BARASH HELVADZHAOGLU

Managed maintenance, patching, upgrades, and policy lifecycle of Cisco ISE clusters. Implemented phased migration and rollback plans to reduce TACACS+/RADIUS authorization risks. Managed firewall policies and ACL updates within ITSM change processes. Supported Cisco Fabric-based network deployments and Catalyst Center + ISE integrations(SD-Access network). Monitored data center operations and accelerated incident response. Technologies/Skills: Cisco ISE, Cisco Switching, Cisco Firewalls(Firepower,ASA), ITSM, change Management, root cause analysis.

Developed and maintained secure network and computer systems, ensuring data protection, compliance, and proactive threat mitigation. Managed, operated, maintained, and troubleshooted network and network security solutions, optimizinginfrastructure performance and reliability. Collaborated with the DevOps team to plan and implement automation processes for ITSM tasks, increasing operational efficiency. Led the installation, demonstration, and documentation of new network security products, including management of POCs for switches, routers, firewalls, IPS, DDoS protection, and VPN devices. Ensured operational excellence of network and network security infrastructure by driving continuous improvement and implementing innovative solutions. Monitored data traffic and controlled network resource performance to ensure high-quality transmission using monitoring tools such as SolarWinds and OpManager. Conducted periodic maintenance of network devices to meet and exceed industry standards. Identified, diagnosed, and resolved technical issues related to network failures, integrity, and performance. Configured firewall policies and switch settings as part of daily ITSM operations, maintaining robust security and access controls. Applied scripting and automation techniques to reduce manual workload and improve operational workflows.

Led the design, implementation, and documentation of networking projects, applying project management methodologies for routers, switches, wireless controllers, access points, firewalls, NAC, 802.1x, SD-WAN, SD-Access, and security software/hardware. Managed, planned, and organized daily team operations to ensure timely delivery of network and security solutions. Coordinated pre-sales and post-sales technical activities, supporting client engagements from initial consultation through deployment and support. Delivered wireless heat maps and conducted active and passive site surveys using Ekahau and other specialized software to optimize wireless network performance. Monitored industry trends and emerging technologies to maintain cutting-edge network and security infrastructure. Managed customer technical support requests, resolving issues efficiently while liaising with vendors and maintaining high standards of communication. Engaged with vendor support teams, providing escalation and follow-up for field support cases. Configured and integrated network and security products for micro-segmentation projects; deployed NAC solutions such as Cisco ISE, DNA Center, Aruba ClearPass, Windows NPS, DNS, and DHCP services. Redesigned customer-facing software interfaces to simplify SLA processes, improving user experience for both clients and internal teams.

Designed, implemented, and documented network solutions, including routers, switches, wireless controllers, access points, firewalls, and security software/hardware, to meet customer performance and security requirements. Managed daily customer operations and support requests in alignment with SLA agreements, ensuring timely resolution and client satisfaction. Administered network and network security products, configured firewall policies, troubleshooted issues, optimized configurations, implemented best practices, and performed software upgrades across WAN, LAN, WLAN, IPsec VPN, and SSL VPN environments. Installed and configured networking products from multiple vendors, implementing advanced protocols and features such as STP, MPLS, BGP, EIGRP, OSPF, HSRP, and VRRP to enhance network performance and redundancy. Deployed and maintained Cisco Collaboration products, including VoIP, Call Manager, IP Telephony, and Webex; troubleshooted issues, optimized system performance, and conducted software upgrades to ensure seamless communication services.

I played a key role in ensuring the quality of satellite receiver software through rigorous testing and collaboration with vendors. Executed predefined test scenarios to validate software performance and functionality. Engaged with different vendors to facilitate effective communication and issue resolution. Enhanced my skills in software testing methodologies and vendor management.

Uydu Haberlesme ve Uzaktan Algılama Bölümü

Elektrik Elektronik Mühendisliği