Zeynep Yilmaz Caglayan

- Administer and maintain hybrid infrastructure environments including on-prem VMware platforms and Microsoft Azure services. - Manage Active Directory, Group Policy, Entra ID and identity-related security controls. - Support endpoint and security management solutions such as Microsoft Intune and Microsoft Defender. - Perform patch management, system upgrades, and lifecycle management for production systems. - Work closely with security, compliance, and external vendors to ensure regulatory alignment.

- Led automation initiatives using Ansible and PowerShell to reduce manual operational tasks. - Supported large-scale enterprise server environments across multiple operating systems. - Automated routine configuration, deployment, and maintenance processes. - Acted as escalation point for complex infrastructure incidents and performance issues. - Collaborated with cross-functional teams during OS upgrades and release activities.

- Administer the overall activities to develop/design, maintain and troubleshoot of all server infrastructure systems within corporate technology framework standards and policies. - Update and maintain 4000+ servers, including Windows, Oracle, Solaris, AIX, and Linux. - Manage and enhance virtualization environments (VMware, Hyper-V) to optimize resource utilization. - Lead 24x7 support efforts for our mission-critical systems and collaborate with cross-functional teams in troubleshooting complex.

- Implemented manual and automated testing practices to support Agile development and efficient sprint execution. - Conducted end-to-end, system, integration, and regression testing to ensure stable and reliable releases.

- Ensured full coverage of critical business processes through structured testing and validation. - Provided user support and guidance, improving system adoption and operational efficiency.

- Delivered software testing and ERP consulting services across multiple enterprise projects. - Developed and executed comprehensive test plans and complex test scenarios, increasing early detection of critical defects by 20% prior to release. - Supported Oracle JD Edwards ERP implementations, managing and contributing to 10+ concurrent projects.