Thomas Varetz
Thomas Varetz
IT Architect & DevOps Engineer

Skills
Skills

- Communication
- Leadership
- Team management
- Systems and network administration
- Production
- Live System Support
- Project implementation and project owner

Languages
Languages
French
Mother tongue
English
C1 - Advanced

Hobbies
Hobbies

Travel, Photo, Cryptocurrency, DIY, Origami, Music

Contact
Contact

Thomas VARETZ
78125 Vieille-Église-en-Yvelines

+33 (0)6 37 66 29 06
thomas@varetz.fr

Miscellaneous
Miscellaneous

41 years old
Driver's license - with vehicle

Technologies
Technologies

Linux :
Debian / Ubuntu, Red Hat / CentOS, FreeBSD

Container :
Kubernetes, Helm, Docker, Kong, Cert-manager, Vsphere / Openstack CSI, K3s, MiniKube, KinD

DevOps, CI/CD, IaC :
Ansible, Gitlab, Terraform, Puppet, Chef

Cloud :
Cloudflare, AWS, GCP, Azure, Scaleway, OVH

Web server :
Nginx, Apache, Lighttpd, Tomcat, Caddy

Database :
Mysql / Mariadb, Postgresql, Sqlite

High availability :
Squid, Haproxy, Keepalived

Monitoring and metrics :
Zabbix, Prometheus, Grafana, Thanos, Alertmanager, Loki, Munin, Mon, Nagios

Virtualization :
Lxc, Kvm, Proxmox, Xen, Virtualbox, Vmware

Programming / Scripting :
Bash, Php, Html, Perl, Python, Javascript, Ruby

Security :
Fail2ban, Rkhunter, Zed Attack Proxy, Greenbone Security Manager

Firewall :
Unifi, pfSense / OPNSense, Zyxel, Iptables, Shorewall, Ufw, Palo Alto

Diagnostics :
Strace, Syslog, Top, Netstat, Lsof

Backup :
Rsync, Snapshot, Rsnapshot, Bacula, Backup-manager, Cp

Remote control :
Ssh, Vnc, Telnet, Nx, Rdp

High performance :
Openmpi, Numa, Slurm, Munge

Network :
TCP/IP, Lan, Vlan, Dhcp, Pxe, Tcpdump, Loadbalance

Server :
Ftp, Dns, Smtp, Imap, Pop

 
     

Thomas Varetz
IT Architect & DevOps Engineer
 
Professionnal experiences
AIRBUS DS SLC
Elancourt
IT Architect & Integrator
april 2022 - Today
AIRBUS DS SLC
Elancourt



Technical environment
Technical environment
- Kubernetes, Helm, Docker, Kong, Cert-manager, Vsphere / Openstack CSI, K3s, MiniKube, KinD
- Ansible, Gitlab, Terraform
- Prometheus, Grafana, Thanos, Alertmanager, Loki
 
BERTIN IT
Montigny-le-Bretonneux
Senior Linux Administrator / DevOps Engineer / Team leader
march 2018 - march 2022
BERTIN IT
Montigny-le-Bretonneux

Within a team of 3 people with a fleet of 170 equipment, for SME / key account customers (CA-CIB, Société Générale, Cision, Kantar media).

Objectives: Transform a homemade solution of "Speech-to-Text" in a turnkey product that can be installed in a high security constraints environment (banking trading rooms). Definition of the infrastructure needs, implementation, production and LSS of the fleet. Maintain the CI / CD pipeline as well as the middleware developed for the "Speech-to-Text" product. Manage the team, coordinate its work and anticipate its areas of development.

- Development of a state-of-the-art application stack, distributable by package manager
- Establishment of a complete CI / CD pipeline used as a reference by other products
- Integration of SaaS and On-premise solutions
- Work in close collaboration with product managers, development / R&D teams
- Carry out the installation of the various products, carry out the necessary implementation and qualification operations
- Service level guarantor and customer / user representative
- In charge of LSS for SaaS production, internal infrastructures and supplier management
- Monitoring of indicators, incidents, requests and creation of operational reporting
- Identification of improvement plans for the various processes
- Writing of technical documents and detailed installation procedures
- Participation in customer training on technical administration and advanced solutions functions
- Definition and evaluation of individual objectives, in line with the company's strategy
- Responsible for organizing the team and developing individual / collective capacities
- Support and management of customer projects, from launch to delivery
- Rationalization and cost reduction
- Participation in pre-sales

Technical environment
Technical environment
- LEMP Stack + Slurm clusters
- Chef Omnibus : Creation of a full-stack package with single file configuration
- CI/CD pipeline : Gitlab-ci, Docker, Terraform, Ansible, Proxmox
- Packages server apt (nginx + freight) and yum (nginx + createrepo)
- Middleware in Bash using Chef Omnibus Ruby models, automatic launch of "Speech-to-Text" processing on new file arrival with Fswatch
- Proxmox Clusters
- Monitoring and metrics with Zabbix server / proxy, Grafana
 
SAT-OCEAN
Versailles
IT manager
January 2016 - October 2017
SAT-OCEAN
Versailles

In charge of a fleet of 130 equipment, for key account customers (Total, Shell, Bp, ExxonMobil).

Objectives: Fleet implementation, production and LSS.

- Development of the technical strategy in line with the company objectives
- Management of the information system and development of business projects
- Functional studies and architectural recommendations
- Management of suppliers
- Installation, maintenance and securing of the information system
- Support, assistance and training for users and cross-functional functions

Technical environment
Technical environment
- HPC Clusters (10-16 nodes each) on Ubuntu with OpenMPI, Numa, Knem, for Hycom et Matlab application
- NFS storage server of 300TB in Raid 60 with Multipath and data replication
- Infiniband / Ethernet network for 4 bays in private room
- Virtual machines with LXC containers
- Deployment with Ansible and Docker
- Multisite interconnection and security with Openvpn, Shorewall, Fail2ban
- LEMP servers
- Load balancing and high availability with Keepalived, Haproxy, Nginx
- DNS (Bind), Mail (Cyrus, Postfix, Spamassassin), FTP (Proftpd)
- Monitoring and metrics with Zabbix + development of internal tools (Bash, Php/Mysql, Snmp)
- Project management with Redmine
 
SERVEUR-EXPRESS
Vincennes
System and network administrator
October 2010 - November 2015
SERVEUR-EXPRESS
Vincennes

Within a team of 3 people with a fleet of 200 equipment, for VSE / SME customers (Grosbill, Auchan, programme-tv.net).

Objectives: Fleet implementation, production and LSS.

- Level 3 incident management / resolution
- Client project management: Needs collection, Build (implementation), Run (production, LSS)
- Supervision of systems and applications, during the day and on call 24/7
- Users support
- Pre-sale

Technical environment
Technical environment
- LAMP / LEMP servers on Debian
- Virtual machines with KVM
- Multisite interconnection and security with Openvpn, Iptables, Fail2ban
- Load balancing and high availability with Keepalived, Squid, Nginx
- DNS (Bind), Mail (Courier / Dovecot, Postfix / Qmail, Spamassassin), FTP (Pureftpd)
- Monitoring and metrics with Munin and internal tools
- Management of client projects with Redmine or Gitlab
- Managing customer tickets with Cerberus
 
AGARIK
Saint-Ouen
System and network administrator
January 2009 - October 2010
AGARIK
Saint-Ouen

Within a team of 30 people with a fleet of more than 1000 equipment, for SME / key account customers (Dassault, Sfr, JeuxVideo.com).

Objectives: Maintaining the fleet in operational condition.

- Level 2 incident resolution and scalable maintenance
- Users support
- Supervision of systems and applications, 24/7 in 3x8
- Live System Support

Technical environment
Technical environment
- LAMP servers on Centos
- Virtual machines with Vmware
- Multisite interconnection and security with Openvpn, Iptables, Fail2ban
- DNS (Bind), Mail (Dovecot, Sendmail, Spamassassin), FTP (Proftpd)
- Monitoring, metrics and management of customer tickets with internal tools
 
ALPHA WEB
Île-de-France
Entrepreneur
December 2005 - May 2017
ALPHA WEB
Île-de-France

EURL : Dec. 2005 - Dec. 2008 / Auto-entrepreneur : Mar. 2009 - May. 2017, with more than 300 customers (1/3 VSE/SME, 2/3 individuals).

- Administrative, financial and technical management of the company
- Customer / supplier relationship management
- IT outsourcing
- Website development
- Hardware sale

Technical environment
Technical environment
- LAMP / LEMP servers on Debian
- Virtual machines with Openvz / LXC containers (Proxmox)
- Deployment with Ansible and Docker
- Multisite interconnection and security with Openvpn, Shorewall, Fail2ban
- DNS (Bind), Mail (Dovecot, Postfix, Spamassassin), FTP (Pureftpd)
- Load balancing and high availability with Keepalived, Haproxy, Nginx
- Monitoring and metrics with Zabbix, Munin, Mon + development of internal tools (Bash, Php/Mysql, Snmp)
- ERP and CRM with Dolibarr
 
Professional training
ITIL® Foundation v3
2018
 
Diplomas
BTS Informatique de gestion Spécialité ARLE
2005
 
Technologies

Linux :Debian / Ubuntu, Red Hat / CentOS, FreeBSD

DevOps, CI/CD, IaC :Ansible, Gitlab, Docker, Kubernetes, Terraform, Puppet, Chef

Cloud :Cloudflare, AWS, GCP, Azure, Scaleway, OVH

Web server :Nginx, Apache, Lighttpd, Tomcat, Caddy

Database :Mysql / Mariadb, Postgresql, Sqlite

High availability :Squid, Haproxy, Keepalived

Monitoring and metrics :Zabbix, Prometheus, Grafana, Munin, Mon, Nagios

Virtualization :Lxc, Kvm, Proxmox, Xen, Virtualbox, Vmware

Programming / Scripting :Bash, Php, Html, Perl, Python, Javascript, Ruby

Security :Fail2ban, Rkhunter, Zed Attack Proxy, Greenbone Security Manager

Firewall :Unifi, pfSense / OPNSense, Zyxel, Iptables, Shorewall, Ufw, Palo Alto

Diagnostics :Strace, Syslog, Top, Netstat, Lsof

Backup :Rsync, Snapshot, Rsnapshot, Bacula, Backup-manager, Cp

Remote control :Ssh, Vnc, Telnet, Nx, Rdp

High performance :Openmpi, Numa, Slurm, Munge

Network :TCP/IP, Lan, Vlan, Dhcp, Pxe, Tcpdump, Loadbalance

Server :Ftp, Dns, Smtp, Imap, Pop