Ongoing project

In an effort to reduce the risk score produced by scanning the environment with Rapid7 InsightVM, I developed a Chef-based automated patching solution for Linux servers. This solution was able to automatically patch most recent versions of Ubuntu, CentOS, Red Hat and Amazon Linux 2 following a predeclared maintenance calendar. Using Ansible, I developed a basic idempotent playbook to deploy the Chef client to machines that weren't running the Chef-client and service yet. Several applications running on deprecated versions of Linux operating systems (SLES 11-13, OpenSuse 11-13, CentOS 4-5) had to be migrated to newer and supported operating systems. Some of the homegrown applications were developed using deprecated versions of Ruby or Perl and had to be updated as well. A few MariaDB databases had to be migrated to newer, supported versions.

• Implementation and general support of software solutions following the DTAP principle
• Guaranteeing uptime of critical infrastructure and applications (rotating 24/7 on-call duty)
• Supporting over 900 servers using industry standard SCM tools
• Automating tasks by writing scripts in:
  • Bash
  • Python
  • Powershell
  • Perl

• On-site support agent on weekly or bi-weekly basis for several companies with up to 250 users
• Second line support over phone and e-mail to mostly SMEs
• On-site installations and interventions
• Selling solutions fitting our customers' needs and assisting with the implementation of said solutions
• Providing client, server and network support
  • Client
    • OS
      • Microsoft Windows: 7 through 10
      • Apple macOS: 10.6 through 10.13
      • Multiple Linux flavours
    • Office: 2010, 2013, 2016 and O365
  • Server
    • OS
      • Microsoft Windows Server: 2003 through 2016
      • Linux: CentOS, CoreOS, Debian, FreeBSD, Ubuntu
    • Email: Exchange 2010, 2013 and Online
    • Website management: Plesk, CPanel and DirectAdmin
    • Monitoring: HP iLO, Dell iDRAC, Solarwinds N-Able
    • DNS configuration
    • Deployment and maintenance of AV solutions: Symantec, Trend Micro, Sophos
    • Backup solutions: Veeam Endpoint Backup, Windows Backup, Symantec/Veritas Backup Exec
  • Network
    • WiFi: deployment and management of APs: Ubiquiti/Cisco/Netgear
    • Switching/Routing: HP/Cisco/Netgear/D-Link
    • Firewall: Fortinet/pfSense/Watchguard/Netgear