Cagatay Sanli

Network Management & Configuration ► Plan, configure, and manage LAN/WAN, WLAN, VPN, and SD-WAN infrastructures. ► Integrate and operate firewalls (Check Point, Fortinet, Palo Alto), IPS/IDS, and SIEM solutions. ► Implement and manage load balancing solutions (Netscaler, KEMP) for optimal performance. Security Operations ► Manage security incidents, conduct threat hunting, and analyze emerging threats. ► Oversee security device operations (Check Point, Fortinet, Cisco) and endpoint security integration (EDR/XDR). Network Architecture & Security Solutions ► Design and deploy corporate network infrastructures, including SDN solutions. Leadership & Team Management ► Lead, mentor, and empower teams, fostering collaboration and high performance. ► Resolve conflicts and ensure effective communication within teams. ► Evaluate team performance and implement continuous improvements. ► Establish and enforce security policies and governance frameworks. Leadership-Oriented Technical Expertise ► Provide operational leadership during incidents and crisis situations. ► Oversee processes and drive continuous improvement initiatives. Problem Solving & Strategic Decision Making ► Conduct root cause analysis and resolve complex technical issues. ► Apply critical thinking to develop innovative solutions for strategic challenges. Technologies & Tools ► Protocols: TCP/IP, DNS, DHCP, MPLS, VoIP, BGP, OSPF, IPv4/IPv6 ► IP Services: DNS/DHCP (Microsoft) ► Firewalls & Security: Fortigate, Cisco, VMWare NSX, Check Point; IPS, IDS, IPSec, SSL/TLS, VPN, EDR/XDR, DLP, CTI, IoC ► Web Proxy: BlueCoat, Forcepoint ► Network Monitoring/IPAM: SolarWinds, Zabbix, OpManager ► Load Balancing/Reverse Proxy: Citrix Netscaler, KEMP

► Managed all wired and wireless network infrastructures across multiple campuses, ensuring continuous connectivity and optimal performance. ► Maintained network and information security through proactive monitoring and vulnerability assessments. ► Oversaw system monitoring, bandwidth management, and VoIP infrastructure administration. ► Conducted capacity planning to deliver scalable and efficient network solutions aligned with organizational needs. ► Administered firewall systems and implemented security controls to mitigate risks. ► Established and enforced operational procedures for incident response and service requests within the operations team.

► Oversaw and executed operational IT processes, ensuring uninterrupted service delivery and process efficiency. ► Provided on-site technical support and consultancy at client locations, addressing system and infrastructure needs. ► Designed and implemented monitoring and management systems, including reporting modules for daily, weekly, and monthly performance tracking. ► Developed and standardized business process workflows to improve service quality and accountability. ► Led the on-site technical team, coordinating workload, priorities, and client communication.

► Delivered advanced network and security support within the SOC as a 2nd Level Specialist, ensuring service continuity and SLA compliance. ► Managed and optimized multi-vendor infrastructures (Cisco, Check Point, Juniper, HP, ArcSight, BlueCoat, etc.). ► Led service standardization, cost and capacity planning, and integration of monitoring systems for improved operational efficiency. ► Supported pre-sales activities, designing tailored network and security solutions aligned with client requirements. ► Provided on-site troubleshooting and coordination with internal teams, vendors, and customers for critical issues. Supported/Managed brands: Cisco (Routers, Switches, Wireless Controllers, ASA), HP (Switches, NNMi), ArcSight (Log Management), Check Point (Firewall & VPN), Juniper (Firewall & VPN, NMS), Nortel (VPN, Switches), IBM (ISS), Websense, BlueCoat, SSIM.

𝗦𝗶𝗲𝗺𝗲𝗻𝘀 𝗜𝗧 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 & 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ► Served as a 1st Level Technical Specialist within the Service Operations Center. ► Monitored and supported Windows, Unix/Linux systems, and network devices under ITIL-aligned processes, executing first-line troubleshooting, escalation, and notification procedures during critical incidents. ► Managed and coordinated datacenter infrastructure operations, including cabling, environmental systems, and overall technical organization to maintain high service continuity and compliance standards.

𝗦𝗶𝗲𝗺𝗲𝗻𝘀 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ► Delivered first-line technical and system support within the Helpdesk unit. ► Logged, categorized, and escalated incidents in alignment with ITIL standards, improving response and resolution times for critical user requests. ► Monitored WAN infrastructure for a network-driven client, promptly addressing connection and system failures to minimize downtime. ► Supported VPN operations and firewall management (Check Point) for a key enterprise client, contributing to secure and stable remote connectivity.