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Enterprise Firewall Security
Deployed and hardened Fortinet FortiGate UTM firewalls securing 1000+ users; firewall policies, VPN, web filtering and threat prevention.
IT INFRASTRUCTURE & NETWORK SECURITY SPECIALIST
> Fortinet Firewalls
HabiburRahman
9+ years keeping business-critical systems online — networks, servers, security and support — with 99.99% uptime across IT distribution and construction organizations.
9+Years Experience
16Skills
11Certifications
4Projects
SYSTEM_READY
Live Network Status
UPTIME 99.99%
Uptime delivered
99.99%
Users secured
1000+
Experience
9+ yrs
Certifications
11
//CAREER JOURNEY
Professional Experience
//PROFESSIONAL SUMMARY
Experienced IT professional with 9+ years of progressive responsibility in IT management and infrastructure projects. Proven ability to manage large-scale IT operations across IT distribution and construction companies. Expertise in aligning technology with business strategy, managing cross-functional teams, ensuring IT security, and delivering business-critical projects with 99.99% system uptime. In-depth knowledge of IT infrastructure and network platforms, with practical knowledge.
1
National Development Engineers Ltd.
Assistant Manager – IT
Jun 2023 — Current
- Lead IT operations across multiple companies under one group, managing IT infrastructure and support staff.
- Provide IT support including OS installation (Windows & Linux), administration, troubleshooting, upgrades and configuration.
- Handle application installation, configuration, administration and support based on client requirements.
- Ensure timely support for both Head Office and Project users, including user data backup and restore.
- Hands-on VMware virtualization: ESXi installation, VM lifecycle management (creation, cloning, snapshot, backup/restore, migration), networking, performance monitoring and troubleshooting.
- Implemented a Hyperconverged Infrastructure (HP SimpliVity with VMware vSphere) for the NDE data center.
- Monitor and support the Zimbra mail server, Barracuda email security system and antivirus server.
- Network support, monitoring and troubleshooting for Head Office and projects — remote support, with on-site visits when needed; install, configure and support routers, switches and access points.
- Control IT budgeting, procurement, vendor relations and contract compliance.
- Manage multiple domains and corporate websites, ensuring functionality, updates and recovery.
- Orchestrated collaboration between IT infrastructure and customer service teams, resolving 20+ critical system-wide issues, improving service delivery (99.99% uptime) and reducing downtime incidents.
//TOOLS & TECHNOLOGIES
VMware ESXivSphereHP SimpliVityZimbraBarracudaWindowsLinuxRoutersSwitchesAccess Points
2
Brand Pvt Ltd.
Officer – IT
Feb 2017 — Jun 2023
- Installation, diagnosis and servicing of PCs, laptops and all-in-one systems — Dell, Lenovo, Asus, HP, Acer and custom-built (clone) systems.
- Installation, configuration and troubleshooting of printers (all models), scanners (Canon, Avision, HP) and UPS systems.
- Diagnosis and servicing of components such as HDDs, RAM, power supplies, motherboards and processors.
- Client computer diagnosing, troubleshooting and problem solving.
- Corporate client-site support and installation work, including OS (Windows & Linux) installation, administration, troubleshooting and upgrades case by case.
//TOOLS & TECHNOLOGIES
WindowsLinuxDellLenovoAsusHPAcerCanonAvisionUPS
//WHAT I WORK WITH
Skills & Technologies
SKILLS.EXE
41 technologies
Tools & Platforms
Infrastructure & Network
IT Infrastructure ManagementFirewall, Switch & Access Point deploymentData Center & Server InfrastructureHardware/Software Lifecycle Management
Security & Continuity
Cybersecurity & Disaster Recovery PlanningFortinet Firewall / UTM (1000+ users)Kaspersky endpoint security (500+ users)IP CCTV & Biometric Access Systems
Systems & Email
Google Workspace, Zimbra, BarracudaActive Directory & File ServersWindows IIS & SQL Database serversVMware ESXi / vSphere virtualization
Leadership & Ops
Project & Team LeadershipBudgeting & Vendor SLA ManagementIT Budget Management & PurchaseCross-functional collaboration
Tools & Platforms
FortinetFortiGateVPNUTMVMwareESXivSphereHCIZimbraBarracudaLinuxCiscoVLANCCTVGitHubPythonMicrosoft 365MikroTikPowerShellWindows 11Red HatDebianUbuntuKali LinuxWindows Server 2022Windows 10macOSMicrosoft WordMicrosoft ExcelMicrosoft ProjectMicrosoft VisioNmapBrute ForceMetasploitWiresharkSQLmapHydraAircrack-ngNiktoDark WebC
//WHAT I’VE BUILT
Projects
//CREDENTIALS
Certifications
01 / 11
Cisco Certified Network Associate (CCNA 200-301)
Cisco
02 / 11
Network Security
Cisco Networking Academy · NACTAR
03 / 11
MTCNA Full Course
Udemy
04 / 11
SE: Core Client Credential
Dell Technologies
05 / 11
SE: Latitude Rugged Credential
Dell Technologies
06 / 11
SE: Server Credential
Dell Technologies
07 / 11
SE: Workstation Credential
Dell Technologies
08 / 11
Storage Fundamentals
Hewlett Packard Enterprise
09 / 11
ProLiant Server Foundation
Hewlett Packard Enterprise
10 / 11
Acer Certified Engineer L1
Acer
11 / 11
Acer Certified Engineer
Acer
//ACADEMIC BACKGROUND
Education
I2026
BSc in Computer Science and Engineering
Northern University Bangladesh
Coursework completed 2026 — result pending
II2015
Diploma in Computer Technology
Naogaon Polytechnic Institute
CGPA 3.27
III2011
SSC in Science
Al-Hera Academy School, Joypurhat
GPA 4.06
//CONTACT
Get In Touch
Phone
+880 1786-993989
Habibur Rahman
East Kazipara, Mirpur, Dhaka
SYS_OK