About Me

I graduated in Communication Networks Engineering from the University of Brasília, Brazil. During the Fall 2015 and Spring 2016 I attended Colorado State University, USA and during the Summer 2016 worked as a TA for the CS430 - Database Systems class.
My first job with Systems Administration was in 2012, when I was admitted to the University of Brasilia, although my experiences fiddling with computers and networks started around 2005.
When I was 11, I learned Delphi 7 and began to play with programming. Many years passed, I learned a few more programming languages and left aside programming to focus on System Administration and Networks skills.

Contact Details

Luiz Fernando Ribeiro Amaral
email@luiz.eng.br

Education

Colorado State University, USA

Electrical Engineering, Visiting International Program • August 2015 - May 2016

University of Brasilia, Brazil

B.Eng. in Communication Networks Engineering • March 2012 - July 2018

Work

InnoGames GmbH

Network Engineer• February 2021 - Now

  • Maintaining the datacenter infrastructure that is home to 300+ physical servers and ~10.000 virtual machines
  • Development of an IPv6-only Baremetal Provisioning system

InnoGames GmbH

System Administrator • February 2019 - February 2021

  • Maintaining the Naemon-based monitoring system, overseeing about 7.000 hosts and 300.000 service checks
  • Development of new monitoring checks as well as the enhancement of existing ones: GitHub: innogames/igmonplugins
  • Designing and implementing a highly available setup for the mission-critical Marketing systems (Social Login and Marketing Landing Pages)
  • Enhancing and maintaining the Continuous Integration pipelines, including dockerizing the build process.

Decision Technologies Laboratory - Latitude at University of Brasilia

System Administrator • November 2016 - January 2019 | April 2012 - July 2015

  • Designed and built from ground up the initial data center infrastructure, comprised of 32 servers and a SAN array.
  • Managed a System Center High-Availability cluster, hosting over 100 virtual machines, mostly Ubuntu, with some CentOS.
  • Installed and configured Zabbix and Elastic Stack for monitoring hosts, tuned Zabbix for better performance and created the majority of the Grafana dashboards.
  • Architected and implemented a secure DNS/Bind infrastructure, making use of hidden-master, DNSSEC and split-horizon technologies.
  • Automated part of the infrastructure using Puppet at first and later SaltStack. Coded many of the Puppet classes and Salt states.

Grupo Brasal

System Administrator • July 2017 - January 2018

  • Implemented and managed a remote virtualized infrastructure based on VMware ESXi.
  • Deployed Zabbix, Elastic Stack and Grafana for monitoring host and service health.
  • Automated routine tasks with SaltStack, including software deployment and configuration management.
  • Designed and installed a version control system with GitLab, including a Continuous Deployment solution.

UbiCity - Smart Cities

System Administrator• November 2016 - March 2017

  • Setup and deployed a Nginx load balancing proxy.
  • Created and managed virtual machines with VMware ESXi.
  • Architected and implemented a Continuous Deployment solution with GitLab to maintain code versioning and push updates to the servers.

Dept. of Computer Science - Colorado State University

Teaching Assistant • May 2016 - August 2016

  • Prepared homework answer keys.
  • Graded homework assignments.
  • Helped the students through the online learning platform and in-person during office hours.

Qualification

  • Engineering in New Media & Broadcasting Technologies

    Globo Comunicações S.A. • 60 hours • March - June 2015

  • Systems and Networks Security

    ESR - Brazilian National Research Network • 40 hours • February 2014

  • IP Routing Protocols

    ESR - Brazilian National Research Network • 24 hours • May 2013

  • TCP/IP Networks Architecture and Protocols

    ESR - Brazilian National Research Network • 40 hours • March 2013

Skills

  • Advanced
    • Network & systems troubleshooting
    • Zabbix
    • Grafana
    • Bind DNS Server
    • Ubuntu Server
  • Intermediate
    • CentOS
    • Python & Bash Scripting
    • Git & GitLab CI/CD
    • Nginx
    • Elastic Stack (ELK)
    • Dell & HPE Switches, Cisco ASA
    • System Center Virtual Machine Manager
    • Windows Server & Hyper-V
    • Active Directory
  • Beginner
    • SaltStack
    • VMware ESX
    • Puppet/Foreman
    • BareOS/Bacula
    • System Center Configuration Manager