Yaşar KOÇ
System Administrator
Turkoba,34
Summary
Experienced and proactive IT Infrastructure professional with over 20 years in enterprise environments spanning finance, manufacturing, pharmaceuticals, and retail. Proven expertise in Microsoft technologies, virtualization platforms, cloud security, and global infrastructure alignment. Strong knowledge in Windows Server environments, Exchange, Intune, VMware, Hyper-V, firewalls, VPNs, and backup systems. Committed to operational excellence, cybersecurity, and continuous improvement.
Overview
2026
2026
years of professional experience
5
5
years of post-secondary education
4
4
Certifications
2
2
Languages
Work History
IT Supervisor
Weicon Türkiye
07.2023 - Current
- Managed Windows Server 2012–2022 environments across the company; set up and maintained the Hyper-V virtualization structure.
- Provided cloud identity management using Microsoft Entra ID (Azure AD) and implemented secure access policies by establishing a hybrid user structure.
- Managed the installation, user management, and access control processes for Exchange Server 2019 and Office 365 platforms.
- Performed endpoint management through Microsoft Intune; created and monitored mobile device and user policies.
- Configured Fortigate firewall and site-to-site VPN to securely connect the company's central and remote locations.
IT Supervisor
YK Holding A.Ş.
10.2022 - 07.2023
- Managed VMware ESXi and Microsoft Hyper-V virtualization environments, standardized snapshot and cloning processes.
- Managed corporate email infrastructure on Exchange Server 2019, implemented Outlook profile integrations and security configurations.
- I set up IPS/IDS, content filtering, and remote access VPNs through the Fortigate firewall.
- I set up full and incremental backup systems with Veeam Backup & Replication and ensured business continuity with periodic restore tests.
- I ensured that all users were managed with central policies by setting up and maintaining basic services such as AD, GPO, DNS, and DHCP.
IT Supervisor
Novartis Türkiye
01.2022 - 10.2022
- I provided IT infrastructure support for MES (Manufacturing Execution Systems) environments; I ensured the continuous and uninterrupted operation of production systems.
- I tracked requests received through ServiceNow (SNOW) and managed SLA and change management processes.
- I supported system updates and validation processes necessary for regulatory compliance (GxP, CFR 21 Part 11).
- I strengthened the production infrastructure by reorganizing backup systems and user access policies.
- I worked with international Novartis IT teams to ensure the infrastructure's compliance with global standards.
IT Supervisor
Louis Vuitton
10.2019 - 01.2022
- I managed the IT infrastructure of retail stores and the head office; provided Windows Server 2012–2019, Active Directory, and GPO management.
- Configured the VMware ESXi-based server virtualization infrastructure; performed system monitoring, performance optimization, and backup processes.
- I configured Cisco wireless network devices and ensured in-store connection security; I monitored devices with NAC controls.
- I managed the installation of NAS devices, user access rights, and backup connections.
- I worked in coordination with the France-based IT team to integrate global IT security and inventory control policies into Turkey operations.
Senior IT Specialist
BT Exper
05.2019 - 10.2019
- Provided on-site and remote system support to customers; managed Windows Server 2008–2019, Active Directory, and GPO.
- Performed user management and troubleshooting for Microsoft Exchange 2012–2016 and Office 365 systems.
- I installed and configured VMware ESXi environments and performed virtualization performance tests.
- I configured VPN, content filtering, and firewall rules through Fortigate, Sophos, and Cyberoam firewalls.
- I managed the installation, central updates, and threat analysis of security software such as ESET, Trend Micro, and Sophos.
Senior IT Specialist
Unilever
- Managed the IT infrastructure at the Tuzla factory from end to end; set up and managed AD, DHCP, DNS, File Server, and WSUS structures.
- Configured user accounts, mailboxes, and SMTP relay settings via Exchange Server 2010.
- Managed antivirus policy distribution, threat monitoring, and update tasks using McAfee and Sophos endpoint solutions.
- Performed backup and disaster recovery tests for servers integrated with production systems.
- Tracked hardware inventory, resolved user requests, and ensured the continuity of production site systems.
IT Supervisor
Euler Hermes Türkiye (Allianz)
03.2017 - 03.2018
- Ensured continuity of email services by managing Exchange 2010 and Outlook integration.
- Developed user-based security policies through Sophos endpoint protection and firewall devices.
- Actively participated in the configuration of Skype for Business, Avaya VoIP systems, and network exchanges.
- Centrally managed Active Directory, DNS, DHCP, File Server, and WSUS structures.
- Collaborated with the Allianz global IT team to support cybersecurity testing and data integrity audits.
IT Specialist
Société Générale
11.2013 - 10.2016
- I Implemented user management and security policies in a banking environment using Windows Server 2008 R2, Active Directory, and GPO.
- Managed maintenance, backup, portability, and user support processes for the Exchange Server 2007 infrastructure.
- I set up virtual servers, took snapshots, and implemented disaster recovery scenarios on the VMware ESXi virtualization platform.
- I minimized security vulnerabilities using Symantec Endpoint Protection, WSUS, and system updates.
- I prepared documentation for every change made to the IT infrastructure and took responsibility for internal and global audits.
IT System Administrator
Mondi UFP
10.2012 - 12.2013
- I managed the installation, maintenance, and support processes for all systems at three factories and the head office.
- Configured Exchange Server 2007, AD, DHCP, and DNS on Hyper-V-based virtualization systems.
- Established a backup strategy with Symantec Backup Exec; ensured data integrity with weekly restore tests.
- I implemented antivirus policies, update services, and user access controls using Sophos security solutions.
- I coordinated with international IT teams to track system inventories and enforce security policies.
IT Supervisor
İSPARK A.Ş.
01.2006 - 09.2012
- I securely managed all 15 parking lot branches across Istanbul to the head office via VPN and firewall (Fortinet 310B).
- I ensured the monitoring of SQL-based parking lot automation systems and automated work business workflow.
- I set up Exchange Server 2007, AD, DNS, DHCP, WSUS, and Print Server structures and managed them across all branch and central systems.
- I configured firewall rules, content filtering, and URL blocking settings tailored to each branch and configured for TCK 5651.
- I built the IT infrastructure from scratch and integrated it into a centralized system architecture; I established a system accessible 24/7.
Education
MSc - Management Information Systems
Ahmet Yesevi University
Ankara, 06 01.2017 - 01.2018
BA - Public Administration
Anadolu University
01.2008 - 01.2010
AA - Local Governments
Anadolu University
01.2006 - 01.2008
Skills
- Windows Server (2003-2008–2012-2016-2019-2022)
- Active Directory / DNS / DHCP / GPO / Print server
- Microsoft Exchange (2007–2019) -Office 365
- VMware ESXi / Hyper-V
- Microsoft Entra ID (Azure AD) / Microsoft Intune
- Fortigate / Sophos / Cyberoam Firewalls
- VPN & Secure Remote Access
- Veeam Backup & Replication / Symantec Backup Exec
- Endpoint Protection (ESET, McAfee, Sophos)
- Patch Management / WSUS
- ITIL-based Help Desk (JIRA, ServiceNow)
- SQL Operations / NAS / Cisco Wireless
Certification
VMware vSphere: Install, Configure, Manage
Timeline
IT Supervisor
Weicon Türkiye
07.2023 - Current
IT Supervisor
YK Holding A.Ş.
10.2022 - 07.2023
IT Supervisor
Novartis Türkiye
01.2022 - 10.2022
IT Supervisor
Louis Vuitton
10.2019 - 01.2022
Senior IT Specialist
BT Exper
05.2019 - 10.2019
IT Supervisor
Euler Hermes Türkiye (Allianz)
03.2017 - 03.2018
MSc - Management Information Systems
Ahmet Yesevi University
01.2017 - 01.2018
IT Specialist
Société Générale
11.2013 - 10.2016
IT System Administrator
Mondi UFP
10.2012 - 12.2013
BA - Public Administration
Anadolu University
01.2008 - 01.2010
IT Supervisor
İSPARK A.Ş.
01.2006 - 09.2012
AA - Local Governments
Anadolu University
01.2006 - 01.2008
Senior IT Specialist
Unilever