Freelancer profile translated to English.
Back to original languageAbout Eric
Online CV: cv.grunwasser.fr
Autonomous, rigorous, and passionate. TS IGI 1300 (formerly TSD) eligible.
With 20 years of experience in IT, I can offer you solutions adapted to your constraints (technical and budgetary) to increase the performance, availability, and security of your information system.
Areas of Expertise:
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OS: Debian Linux, RedHat Enterprise Linux, CentOS, Rocky, Kali Linux
Web: Apache, Nginx, HAProxy, PageSpeed, Memcache, PHP
DB: MySQL, MariaDB, Percona XtraDB, PostgreSQL
Monitoring: Cacti, Grafana, Zabbix, Munin, Nagios, Centreon, Datadog, NewRelic, Dynatrace
Scripting: Bash, Shell, Python
CMS: Wordpress, Joomla, Hybris
Security: iptables, WireGuard, OpenVPN, pfSense, Fortigate, fail2ban, CrowdSec, OpenSSL, ModSecurity, OpenSSL, Linux hardening (ANSSI recommendations)
Artificial Intelligence: Mistral AI / Mixtral, GPT4, ChatGPT, Bard/Gemini, LLaMa, Vicuña, Alpaca, Stable Diffusion, DreamBooth, Dall-E, Midjourney, Whisper, oLLama, LLM ...
Messaging: Postfix, DKIM, SPF, DMARC, SpamAssassin
Backups: BorgBackup, Bacula, Veam, BackupPC, Duplicity, rsync
Deployment: Ansible, Jenkins, RedHat Satellite
Virtualization/Containers: VMWARE, Proxmox, LXC, Docker
Other: Jitsi, BigBlueButton, NextCloud, OwnCloud, GLPI, Git
Current Hobby: Progressing on HackTheBox.com (Hacker Level Pro)
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Paris (up to 10km)
Experience
- Auto-entrepreneurExpert Infra / Linux / WebPerf🚀DIGITAL AND ITJanuary 2020 - Today (6 years and 7 months)Paris, France- Audit / Consulting- Support / Training- Technical Expertise:N3 Support Linux Debian & RedHat/CentOSIntegration and deployment of RedHat Satellite in complex environments + trainingBug reporting and feature requests to RedHat supportDevelopment and deployment of hardened OS images (ANSSI BP-028 & DAT-NT28)Automation / Industrialization of deployments: GitLab / SonarQube / Selenium / Jenkins / Artifactory / AnsibleAnalysis of security incidents / vulnerabilities and definition of remediation action plans + management- Implementation of alternatives to ChatGPT (on premise) using Open Source solutions (Chatbot + API + Mistral AI models)Clients: Enedis, Docaposte, Consotrust, Ministry of the Interior, [Confidential], ...
- Interflora FranceInfrastructure Architect / Senior Systems and Network AdministratorE-COMMERCEAugust 2018 - December 2019 (1 year and 4 months)Lyon, France- Supervision and management of load testing / performance testing campaigns- Implementation of a Disaster Recovery Plan (DRP)- Industrialization of deployments (Jenkins/Ansible)- Redesign, harmonization, and update of environments (testing, pre-production, and production)
- SIITechnical Infrastructure ExpertDIGITAL AND ITApril 2018 - August 2018 (4 months)Lyon, FranceWithin the ADAJE team (Enedis IT Department/AUDES):Automated deployments via Jenkins & Ansible (deployment pipeline)Client: ENEDIS (EDF group)
Reviews
Julien
2JDB
Reviewed on 11/23/2021
Eric is efficient, offers great advice, and is very available, as always during his interventions.
Eric has chosen to hide 2 reviews
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Education
- BAC STI Electrical EngineeringLycée Gaston Crampe1998
- BTS Industrial ComputingECE Tech (ex ECTEI)2000
Certifications
- IBM Cybersecurity AnalystCoursera & IBM2024
- Google CybersecurityCoursera & Google2024