Experience level:
More than 5 years
Education level:
Higher
Languages:
Russian: Native
English: B2
I am a system administrator with experience in managing and troubleshooting hardware and software instances and maintaining and administering IT infrastructure. I am proficient in working with Linux environments as well as Windows servers and Windows server products.
• Tied together several offices of the company creating IPSec vpn tunnels between hardware Fortigate devices.
• Reduced daily backup time by 30% by redistributing some tasks and decreasing time crossing of Acronis Backup Advanced schedule.
• Organized data exchange between local portal and Active Directory by writing and scheduling PowerShell scripts. That significantly reduced the number of issues related to user permissions and ACLs.
• Increased 10 times the upload speed to the corporate FTP server by server fine-tuning. That solved the long-lasting problem of receiving large data files from customers.
• Created documentation for employers at the local document portal. It cat off trouble tickets by 15%.
• Implemented issue tracker system (Redmine). It helped to organize the processes in the company’s IT department.
• Implemented local service for corporate meetings (Jitsi).
• Adjusted firewall settings on Fortigate gateways. The ports to administrate system were closed for external sources.
• Developed an automation of remote installing some software on employee’s workplaces.
• Organized a complex system of inventory, using a fusion inventory agent and GLPI, which saved about two weeks per year for the accountant.
• Implemented services monitoring with Zabbix. So it became much easier to prevent accidents.
• Deployed two more instances of MS Exchange 2019 servers in separate data centers to spread the workloads for the main server and improve the integrity of the mail database.
• Fixed problem with character encoding between GitLab and GitLab Runner on Windows machines. That helps developers with debug logs.
• Deployed MS Exchange 2013 into the company’s infrastructure. Implemented migration of user accounts and mailboxes from the Postfix mail system. It improved communication and made email communication stable.
• Customized local issue tracker (Jira) workflows. So, based on project and issue type, issues were distributed for various queues with different competent performers. It reduced the time lag between creating and resolving the issues.
• Divided the office’s local network into several isolated vLANs, which considerably increased security in office LAN as a team member.
• Operating Systems: Windows Server, Linux, macOS, Windows Desktop OS Family • Virtualization: KVM, VMware, Hyper-V • Scripting: Bash, PowerShell, VBA, Groovy • Networking: Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Internet Protocol Suite (TCP/IP), LAN-WAN, Firewalls, Fortinet, OpenVPN • Issue trackers: Jira, Redmine • DevOps: Git, GitLab, CI/CD, Docker, Jenkins, Puppet • Other: Active Directory, Exchange Server