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System Administrator

With 5+ years in banking IT, I specialize in secure, scalable infrastructure and virtualization.

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Probationary Officer

Joined as a Probationary Officer—a highly competitive and prestigious entry-level position in Bangladesh's banking sector.

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Research Enthusiast

Research-focused IT professional exploring advanced studies in cybersecurity, ML, and secure banking systems.

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ABOUT ME

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Hello, I am Abdullah Al Mamun

From Dhaka, Bangladesh

I’m a System Administrator with a background in Electronics and Telecommunication Engineering. In the banking IT sector, I manage data center infrastructure, VMware virtualization (vSphere, ESXi), and server administration for Windows and Linux, ensuring high availability and system performance.

I have hands-on experience in Docker platform, System monitoring, and backup strategies, focusing on system efficiency and security. Proficient in Linux and Bash scripting, I’m expanding my expertise in Kubernetes, container orchestration, and cloud-native technologies to build scalable, resilient infrastructure solutions.

Outside of work, I enrich my knowledge through technical literature and stay abreast of emerging IT trends to continuously refine my skills.

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Hello, I am Abdullah Al Mamun

From Dhaka, Bangladesh

Whether you're looking to collaborate, have a technical question, or just want to discuss ideas in system engineering, IT infrastructure, or cybersecurity—I'm always open to meaningful conversations.

Feel free to reach out via email or connect with me on LinkedIn.

mamun.shihab1214@gmail.com
Dhaka, Bangladesh
+880 1719-035032

Hello, I am Abdullah Al Mamun

From Dhaka, Bangladesh

Seamless Recovery from Critical Security Incident

Led the rapid migration of a compromised Docker-based Digital Banking (iBanking) application server, achieving full restoration with only 30 minutes of downtime, ensuring uninterrupted customer access and maintaining service reliability.

Proactive Threat Mitigation in Application Servers

Identified and mitigated multiple unauthorized login attempts across several production application servers, implementing enhanced security protocols that fortified system defenses and prevented potential data breaches.

Hello, I am Abdullah Al Mamun

My Latest Skills

Kubernetes
RHEL
VMWare
Saticfaction
Project Done
Job Cancelled
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Hello

How Can I Help You?

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I Need a Security Analysis?

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Done. Delivery takes 7 Days!

MY SERVICE

Cloud & Containerization

Exploring Kubernetes and Docker for modern infrastructure transformation.

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Enterprise System Administration

Reliable server management for secure, high-performance operations.

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Virtualization & Infrastructure

Efficient VMware solutions for scalable, resilient IT environments.

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Data Center Operations

Robust infrastructure monitoring and maintenance for business continuity.

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IT Security & Audit Support

Strengthening systems through compliance and best security practices.

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Automation & Scripting

Boosting efficiency with smart Bash scripting and process automation.

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Years of Experience

6+ years in enterprise IT and system administration.

Critical Systems Managed

20+ enterprise systems and services maintained.

Servers Deployed/Maintained

50+ Windows & Linux servers deployed, configured.

VM Environments Managed

100+ VM managed across vSphere & ESXi.

IT Audits Supported

15+ branch and central IT audits successfully done

Security Incidents Handled

100+ VM managed across vSphere & ESXi.

MY PROTFOLIO

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LATEST Reviews

Trusted by 20+ Teams & Departments

6+ Years in IT System Operations

Always Focused on Results

I take ownership of mission-critical systems and drive continuous improvement in performance, uptime, and security.

Let’s Work Together
Hossain Al Mamun

His deep understanding of virtualization and server management made our infrastructure more efficient and reliable.

Head of IT Infrastructure, Union Bank PLC

Dr. Sirajul Haque

His thorough understanding of IT systems and regulatory requirements has been invaluable during audits. He consistently ensures that all systems are compliant, secure, and optimized, providing us with the confidence that our infrastructure is in top shape.

Head of ICCD, Union Bank PLC

Fardul Alam

His thorough understanding of IT systems and regulatory requirements has been invaluable during audits. He consistently ensures that all systems are compliant, secure, and optimized, providing us with the confidence that our infrastructure is in top shape.

Bangladesh Bank

Asraful Alam Biswas

His technical expertise and proactive approach to system management have been crucial in ensuring the seamless operation of our IT infrastructure. His ability to troubleshoot complex issues and implement effective solutions has significantly improved our team’s efficiency.

Head of IT Operations, IFIC Bank PLC

MY BLOGS

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TRUSTED BRAND

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