsiveness throughout the mission. He meticulously verified the current configuration, impeccably configured the DNS and WEB, and ensured the final proper functioning.
Thank you very much, Wissem!
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Education
- ASR Bachelor's DegreeUniversity of Toulon2018