08/06/2026 updated
100 % available
Senior Cybersecurity, Software, Linux & DevOps Consultant
Vazerac, France
Worldwide
Penetration TestingUbuntu (Operating System)Cloud Computing SecurityCode ReviewDebian LinuxLinuxDevOpsDigital ForensicsVirtual Private Networks (VPN)Python (Programming Language)Network SecurityLinux AdministrationLinux Security ModulesLinux ServersLinux Support
Senior Cybersecurity, Software, Linux and DevOps Consultant with extensive experience designing, securing, troubleshooting and improving complex IT infrastructures and business applications.
I support companies, IT providers and technical teams on software development, cybersecurity, Linux administration, networking, cloud infrastructure, automation and security operations. I can join existing teams or deliver complete technical projects from analysis to implementation.
Software Development
• Backend development
• Web application development
• REST API design and integration
• Python development
• Bash scripting
• SQL databases
• Data processing
• Application maintenance
• Bug fixing
• Performance optimization
• Technical documentation
• Code review
• Software architecture
Cybersecurity
• Infrastructure security
• Web security
• Security assessments
• Vulnerability assessments
• Penetration testing
• Linux hardening
• Incident response
• Digital forensics
• Security monitoring
• Detection engineering
• Security automation
• Security awareness
SOC / SIEM
• Wazuh
• Splunk
• Elastic Stack
• OpenCTI
• NDR deployment
• Threat detection
• Log analysis
• Alert tuning
• False positive reduction
• Detection use cases
• Incident investigation
Linux & Infrastructure
• Debian
• Ubuntu
• Rocky Linux
• AlmaLinux
• VPS administration
• Virtualization
• Proxmox
• Docker
• NGINX
• OpenLDAP
• rsyslog
• NTP
• PKI
• SSH
• System troubleshooting
• Performance analysis
• Monitoring
• Backup strategies
Networks & DevOps
• Network troubleshooting
• DNS
• VPN
• Routing
• Firewalls
• Reverse proxy
• Infrastructure automation
• Ansible
• CI/CD
• Deployment
• Git
• Infrastructure documentation
Cloud & Hosting
• OVHcloud
• VPS deployment
• Web hosting
• Reverse proxy
• SSL/TLS
• DNS management
• Server migration
• Infrastructure optimization
I have worked with SMEs, managed service providers, cybersecurity teams, financial organizations and public sector environments.
I focus on delivering practical, maintainable and secure solutions. My approach combines strong technical expertise, clear communication and rapid problem solving. I am available for remote freelance assignments, software development, cybersecurity projects, Linux administration, infrastructure troubleshooting, DevOps, technical audits and expert consulting.
Experience
Professional experience10+ years
Freelancer since2021
Languages
EnglishFluentFrenchNative speaker
Project history
- Founder of a cybersecurity consulting company delivering security services for SMEs, enterprises and public organizations.
- Conduct infrastructure, Active Directory, Linux, web application and cloud security assessments.
- Perform penetration testing, vulnerability assessments and remediation planning.
- Design, deploy and improve SOC, SIEM and detection engineering capabilities.
- Incident response, digital forensics and post-incident analysis.
- Linux server hardening, system administration and infrastructure security.
- Security architecture, network segmentation, VPN deployment and firewall configuration.
- Automation using Python, Bash and Ansible.
- Deliver cybersecurity awareness sessions and technical training for engineers, administrators and students.
- Support customers from security strategy to implementation with practical and business-oriented recommendations.
- Designed and implemented cybersecurity architectures focused on network detection and response (NDR).
- Led the deployment and operational management of enterprise NDR solutions across multiple environments.
- Redesigned existing detection strategies to significantly reduce false positives while improving detection quality and analyst efficiency.
- Adapted and optimized Advanced Detection Rules (ADR) to increase detection accuracy and reduce alert fatigue.
- Managed NDR lifecycle including architecture, deployment, maintenance, upgrades (MCO/MCS) and continuous improvement.
- Worked closely with SOC analysts, incident responders and infrastructure teams to improve detection capabilities and investigation workflows.
- Evaluated new detection use cases based on attacker techniques and real-world threats.
- Produced technical documentation, deployment procedures and operational guidelines.
- Provided technical leadership during customer onboarding, architecture reviews and security improvement projects.
- Designed, deployed and improved SOC and NDR capabilities for large enterprise environments.
- Built detection strategies, correlation rules and advanced detection use cases to identify sophisticated cyber threats.
- Led NDR architecture, deployment and operational management while significantly reducing false positives through rule tuning and detection optimization.
- Designed log collection architectures and onboarded Linux, Windows, Active Directory, firewalls, proxies, VPNs and cloud services into SIEM platforms.
- Defined audit policies, validated data quality and ensured complete visibility across monitored infrastructures.
- Supported incident response, threat hunting and security investigations alongside SOC analysts.
- Developed technical documentation, operational procedures and security standards.
- Automated administration and deployment tasks using scripting and infrastructure automation tools.
- Worked with security, infrastructure and network teams to strengthen monitoring, detection and overall security posture.
- Provided technical leadership, architecture guidance and continuous improvement for cybersecurity platforms.