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I design and implement security strategies for ISP networks to ensure high availability and resilience against cyber threats. In this role, I manage enterprise-grade firewalls, such as FortiGate, and Web Application Firewalls, like FortiWeb, to protect critical infrastructure from advanced threats. I lead DDoS mitigation operations using solutions from Arbor, Riorey, and A10, significantly reducing the impact of attacks. Additionally, I oversee SIEM deployments, integrating threat intelligence to enable proactive detection and faster incident response. I also define and enforce security policies for SD-WAN and NAC environments to enhance segmentation and ensure compliance.nd ensure compliance.

I manage core security operations for ISP infrastructure, with a focus on DDoS protection, firewall hardening, and threat monitoring. I implemented SIEM solutions, NAC controls, and DNS load balancing systems to ensure uninterrupted services. Additionally, I enforced data loss prevention (DLP) measures to maintain compliance and worked collaboratively with various teams to enhance incident response workflows. I also integrated security automation into daily operations.

I provided advanced support for enterprise clients utilizing shared firewall solutions on Fortinet platforms. My role involved managing DDoS mitigation services using A10 and Riorey technologies, ensuring optimal performance during high-traffic scenarios. I configured SIEM environments and log collection systems to ensure regulatory compliance and accurate reporting. Additionally, I focused on enhancing network resilience through real-time monitoring and a rapid response to critical security events.

I implemented secure enterprise internet services such as Fiber, Radio Link, and MPLS, while configuring security settings tailored to customer needs. I managed virtual firewalls (VDOMs) to meet diverse client requirements and resolved complex Layer 2 and Layer 3 network issues within SLA timelines.

I established and maintained secure connectivity for enterprise clients by configuring Fortinet firewalls and ensuring compliance with internal security standards. Additionally, I provided advanced troubleshooting for MPLS and telecommunication infrastructure.

I monitored and supported the hosting, DNS, and mail systems for enterprise customers, ensuring continuous service delivery. Additionally, I managed firewall tasks to maintain security and network stability.

I provided advanced technical support for enterprise clients by addressing complex network and security issues. I coordinated with field teams to deliver on-site troubleshooting, ensuring high service availability.

I provided first-level and second-level technical support for broadband services, diagnosing and resolving connectivity issues, and escalating unresolved cases to senior teams as necessary.

I assisted TurkNet customers with initial troubleshooting, resolving connectivity issues, and escalating unresolved cases to back-office teams for further analysis.

I assisted TurkNet customers by resolving issues with broadband connectivity and worked with escalation teams to deliver solutions effectively.

I diagnosed and resolved hardware and software issues for desktops and laptops, minimizing downtime and enhancing customer satisfaction.