Currently @ Queen's Hospital Ltd · Sylhet, Bangladesh
IT Infrastructure Specialist

ASHIK
DEWAN

5+ years designing resilient hospital IT ecosystems — from fiber networks and Proxmox virtualization to IP telephony and CCTV. Built for uptime. Engineered for security.

5+ Years Experience
3 Hospitals Served
2 Countries
∞ Uptime Goal
Get In Touch View Experience
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About Me

The Engineer Behind the Network

Experienced IT professional with over 5 years of hands-on experience in hospital IT environments, specializing in network infrastructure, virtualization, and system administration.

Proven expertise in MikroTik networking, Cisco/BDcom Devices, Proxmox virtualization, FreePBX call-center systems, CCTV, and nurse calling systems.

Strong in troubleshooting, system monitoring, and ensuring high availability, security, and operational continuity in mission-critical healthcare settings.

📧
EMAIL
theashikd@gmail.com
📍
LOCATION
Sylhet, Bangladesh
🎓
EDUCATION
BSc CSE — Metropolitan University
🏥
CURRENT ROLE
Executive IT · Queen's Hospital
Expertise

Technical Skills

🌐
Networking
MikroTik · Cisco · BDcom · VLAN · Firewall
🖥️
Virtualization
Proxmox · VM Management · Server Admin
📞
IP Telephony
FreePBX · Trunk Setup · Call Center
📷
CCTV & Surveillance
NVR · IP Cameras · Cabling · Config
🔦
Fiber & FTTB
OLT · Triple Play · CATV · Fiber Mgmt
🛠️
Troubleshooting
Hardware · Software · Network · Fast RCA

Certifications & Education Courses & Degrees

CCNA Certification
📍 Sukteri, Chandigarh, India
Proxmox Server Administration
📍 Udemy · Online
BSc Computer Science & Eng.
📍 Metropolitan University · Pursuing
Diploma in CSE
📍 Sylhet Polytechnic Institute
Career

Work Experience

Executive IT
Queen's Hospital Ltd
MAR 2024 — PRESENT
📍 Subid Bazar, Sylhet, Bangladesh
  • Designed, implemented, and maintained the entire hospital IT infrastructure ensuring uninterrupted, secure operations.
  • Deployed and managed Triple Play Solution (FTTB, CATV), including OLT configuration and fiber network management.
  • Installed and administered Proxmox Virtualization Server with multiple virtual servers for hospital systems.
  • Implemented Call Center & IP Telephony System with FreePBX configuration, trunk setup, and troubleshooting.
  • Configured MikroTik routers, switches, VLANs, firewalls, and bandwidth policies. Installed CCTV and Nurse Calling Systems.
IT Support
Life Core Private Medical Clinic
DEC 2021 — DEC 2023
📍 Mina Place, Abu Dhabi, UAE
  • Provided day-to-day IT support ensuring smooth operation of computer systems and peripherals for hospital staff.
  • Installed, maintained, and troubleshot hardware devices — PCs, printers, UPS — and resolved system issues.
  • Installed and configured CCTV systems including cameras, cabling, and NVR across the hospital facility.
  • Configured MikroTik Access Points with RADIUS server-based authentication across the hospital network.
IT Technician
Al Haramain Hospital Pvt Ltd
AUG 2020 — OCT 2021
📍 Samata-30, Subhani Ghat, Sylhet, Bangladesh
  • Installed, configured, and maintained computer systems, software, and network hardware.
  • Diagnosed and resolved hardware, software, and network-related issues efficiently.
  • Designed, installed, and supported analogue & digital CCTV systems and provided end-user technical support.
Infrastructure

Network Architecture

🔁
VLAN Segmentation
Isolated network segments for clinical, admin, and guest traffic ensuring security and performance.
🔥
Firewall & Security
MikroTik-based firewall policies with bandwidth management and intrusion prevention.
📡
Fiber FTTB / OLT
Full-building fiber deployment with OLT management for high-speed, reliable connectivity.
💻
Proxmox Virtualization
Multi-VM Proxmox cluster hosting hospital management systems with live migration support.
Updates

Project Blog

🔦
Fiber Network
Deploying Triple Play FTTB at Queen's Hospital
A complete walkthrough of designing and deploying fiber-to-the-building with OLT configuration, CATV integration, and IPTV services across a 10-floor hospital.
Coming Soon → Read More
🖥️
Virtualization
Setting Up Proxmox for Hospital Management Systems
How I built a Proxmox cluster from scratch to host the hospital's HIS, PBX, and monitoring systems with near-zero downtime.
Coming Soon → Read More
📞
IP Telephony
FreePBX Call Center Configuration in Healthcare
Building a reliable internal call center using FreePBX with SIP trunks, IVR menus, and extension management for 100+ users.
Coming Soon → Read More
Get In Touch

Contact Me

📧
EMAIL
theashikd@gmail.com
📍
LOCATION
Sylhet, Bangladesh
💼
AVAILABLE FOR
Freelance & Consulting
⏱️
RESPONSE TIME
Usually within 24 hours