Hasan Afsar

Dedicated Network Security & Firewall Engineer with 6+ years of experience specializing in enterprise firewall platforms (Fortinet, Palo Alto), proxy optimization, traffic analysis, and core routing/switching. Proven expertise in log analysis, threat detection, policy tuning, and multi-vendor network security architectures. Open to Corp-to-Corp (C2C) engagements.

Network Engineer - GTA Telecom - Little Rock, AR (Remote / Hybrid)

(2025-09 - 2026-09)

• Administered Next-Generation Firewalls and security platforms, managing complex security rule optimizations, NAT policies, and traffic flow evaluations across core IP infrastructure.
• Leveraged monitoring and log correlation tools (SolarWinds, Zabbix) to analyze network traffic patterns, identify anomalies, and support security investigations.
• Monitored and mitigated network vulnerabilities, implementing security patches and proactive threat prevention strategies.
• Delivered Level 2/3 operational support, troubleshooting site-to-site IPsec VPNs, routing protocols, and firewall rule bases.

Network & Security Engineer - Data & Infosec - PRONET (Pvt.) Limited - Karachi, Pakistan

(2025-01 - 2025-08)

• Supported and optimized enterprise proxy and firewall platforms (Fortinet, Bluecoat) across multi-site hybrid environments.
• Performed detailed traffic analysis and correlation, mapping network flows to application behavior to identify patterns and risks.
• Integrated log analysis tools (FortiAnalyzer, QRadar, Splunk equivalents) to monitor security events, traffic paths, and rule execution.
• Managed routing protocols (BGP, OSPF) and access control lists (ACLs) to secure data center and enterprise connectivity.

Network & Security Engineer - SILICON ST (Pvt.) Limited - Karachi, Pakistan

(2020-09 - 2025-01)

• Delivered end-to-end design, deployment, and troubleshooting of enterprise network security, proxy, and data center solutions across Fortinet and Cisco platforms.
• Managed FortiManager for multi-site policy packages, high-availability firewall clusters, and security rule optimization.
• Implemented SSL/Content inspection, web proxy routing, and network micro-segmentation for hybrid cloud environments.
• Integrated firewall and network logs with SIEM platforms (FortiAnalyzer and QRadar) to trace traffic flows and analyze security threats.

NOC Engineer - HUAWEI PAKISTAN - Karachi, Pakistan

(2019-12 - 2020-04)

• Monitored telco site network infrastructure, tracking traffic performance and troubleshooting connectivity alerts.
• Coordinated cross-functional escalations to ensure strict adherence to SLAs and network security policies.

Bachelor of Engineering (B.E.) - Computer System Engineering - Dawood University of Engineering & Technology, Pakistan (2016 - 2020)