Arsalan

• Led the administration and optimization of Simac’s network infrastructure, ensuring high availability, performance, and secure connectivity. • Implemented advanced protections against phishing and cyber threats using FortiGate firewalls, enhancing perimeter security and compliance. • Resolved daily network incidents, service requests, and change controls with a proactive and analytical approach, maintaining SLA performance. • Configured and troubleshot complex issues across routers, switches, and firewalls, ensuring operational stability and fast issue resolution. • Managed an ecosystem of network technologies including Cisco ISE, Cisco DNAC, Cisco APIC, Meraki, and FortiGate, aligning with security policies and business needs. • Built and managed secure VPN tunnels between Meraki MX and FortiGate, enabling efficient remote connectivity and site-to-site integrations. • Collaborated with cross-functional teams to enhance network architecture, optimize performance, and implement scalable solutions. • Delivered responsive support to end-users, resolving network access and connectivity issues with clarity and efficiency. • Conducted continuous monitoring and performance assessments using network monitoring tools and CatTools, ensuring infrastructure health and early detection of anomalies. • Recommended and implemented strategic network improvements to boost security posture and operational efficiency.

• Managing and maintaining the network infrastructure of Gemeente Tilburg. • Securing Gemeente Tilburg against advanced phishing attacks in Palo alto firewall. • Securing Gemeente Tilburg against wifi spoofing and evil twin attack in Cisco WLC. • Handling and controling daily network incidents/changes • Managing Gemeente Tilburg Palo alto firewalls. • Managing Cisco ISE, DNAC, Meraki, APIC and wireless LAN controller (WLC) • Building vpn tunnels between MX meraki and palo alto • Configuring and troubleshooting network devices including routers, switches, and firewalls. • Implementing security protocols and ensuring network integrity. • Collaborating with cross-functional teams to optimize network performance and address technical issues. • Supporting end-users with network-related inquiries and providing technical assistance. • Conducting regular network assessments and recommending improvements to enhance efficiency.

Handling daily network incidents/changes • Implementing firewall changes • Troubleshooting network problems • Configuring IPSEC/SSL/AD/VXLAN over IPSEC VPNS • Providing Level-2/3 support and troubleshooting • Managing customer firewalls (Cisco ASA and FortiGate) • Configuring and installing various network devices and services (routers, switches, firewalls) • Performing network maintenance and system upgrades • Monitoring performance and ensuring system availability and reliability