Bert Cosemans

Linux/Unix

• RedHat - 5
• Debian - 5
• SLES (SuSe) - 5
• Linux (generic) - 5
• HP-UX - 3
• Solaris - 2

Administration

• Packaging (deb & rpm) - 5
• Automated installation (FAI,cobbler,kickstart) - 5
• Configuration management (puppet, chef, ansible) - 5
• Infrastructure as code (packer, cloudformation, terraform) - 5
• Basic tools (sed, awk, vi, ssh) - 5
• System debugging (strace, ltrace, lsof) - 5

Backup

• Amazon snapshots - 5
• Custom (tar, rsync) - 5

Languages

• C - 2
• C++ - 2
• perl - 4
• groovy - 4
• python - 4
• ruby - 4
• bash - 5
• korne shell (ksh) - 5
• php - 3
• java - 2
• go - 3

Services

• Application (tomcat, jboss, jetty) - 4
• CI tools (jenkins, bamboo) - 5
• Web (apache, nginx) - 5
• Proxy (Squid, varnish) - 5
• DNS server (bind, powerdns) - 5
• Mail server (postfix, exim, ...) - 5
• FTP server (proftpd, vsftpd, ardftpd, ...) - 5
• NFS - 5
• Samba - 5
• VOIP (Asterisk) - 3
• SOLR - 3
• LDAP - 4
• Memcache - 4
• Elastic (ELK) - 4

Monitoring

• Newrelic - 5
• Cacti - 4
• Nagios - 5
• Nagios plugin development - 5
• Munin - 5
• Check-mk - 5

Databases

• Oracle - 3
• MySQL - 5
• DB2 - 1
• MongoDB - 3

HA

• Clustering - 5
• Microservices - 5
• f5 loadbalancer - 5
• LVS loadbalacer - 3

Networking

• Switching - 4
• Routing - 5
• Protocols - 5
• Firewall - 5
• Cisco - 4
• Juniper - 3
• IPv6 - 5

Hardware

• HP Storage - 4
• IBM Storage - 4
• Sun Storage - 4
• HP Servers - 4
• HP Moonshot - 4
• Nutanix - 4
• IBM Servers - 4
• Sun M500-9000 - 4

Virtualization

• Docker - 5
• Xen - 5
• Vmware - 4
• Rackspace cloud - 5
• AWS cloud - 5
• Soflayer cloud - 5
• Vagrant - 5

Filesystems

• Ext* - 5
• zfs - 4
• ufs - 4
• LVM - 5
• IBM GPFS - 4
• GlusterFS - 4
• reiserfs - 5
• Ceph - 4

Misc

• Application load testing - 4
• Security auditing - 4
• subversion - 5
• HP openview - 3
• omnitracker - 3
• Adobe Experience Manager - 5
• Atlassian tools - 5

Telenet Site reliability engineer - Mechelen, 2023

• Manage in-house developed inventory application
• Setup and HA configuration of hashicorp vault
• Automate application installation and upgrade using ansible
• Github and Jenkins administration
• Python dependency and version management

Cegeka System engineer - Hasselt, 2017 - 2023

• Manage HP Superdome servers ( HP-UX )
• Manage farms of Linux VM's
• Automate server administration using puppet and ansible
• Scripting (Bash/Perl/Groovy)
• Creation of pipelines using jenkins with shared libraries
• Development of jenkins shared libraries in groovy
• Migration from puppet to ansible

BOSE Devops engineer - Tongeren, 2016 - 2017

• Automate deployment of Adobe AEM instances using chef
• Automate deployment of hybris instances using chef
• Automate infrastructure code testing using kitchen
• Automate deployment of microservices on docker
• Monitoring using ELK and newrelic
• AWS deployments
• Scripting (Bash/Ruby/Python)

VRT System and storage engineer - Brussels, 2009 - 2013

• Maintain the servers and storage for the DMF (Digitale Media Fabriek) consisting of 50+ servers and close to 100 TB of storage
• Installation and configuration of new hardware
• Webfarm maintenance ( deredactie.be / sporza.be ), an environment consisting of 200+ servers
• Server installation with CSM / puppet / cobbler
• Server deployment with CSM / puppet / cobbler
• Scripting
• GPFS
• Maintain the Websphere ESB platform
• Webapplication load testing
• Creation of virtual HA hosting platform using Xen

King-foo System Engineer Linux - Aarschot, 2010 - present

• Installation and setup of Xen virtualized infrastructure

EURid Technical support officer - Diegem, 2005 - 2009

• Setup and maintain nameserver infrastructure for the .eu domain
• Maintain the servers for the registration system (Linux and Solaris)
• Installation and configuration of new hardware
• Design / Deploy redundant nameserver infrastructure
• Virtualize existing infrastructure ( Xen )
• Design and implement HA setup for various systems
• Setup and connect Branch offices across Europe
• Maintain and optimize network infrastructure
• Installation and configuration of disaster recovery mirror site

UniWeb Systems and network administrator - Strombeek-Bever, 2002 - 2005

• domain name management
• order processing
• customer service
• troubleshooting
• maintenance
• backups
• Setup of multihomed AS using 2 providers
• IP migration to new multihomed network

2014

• Cisco CCNP Certified

2011

• Cisco CCNA Certified

2009

• Solaris zones course

• Solaris 10 features for administrators course

• Solaris ZFS course

• Sun SPARC Enterprise MX000 course

• GPFS administration course

2008

• System administration for the solaris 10 OS

• Dutch: mother tongue
• English: Very good
• French: Good
• German: Okay