IT Professional & Cybersecurity Enthusiast

Mohammad
Saifullah

16+ years of experience in System Administration, Network Engineering, and Cybersecurity. Based in Dhaka, Bangladesh — passionate about ethical hacking and building secure infrastructures.

🛡 Cybersecurity 🐧 Linux Systems 🌐 Networking 💻 Ethical Hacking 🐍 Python | Bash 🏅 Google Certified
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01 / about

Who I Am

I'm an IT Officer with over 16 years of hands-on experience managing IT infrastructure, networks, and cybersecurity systems. Currently serving at Divine Group Limited, Dhaka — where I've been trusted to keep systems secure, connected, and running.

My journey started in Jessore and took me through teaching, data operations, and full-scale enterprise IT. I hold a Google Cybersecurity Professional Certificate and I'm deeply passionate about the world of ethical hacking and security research.

Outside of work I'm actively learning Python, Bash scripting, and exploring penetration testing techniques — always leveling up in the security domain.

16+
Years of Experience
3
Roles & Organizations
9+
Technical Skill Areas
1
Google Professional Cert
02 / experience

Work History

OCT 2010 — PRESENT · 15+ YEARS
IT Officer
Divine Group Limited · Dhaka, Gazipur
Managing and maintaining complete IT infrastructure including servers, operating systems, LAN/WAN/Wi-Fi networks, and enterprise applications. Implementing cybersecurity measures — firewalls, antivirus, encryption — while providing technical support and managing IT procurement and vendor relations. Responsible for backup & disaster recovery planning, IT policy compliance, and staff training.
System Administration Network Engineering Cybersecurity Hardware Active Directory Server Management IP Camera
MAR 2010 — SEP 2010 · 6 MONTHS
Computer Instructor
Ma Education Society · Jessore
Taught students fundamental and advanced computer skills including Microsoft Office Suite, OS installation (Windows XP, 7, Linux), online data entry, hardware troubleshooting, and network diagnostics.
Training Linux Hardware Networking
AUG 2009 — DEC 2009 · 4 MONTHS
Data Entry / Computer Operator
Titas Gas Transmission & Distribution · Dhaka
Entered and managed operational data in an Oracle-based enterprise system. Tracked daily operations and provided technical guidance to other staff members.
Oracle DB Data Entry Operations
03 / skills

Technical Arsenal

🛡️
Cybersecurity
Advanced · Google Certified
🐧
Linux Systems
Advanced
🌐
Hardware & Networking
Expert · 13+ yrs
🖥️
Windows Administration
Expert
🗄️
Server Management
Advanced
👁️
Active Directory
Intermediate
📷
IP Camera / CCTV
Intermediate
💻
Web Dev & Coding
Learning Python & Bash
🎯
End User Support
Expert
04 / education & certs

Academic Background

B.Sc. Engineering
Computer Science & Engineering
Bangladesh University of Business & Technology (BUBT)
2019 · Appeared
Diploma in Engineering
Computer Technology
Jessore Polytechnic Institute
2008 · GPA 3.26 / 4.00
SSC — Science
Secondary School Certificate
Chaugacha Hazi Sardar Martaz Ali Secondary School
2004 · GPA 4.31 / 5.00
🏅
Google Cybersecurity Professional Certificate
Coursera · Google
Sep 2023 → Jun 2024 · Online
05 / contact

Let's Connect

Open to cybersecurity collaborations, freelance IT consulting, and connecting with fellow tech enthusiasts.