Kristian Gasic

2nd and 3rd-Level Support

Kristian Gasic
Dornum, Germany

Experience

Nov 2023 - Jun 2024
8 months
Remote

2nd and 3rd-Level Support

Samhammer AG

  • Call and ticket processing using ticketing systems
  • Providing expert user support
  • Remote troubleshooting for hardware and software issues
  • Assigning and installing software via remote access
  • Assisting users with setting up computers and mobile devices
  • User management for various applications
  • Close collaboration with clients (2nd and 3rd-Level Support)
Dec 2019 - Nov 2023
4 years

IT Technician

Computacenter AG & Co.OHG

  • Responsible for full installation, maintenance, and repair of technical systems and equipment on-site
  • Performing independent diagnostics and troubleshooting of hardware and software issues
  • Regularly performing maintenance tasks to ensure smooth operation and system efficiency
  • Providing direct customer support and technical advice, including user training on new technologies and system updates
  • Effectively documenting all technical incidents and solutions to continuously improve service
  • Responding quickly in emergencies to minimize downtime and restore critical system functions
Oct 2017 - Dec 2019
2 years 3 months

Linux Administrator

SAS - WAF.TO IT Security UG

  • Responsible for managing and expanding the local IT infrastructure, including client operating system administration
  • Managing virtual server environments
  • Leading IT projects with a focus on efficient execution and quality assurance
  • Coordinating first and second level support to ensure smooth operations
  • Managing server service level agreements (SLA) and implementing SAS solutions for Azure cloud
  • Using modern monitoring tools like Checkmk and Icinga2 to monitor the IT infrastructure
Jan 2014 - Oct 2017
3 years 10 months

Development Engineer

QuestBack GmbH

  • Experience developing and maintaining CI/CD pipelines with tools like GitLab and Jenkins
  • Extensive knowledge managing container-based infrastructures with Docker
  • Using advanced monitoring tools like Grafana, Prometheus, EFK stack, and Nagios for performance monitoring and troubleshooting

IT System Administrator

Unitymedia NRW GmbH

  • Operating the in-house IT infrastructure
  • Planning and further developing the IT infrastructure
  • Supporting technical staff and customers
  • Defining standards for networking, servers, operating systems, telephony, etc.

Summary

Experienced Linux system administrator with solid knowledge in system configuration, troubleshooting, and security. Has a proven track record managing large data centers and implementing efficient solutions. Ready for new challenges and always striving to develop and implement innovative solutions.

Skills

  • It Security
  • Monitoring
  • Cloud Platforms
  • Hosting
  • Container Technologies
  • Virtualization
  • Troubleshooting
  • Webserver Management (E.g., Apache, Nginx)
  • Hosting Platform Knowledge (E.g., Cpanel, Plesk)
  • Linux System Administration
  • Scripting And Automation (E.g., Bash, Python)
  • Itil Framework And Processes
  • Server Management
  • Backup And Recovery Strategies
  • Customer Communication And Support Skills
  • Automation
  • Security Management
  • Communication
  • Monitoring And Performance Optimization
  • User Training And Education

Languages

German
Advanced
English
Advanced
Croatian
Advanced

Certifications & licenses

SAS® VIYA® DEPLOYMENT

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