{ "$schema": "https://raw.githubusercontent.com/jsonresume/resume-schema/master/schema.json", "basics": { "name": "Eric Grunwasser", "label": "Freelance Linux, Infrastructure & Cybersecurity Expert", "image": "assets/private/portrait.jpg", "email": "eric@grunwasser.fr", "url": "https://cv.grunwasser.fr/en/", "summary": "Senior consultant with more than 25 years of experience designing and operating critical infrastructure. Expertise in Linux, cybersecurity, automation, high availability and performance. Experienced in complex environments, large-scale migrations, level 3 support and the technical management of teams of up to 6 people. Results-oriented approach focused on reducing risk, industrialising deployments, improving availability and controlling costs. Eligible for TS security clearance under French IGI No. 1300 (formerly TSD).", "location": { "postalCode": "75011", "city": "Paris", "region": "Île-de-France", "countryCode": "FR" }, "profiles": [ { "network": "LinkedIn", "username": "eric-grunwasser", "url": "https://www.linkedin.com/in/eric-grunwasser" }, { "network": "Malt", "username": "ericgrunwasser", "url": "https://www.malt.fr/profile/ericgrunwasser" }, { "network": "GitHub", "username": "grunwasser", "url": "https://github.com/grunwasser" } ], "availability": { "status": "Open to opportunities", "period": "approximately 1 month" } }, "work": [ { "name": "GRUN IT Consulting", "position": "Infrastructure, Linux & Cybersecurity Consultant", "location": "Paris", "startDate": "2020-01", "endDate": "", "highlights": [ "Advised large enterprises and public-sector organisations on audits and training in security and automation best practices, helping improve compliance with ANSSI standards.", "Provided level 3 support for Debian Linux and Red Hat Enterprise Linux / CentOS.", "Integrated Red Hat Satellite into complex environments, trained teams and coordinated with vendor support.", "Designed and deployed hardened OS baselines aligned with ANSSI BP-028 and DAT-NT28 guidance, improving the security of critical infrastructure.", "Industrialised deployments with Ansible, Terraform, GitLab CI/CD, Jenkins and Artifactory.", "Reduced hardened VM deployment time by 50% by optimising Terraform configurations, VMware templates and Ansible playbooks, and by using Mitogen.", "Analysed security incidents and vulnerabilities, then defined and managed remediation plans to reduce risk and improve system resilience.", "Deployed open-source alternatives to ChatGPT, including chatbots, APIs and Mistral AI models.", "Used AI-assisted code generation and review with Codex and Claude Code.", "Clients : Docaposte, Lacoste, Enedis, Consotrust, the French Ministry of the Interior and confidential assignments." ] }, { "name": "Interflora", "position": "Infrastructure Architect / Senior Systems and Network Administrator", "location": "Lyon", "startDate": "2018", "endDate": "2019-12", "highlights": [ "Led load and performance testing campaigns.", "Implemented a disaster recovery plan.", "Industrialised production deployments with Jenkins and Ansible.", "Redesigned and standardised test, pre-production and production environments." ] }, { "name": "SII", "position": "Infrastructure Technical Expert", "location": "Lyon", "startDate": "2018", "endDate": "2018", "highlights": [ "Implemented automated deployments and production release pipelines with Jenkins and Ansible for Enedis's ADAJE team." ] }, { "name": "Interflora", "position": "Infrastructure Architect / Senior Systems and Network Administrator", "location": "Lyon", "startDate": "2016", "endDate": "2017", "highlights": [ "Managed incidents and changes across infrastructure distributed over three data centres.", "Designed a scalable platform to handle activity peaks, improving availability and reducing costs by 80%.", "Migrated hosting from NBS to OVH and deployed Hybris to production.", "Stack: Ansible, Proxmox, LXC, pfSense, Nginx, HAProxy, MaxScale and a Percona XtraDB cluster." ] }, { "name": "Profideo", "position": "IT Operations Manager", "location": "Saint-Ouen", "startDate": "2015", "endDate": "2015", "summary": "Organised IT operations and managed a six-person team covering monitoring, incidents, service requests and systems and network architecture." }, { "name": "Amesys / Bull", "position": "Systems Engineer", "location": "Montpellier", "startDate": "2013", "endDate": "2014", "summary": "Administered VMware infrastructure across three data centres, with approximately 50 ESX hosts and 600 VMs; 200 XenApp applications; NetApp/IBM SAN storage; and PowerShell and Orchestrator automation." }, { "name": "Thanis", "position": "Open Source Systems Engineer", "location": "Paris", "startDate": "2012", "endDate": "2013", "summary": "Produced technical architecture documentation, optimised network flows, centralised logs with Syslog-NG, implemented Nagios/Munin monitoring and developed Perl/Bash scripts." }, { "name": "CIPAC", "position": "IT Manager", "location": "Nouméa", "startDate": "2009", "endDate": "2012", "summary": "Managed VMware virtualisation, Red Hat/Debian and Windows Server administration, Check Point/Astaro security, remote-site deployments and a four-person team." }, { "name": "Infolor", "position": "Network and Systems Manager", "location": "Montrouge", "startDate": "2007", "endDate": "2008", "summary": "Managed the information system and budget, Debian Linux, Cisco, NetBackup and Nagios/Cacti; conducted ISO 27001 audits; and led a multidisciplinary six-person team." }, { "name": "Document Image Solution", "position": "Network and Systems Administrator / IT Manager", "location": "Bidart", "startDate": "2006", "endDate": "2007", "summary": "Administered Windows and Debian Linux, backups, Exchange/OWA and Cisco VPNs; managed IT assets and supported approximately 80 workstations." }, { "name": "Atos", "position": "Systems Administrator / Project Manager", "location": "Nanterre", "startDate": "2001", "endDate": "2006", "summary": "Transitioned a managed-services contract; administered Citrix, Windows, Linux, Apache, PHP, MySQL, Exchange, Domino and NetBackup; and handled level 2 incidents. Clients: BNP Paribas, Cetelem, DGA and AESN." } ], "education": [ { "institution": "ECE Tech (formerly ECTEI)", "area": "Two-year technical degree in Industrial IT", "startDate": "1998", "endDate": "2000" }, { "institution": "Lycée Gaston Crampe", "area": "Technical Baccalaureate in Electrical Engineering", "startDate": "", "endDate": "1998" } ], "certificates": [ { "name": "IBM Cybersecurity Analyst", "date": "2024", "issuer": "IBM", "url": "https://www.credly.com/badges/59db769a-5ffa-4c3f-a1fc-e4711327636d/public_url" }, { "name": "Google Cybersecurity Professional Certificate", "date": "2024", "issuer": "Google", "url": "https://www.credly.com/badges/806042c5-ed4d-454b-84a4-3167043e72ca/public_url" } ], "skills": [ { "name": "Systems", "keywords": [ "Linux", "Debian", "Ubuntu", "Red Hat Enterprise Linux (RHEL)", "CentOS", "Rocky Linux", "Oracle Linux", "FreeBSD", "OpenBSD", "Windows Server" ] }, { "name": "Automation & DevOps", "keywords": [ "Ansible", "Terraform", "Puppet", "Red Hat Satellite", "HashiCorp Vault", "GitLab CI/CD", "Jenkins", "Artifactory" ] }, { "name": "Infrastructure & virtualisation", "keywords": [ "VMware", "Proxmox", "Citrix", "Kubernetes", "Docker", "LXC", "VirtualBox" ] }, { "name": "Networking & security", "keywords": [ "Cisco", "Check Point", "Fortinet FortiGate", "pfSense", "OpenVPN", "WireGuard", "PrivX", "iptables", "CrowdSec", "Fail2ban", "ModSecurity" ] }, { "name": "Web & load balancing", "keywords": [ "Apache HTTP Server", "Nginx", "HAProxy", "Traefik", "Tomcat", "IIS", "Squid", "MaxScale" ] }, { "name": "Observability", "keywords": [ "Nagios", "Centreon", "Zabbix", "Cacti", "Grafana", "New Relic", "Datadog", "Dynatrace" ] }, { "name": "Data & backup", "keywords": [ "MySQL", "Percona XtraDB", "PostgreSQL", "Veeam", "NetBackup", "Bacula", "BorgBackup", "rsync", "XtraBackup" ] }, { "name": "IAM & messaging", "keywords": [ "FreeIPA", "Red Hat IdM", "Shibboleth", "Keycloak", "Postfix", "DKIM", "DMARC", "SPF", "SpamAssassin" ] }, { "name": "Artificial intelligence & LLMs", "keywords": [ "Mistral AI", "OpenAI", "ChatGPT", "Codex", "Anthropic", "Claude Code", "Gemini", "Copilot", "Kimi" ] }, { "name": "Management", "keywords": [ "Management of teams of up to 6 people", "project management", "budgets", "incidents", "changes and suppliers" ] } ], "languages": [ { "language": "French", "fluency": "Native, C2" }, { "language": "English", "fluency": "Intermediate, B1/B2" }, { "language": "Spanish", "fluency": "Basic, A1" } ], "interests": [ { "name": "Artificial intelligence & technology", "keywords": [ "Continuous technology monitoring" ] }, { "name": "Travel & photography", "keywords": [ "Visited more than 50 countries." ] } ] }