Al Mehdi Md Mustafizur Rahman

Lead the overall planning, operation, and management of the organization’s network, voice, and messaging infrastructure. Responsible for enterprise-scale data, SMS and IP telephony platforms while ensuring high availability, security and performance.

• Lead and mentor the NOC and technical teams.
• Manage carrier-grade Data, IP Telephony, Softswitch, SMSC, CDR, Billing and Call Routing platforms.
• Design and maintain core routers, Layer 3 switches and enterprise network infrastructure.
• Administer and optimize Linux and Windows server environments.
• Deploy DNS, Mail, Proxy, Gateway and IP-PBX services.
• Implement firewall policies, access control and threat mitigation.
• Monitor network performance, troubleshoot data and voice issues, and plan capacity.
• Manage bandwidth allocation and traffic optimization.
• Oversee backup, disaster recovery and business continuity.
• Coordinate with ISPs, ICXs, telecom operators and technology vendors.
• Plan and upgrade network operating systems, server platforms and enterprise communication solutions.

Managed the Network Operations Center and enterprise network infrastructure, ensuring reliable ISP services, network security and customer support while leading daily network operations.

• Supervised NOC engineers and daily network operations.
• Managed enterprise LAN/WAN infrastructure and data communication systems.
• Configured Cisco routers, Layer 3 switches and network security devices.
• Administered Linux and Windows servers for DNS, Mail, Proxy and Gateway services.
• Optimized bandwidth allocation and monitored network performance.
• Implemented firewall policies and security standards.
• Performed advanced troubleshooting for enterprise and ISP network issues.
• Coordinated with ISPs, vendors and corporate customers.
• Managed structured cabling projects and infrastructure deployments.
• Ensured backup, disaster recovery and high system availability.

Managed enterprise IT infrastructure and provided end-to-end support for network, server and desktop environments to ensure business continuity and efficient IT operations.

• Administered Windows and Linux network environments.
• Installed and maintained servers, desktops, printers and networking equipment.
• Monitored network health and resolved hardware, software and connectivity issues.
• Implemented LAN infrastructure, shared resources and network security best practices.
• Supported users through troubleshooting and technical assistance.
• Coordinated hardware maintenance and vendor support.
• Assisted in infrastructure planning and system upgrades.

Managed enterprise server and network infrastructure supporting ISP operations and corporate communication services.

• Administered Linux and Windows servers.
• Managed LAN/WAN infrastructure and enterprise networking services.
• Configured routers, switches, DNS, Mail, Proxy and Gateway servers.
• Implemented firewall management and network security solutions.
• Performed server installation, upgrades, maintenance and disaster recovery planning.
• Resolved network connectivity and communication issues.
• Coordinated with ISPs and technology vendors to maintain service availability.

Delivered enterprise networking solutions and technical consulting for corporate clients while supporting IT infrastructure projects and customer implementations.

• Designed and implemented enterprise LAN/WAN solutions.
• Led IT solution deployment and technical support activities.
• Developed technical proposals, network designs and implementation plans.
• Conducted customer meetings and infrastructure consulting.
• Delivered technical training for engineering, sales and support teams.
• Managed technical escalations and customer satisfaction.
• Collaborated with technology vendors on solution design and product evaluation.
• Assisted management with strategic planning, budgeting and departmental operations.