Romel Ferdous

Network Security Engineer

Alliance Building Services

Aug 2025 - Current (1 year 3 months)

• Configure and harden enterprise switches and firewalls (Palo Alto, SonicWall, Aruba), enforcing least-privilege access and secure network architecture.
• Implement VLAN segmentation and zero-trust principles to reduce attack surface and limit lateral movement.
• Monitor and analyze security events using Splunk, Wazuh, and centralized syslog for threat detection and incident investigation.
• Use ManageEngine MSP for endpoint monitoring, patch oversight, and asset visibility.
• Conduct firewall rule reviews and support vulnerability remediation efforts.
• Maintain configuration baselines and audit-ready documentation aligned with NIST principles.
• Achievement: Reduced VLAN 1 exposure, standardized management V

Multi-Tenant Sales Specialist

Charter Communications

Oct 2023 - Aug 2025 (1 year 11 months)

• Managed multi-tenant connectivity sales for commercial and residential clients, ensuring reliable broadband and voice delivery.
• Worked closely with network and field teams to coordinate provisioning, installation, and service activation.
• Maintained strong product knowledge of fiber, coax, and enterprise data services to support client needs.
• Delivered consultative sales presentations to property managers and business owners.
• Consistently achieved or exceeded quarterly sales goals through account management and renewals.

System Administrator (Contract)

PeopleNTech Institute of IT

Sep 2021 - Oct 2023 (2 years 2 months)

• Engineered and maintained secure network infrastructure using MikroTik routers, Cisco switches, and Fortinet firewalls.
• Designed VLAN segmentation, NAT, and VPN tunnels to support secure multi-tenant and e-learning environments.
• Administered Windows and Linux servers, implementing hardening practices and access control policies.
• Performed log analysis and network diagnostics using Wireshark, Nmap, and SIEM tools to support incident investigation.
• Managed backup automation, patch updates, and system availability to maintain operational resilience.
• Developed configuration documentation and supported change management aligned with security standards.
• Collaborated with cybersecurity instructors to opt

D

AGM, Head of IT

Desh Rupantor

Oct 2018 - May 2021 (2 years 8 months)

• Directed IT operations for 500+ users, ensuring secure and reliable infrastructure.
• Managed and optimized FortiGate firewalls, configuring advanced security policies and VPN solutions.
• Designed and maintained VLANs on Cisco and Fortinet switches to enhance network segmentation and performance.
• Performed vulnerability assessments and penetration testing to strengthen cybersecurity posture.

M

IT Manager

Media New Age Ltd.

Sep 2014 - Sep 2018 (4 years 1 month)

• Oversaw enterprise network infrastructure supporting 2,000+ endpoints, implementing secure routing and switching solutions.
• Configured and maintained FortiGate firewalls and Cisco networking equipment, including NAT, VPN, and port forwarding.
• Troubleshot and resolved complex network issues using packet tracing and bandwidth analysis tools.
• Developed network documentation, topology diagrams, and security policies to ensure compliance and operational clarity.

Team Leader, IT

Daily Sun

Jul 2010 - Sep 2014 (4 years 3 months)

• Directed IT infrastructure upgrades, including Cisco VLAN segmentation and FortiGate firewall deployments.
• Managed VPN deployments, secure remote access, and endpoint security implementations.
• Coordinated with vendors on Fortinet and Cisco solutions, ensuring best practices in network security and system reliability.
• Created compliance documentation and conducted routine risk assessments to maintain robust IT security controls.

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Romel Ferdous

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