Antonio Baltazar

Systems Administrator / DevOps Engineer

13+ years of professional experience, dynamic and detail-oriented Systems Engineer with solid experience supporting on-premise, cloud, and hybrid infrastructures with web apps ranging from WordPress, Drupal, to fully custom PHP and Java applications.

Highly skilled in architecting scalable web system infrastructures.


Experience

Cloud DevOps Engineer

December 2019 - Present

Systems Administrator

  • Migrated on-premise infrastructure to AWS.
  • Designed fault-tolerant environments.
  • Streamlined developer workflow for rapid development and deployments; using tools like Vagrant, docker-compose, and Git.
  • Automated system deployments and changes using tools like Ansible, Terraform, and CloudFormation.
  • Containerized all core web applications.
  • Worked on improving application performance (CDN services, Varnish and Memcached caching, Apache and PHP optimization, and application profiling).
  • Created CI/CD processes with regression testing, allowing for deployments with zero downtime.
  • Implemented a wide variety of custom application and system monitoring solutions.
September 2013 - July 2019

Data Center Operations Administrator / Systems Administrator

  • Collaborated with the Network and System Engineering teams to ensure smooth and reliable operations at all times.
  • Provided Level 2 support; assisted, and mentored Level 1 Tech Support Specialists.
  • Monitored services across thousands of machines (physical and virtual) via Nagios.
  • Perl programming using custom in-house APIs to proactively identify and fix services.
  • Solaris 11 System Administration; Large scale ZFS backup storage nodes.
  • ZFS pool and traditional hardware RAID rebuilds.
  • Racked and provisioned new physical servers.
November 2012 - September 2013

Systems Administrator

Pictage, Inc.
  • Responsible for all backup and restore operations.
  • Oversaw complex systems infrastructure in order to fix or escalate any issues immediately as they occurred.
  • Troubleshooted proprietary photography applications running on Linux and Windows platforms.
  • Wrote custom Perl scripts to automate manual tasks.
  • Performed data center operations such as racked/unracked servers, KVMs, network cabling, and hard drive replacements.
July 2012 - October 2012

Systems Administrator

Lead Systems Administrator:
  • Administered over 50 web applications across different hosting providers. (managed and unmanaged)
  • Implemented proper security access controls, monitoring, alerting and reporting of the existing system infrastructure.
  • Migrated on-premise infrastructures to AWS or other managed hosting solutions.
  • Designed, tested, and implemented custom backup solutions.
  • Architected and documented new and existing system infrastructures (development and production).
  • Custom Apache web server configurations.
  • SSL certificate management through all major Certificate Authorities.
  • Primarily used PHP, Perl, and Bash for all custom scripting solutions.
  • Monitored MySQL servers; created, restored databases/tables as needed.
  • Performed DNS updates via BIND and web portals.
  • Custom mail server configurations using Exim, Sendmail, Postfix, and Sendgrid.
  • Occasional backend PHP web programming.
Desktop/IT Support:
  • Responsible for all office IT operations.
  • LAN/WAN administrator for over 50 end-users located on multiple locations with mixed Active Directory environments.
  • Cisco ASA firewall/VPN configurations (via ASDM).
  • Mail server administrator.
June 2008 - July 2012

Education

ITT-Technical Institute San Bernardino, CA

Bachelor Degree of Science
Information Security Systems
September 2006 - September 2008

ITT-Technical Institute San Bernardino, CA

Associate Degree of Science
Computer Network Systems
June 2004 - September 2006

Skills

Programming Languages:
  • Bash / Shell
  • PHP
  • Perl
  • Ruby
  • Python
Databases:
  • MySQL / MariaDB
  • PostgreSQL
  • Memcached (distributed memory object caching)
  • Elasticsearch (distributed full-text search engine)
Configuration Management and Automation:
  • Ansible
  • Puppet
  • Terraform
  • Kickstart
  • Vagrant
Continuous Integration / Delivery, Version Control:
  • Jenkins
  • Atlassian Bamboo
  • Git
  • Subversion
Monitoring and System Performance:
  • Nagios
  • Graphite
  • Grafana
  • ELK Stack
  • Prometheus
  • CloudWatch
  • Ganglia

Contact

root[@]antoniobaltazar.com

For the ultra paranoid:
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Interests

Apart from being a sysadmin, I'm an avid futebol (soccer) aficionado. In my spare time, I also enjoy geeking out on reading Fantasy, Mythology, History, and studying Languages (Native Spanish and English, Intermediate Portuguese).

I love keeping my skills up-to-date by continuously exploring and testing new technologies in my home lab.


Projects & Certifications


  • AWS Certified Cloud Practitioner
  • AWS Certified Solutions Architect - Associate
  • AWS Certified Developer - Associate
  • Novell Certified Linux Administrator
  • CompTIA Cloud Essentials Certified Associate
  • CompTIA Linux+ Certified Professional
  • CompTIA Network+ Certified Professional
  • CompTIA A+ Remote Support Certified Technician
  • AWS Certified Cloud Practitioner badge
  • CompTIA Cloud Essentials badge
  • CompTIA Linux+ badge
  • CompTIA Network+ badge
  • CompTIA A+ badge
(Outdated):
  • Linux Professional Institute Level 1 Certified Linux Systems Administrator (LPIC-1)