Aleksandr Korostasov
Dublin,Ireland
Summary
Experienced IT Support and Systems Specialist with a strong background in Windows environments, hardware deployment, endpoint management, network support, and customer-focused troubleshooting. Proven ability to support hybrid infrastructures, work with Microsoft 365 ecosystem (Teams, SharePoint, Outlook), manage ticketing systems, and implement IT solutions. Strong team player with hands-on skills in automation, system upgrades, asset tracking, and secure IT operations. Fluent in English and Lithuanian.
Overview
15
15
years of professional experience
1
1
Certification
Work history
Desktop Engineer, IT Operations (L2)
Permanent TSB
Dublin
09.2022 - 09.2025
- Delivered L2 hardware and software support to end-users both on-site and remotely.
- Deployed and configured laptops, desktops, printers, and mobile devices efficiently.
- Facilitated VPN access, Citrix XenApp, and enterprise applications for seamless connectivity.
- Executed OS patching, upgrades, virus remediation, and imaging tasks systematically.
- Managed user accounts through Active Directory and Office 365, supporting migration processes.
- Participated in IT asset rollouts, AI integration, and CCTV upgrade projects effectively.
- Enhanced security with regular system checks and updates.
Server Assembly Operator
Jabil EMS
07.2021 - 09.2022
- Assembled and tested servers to hardware specification
- Rack installation, debugging, and component-level verification
IT Helpdesk Administrator
Squared Financial Group
01.2019 - 01.2020
- Handled support tickets for Windows issues, backups, AV, hardware
- Created AD accounts, configured laptops, supported remote users
- Managed asset inventory and escalated complex issues to L3
IT Systems Administrator
Retail Media Systems
01.2011 - 01.2019
- Maintained Linux/Windows environments for retail clients
- Supported digital signage hardware/software in production sites
- Managed backups, servers, and performed system upgrades
Education
Diploma - Advanced PC Maintenance & IT Security
College Of Management And IT
Bray, County WicklowMaritime Engineering Diploma -
Skills
- Windows 10 and 11
- Microsoft 365 applications
- Active Directory and Azure AD
- DNS, DHCP, and VPN
- Laptop and desktop imaging
- SCCM fundamentals
- Mobile device management
- PowerShell and Bash scripting
- Office hardware support
- Ticketing systems expertise
- User onboarding processes
- Network troubleshooting techniques
- Backup monitoring strategies
Certification
- CompTIA A+, CompTIA Security+
- Full Irish Driving Licence
Languages
English (Fluent)
Russian (Native)
Lithuanian (Conversational)
Timeline
Desktop Engineer, IT Operations (L2)
Permanent TSB
09.2022 - 09.2025
Server Assembly Operator
Jabil EMS
07.2021 - 09.2022
IT Helpdesk Administrator
Squared Financial Group
01.2019 - 01.2020
IT Systems Administrator
Retail Media Systems
01.2011 - 01.2019
Diploma - Advanced PC Maintenance & IT Security
College Of Management And IT
Maritime Engineering Diploma -
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