I am a Network Security Specialist with 12 years of experience designing, implementing, and managing cybersecurity solutions for enterprise environments.
My background is centered on protecting network infrastructures, data, and critical assets through firewall management, network segmentation, threat detection, and incident response.
I have worked across a wide range of technologies including FortiGate, Palo Alto, Juniper, Cisco, Check Point, Wazuh, CrowdStrike XDR, FreeIPA, MISP, RADIUS, and Cisco ISE.
I am experienced in routing and switching, WAN redundancy, VPNs, NAC, load balancing, and secure network architecture, with a strong focus on reliability and operational continuity.
Throughout my career, I have collaborated closely with IT, DevSecOps, and cross-functional teams to align security operations with business goals and compliance requirements.
I am known for being hands-on, analytical, and collaborative, with a strong ability to troubleshoot complex issues, improve security posture, and support mission-critical environments.
I am open to opportunities where I can contribute deep network security expertise, lead security initiatives, and help organizations strengthen their cyber resilience.
Leading enterprise network security architecture and firewall policy management for a multi-site environment. Designing and implementing network segmentation strategies using VLAN, SD-WAN, and Zero Trust principles. Overseeing threat detection and incident response workflows across the organization. Collaborating with cross-functional IT and DevSecOps teams to align security operations with business objectives.
Managed firewalls to protect network infrastructure and enforce security policies. Deployed and administered open-source security tools including Wazuh, FreeIPA, MISP, and RADIUS. Enhanced organizational security posture through access control mechanisms and threat monitoring. Implemented identity and access management solutions and delivered robust authentication services.
Administered and optimized five FortiGate firewalls, improving security posture and resolving user issues. Deployed and managed CrowdStrike XDR for advanced threat detection and response. Configured BGP-based WAN redundancy using RIPE-assigned IP ranges. Performed Linux kernel updates, vulnerability scans, and NAC implementation with FortiSwitch and NPS.
Maintained network security using Juniper, Cisco ASA, Cisco ACS, Fortigate, Palo Alto, and Check Point technologies. Executed firewall and network migration projects from Check Point to Fortigate. Implemented and configured Fortigate SD-WAN to optimize connectivity and performance.
Provided cybersecurity consulting to improve information security and support compliance standards. Collaborated with cross-functional teams to implement security measures and protect critical data. Contributed to network architecture and infrastructure security and managed Cisco ISE for LAN and WiFi networks.
Led a team responsible for network security operations and protection of critical assets. Maintained security posture using industry best practices and compliance standards. Implemented and managed Cisco ISE for LAN and WiFi networks in a military project.
Provided support for Turkey-wide intranet networks and ensured connectivity and reliability. Configured routers and switches including Cisco Nexus, Catalyst, ASR, ACI, and Huawei NE40. Used routing and switching protocols such as EIGRP, OSPF, RIP, VRRP, MSTP, and Port Security to optimize performance and security.
Managed data center network and security infrastructure. Installed and managed Microsoft NAC with 802.1X and performed Cisco switch configurations to improve access control. Resolved network issues to support uninterrupted operations.
Implemented and managed Palo Alto and Juniper SRX firewalls and deployed Citrix NetScaler ADC. Improved firewall architecture, designed BGP multihoming, and developed disaster recovery failover scenarios. Managed OSPF in MPLS environments, configured IPSec VPNs, supported PCI DSS compliance, and handled vendor escalations.
Provided customer network support and managed firewall migrations across Check Point, Palo Alto, Juniper, and Fortigate platforms. Executed network device migrations and upgrades and configured IPSec VPNs over internet and MPLS networks.
Provided LAN, WAN, and WiFi support for enterprise customers using Cisco technologies. Collaborated on network and WiFi projects and supported stable network operations.
Managed UTM systems for Ministry of National Education networks using FortiManager and FortiAnalyzer platforms. Supported centralized security monitoring and administration.
Led project network installation and management across multiple sites including hospitals, malls, residences, airports, and arena infrastructure. Provided dedicated network support and ensured smooth operations.
Provided customer network and system support and worked on routers and switches. Used routing, switching, security, and wireless technologies to improve network functionality. Planned and documented network projects and supported WLAN users and wireless access controllers.
Supported the INGBANK MPLS transition project and managed critical information processes. Conducted configuration and testing of offsite ATM routers and contributed to mission-critical IT support.
High School Diploma, General Education
Completed high school education.
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