zisan@linux-dev:~

➜ ~ neofetch

 ███████╗██╗ █████╗ 
 ╚══███╔╝██║██╔══██╗
   ███╔╝ ██║███████║
  ███╔╝  ██║██╔══██║
 ███████╗██║██║  ██║
 ╚══════╝╚═╝╚═╝  ╚═╝

OS: Zia Uddin Zisan x86_64

Host: Chattogram, Bangladesh

Kernel: 6.1.0-sysadmin-amd64

Uptime: 2+ years

Packages: CCNA, MTCNA, CompTIA A+

Shell: bash · zsh

Terminal: ssh · tmux · vim · htop

Tools: traceroute · nslookup · ping

CPU: Embedded Net Eng @ 100%

Memory: 40+ skills loaded

Network: eth0: UP · 10Gbps

Disk: 93 repos / ∞ capacity

➜ ~ ip a show eth0█

Open to collaboration

Hello, I'm
Zia Uddin Zisan

System & Network Engineer » |

Building robust network infrastructure, automating systems with DevOps practices, and contributing to open-source projects. CCNA, MTCNA & CompTIA A+ certified.

View Projects Contact Me
10 Certifications
40+ Technical Skills
2+ Years in Networking
93 GitHub Repos

# About Me

I'm Zia Uddin Zisan, an Associate System & Network Engineer at Connect3, based in Chattogram, Bangladesh. I configure and manage Cisco routers,switches, troubleshoot OLTs from multiple vendors, and resolve routing, switching & VLAN issues — keeping broadband services reliable for thousands of subscribers.

Beyond the day job I maintain a forked build of Paranoid Android (AOSPA), where I cherry-pick upstream commits and ship custom ROMs. I also explore DevOps workflows — containerized monitoring stacks, CI/CD pipelines, and automation scripts — always looking for ways to make infrastructure more resilient.

Certified in CCNA, MikroTik MTCNA, and CompTIA A+, with hands-on experience in Linux server administration, network security, and hardware maintenance. Currently pursuing a BSc in Computer Science & Engineering at University of Creative Technology, Chittagong.

github.com/Xeesan
Connect3
Chattogram, BD
BSc CSE (Pursuing)
CCNA · MTCNA · CompTIA A+
Cisco · OLT · MikroTik
AOSPA Fork Maintainer
Bengali · English · Hindi

# Technical Arsenal

Network Infrastructure

IPv4/IPv6TCP/IPDNSDHCPVLANsVPNsBGPOSPFLAN/WANNAT/PATSubnettingARP

Routing & Security

MikroTik RouterOSCisco IOSPPPoEFirewallNetwork SecurityTroubleshootingACLsQueue ManagementiptablesWireless

Server & OS Administration

Ubuntu/DebianCentOS/RHELWindows ServerLinux CLIApache2NginxSSHCron JobssystemdDNS Server

Virtualization & Cloud

VMware ESXiVirtualBoxHyper-VWSLCloud ComputingCloudflare TunnelDockerProxmox

DevOps & Automation

Bash/ShellPythonGitGitHubGoogle Apps ScriptTelegram APIAnsibleCI/CDCrontab

Hardware & Monitoring

Computer HardwareRepair & MaintenanceSmokepingRRDToolMTRPacket AnalysisWiresharkZabbixSNMPPing/Traceroute

# Certifications & Licenses

Verified credentials powering the infrastructure

Cisco Certified Network Associate (CCNA)

Cisco / New Vision IT Completed 2024
Training

MikroTik Certified Network Associate (MTCNA)

MikroTik / New Vision IT Issued Sep 2024 · Credential ID: 2094N240936
Training

CompTIA A+ Core 1 (220-1101)

CompTIA Issued Oct 2024
Professional

The Bits and Bytes of Computer Networking

Google (Coursera) Issued Mar 2024
Coursera

Technical Support Fundamentals

Google (Coursera) Issued Feb 2024
Google

Foundations of Project Management

Google (Coursera) Issued 2024
Google

Mastering Linux: Complete Guide to Becoming a Linux Pro

Udemy Issued Mar 2024
Udemy

Linux Command Line Terminal Basic for Beginners

Udemy Issued Feb 2024
Udemy

Hardware Maintenance

MuktoPaath Issued Apr 2024
MuktoPaath

Adobe Lightroom Masterclass

Udemy Issued Feb 2024
Udemy

# GitHub Projects

View All

GBD — Goodbye Dopamine

A gamified productivity suite for students. Combines task planning, exam tracking, GPA management, focus sessions, a money manager, and an AI assistant (Gemini) — all in a PWA with offline support, push notifications, and XP-based leveling.

React/TS Supabase Vite
Mar 2026

Smokeping Docker Stack

Fully containerized Smokeping environment for network latency monitoring. Bundles Smokeping daemon, Apache2 web UI, geolocation-aware Telegram alerts, and sidecar containers for Cloudflare Tunnel and Tailscale zero-trust access.

Docker Shell
Dec 2025

Client Request Automation

End-to-end automation workflow capturing user inputs via Google Forms, processing via backend scripts with instant Telegram notifications for zero-latency staff alerts.

JavaScript Apps Script
Jan – Feb 2026

AOSPA-alioth (Paranoid Android)

Forked and independently maintained Paranoid Android custom ROM for POCO F1, POCO F3, and currently POCO F5. Cherry-picked commits, merged upstream updates, and managed 33+ repositories including device trees, kernel, and vendor configs.

Java C++ Makefile
Open Source
View All on GitHub

# Where I've Been

Current

Associate System & Network Engineer

Connect3

May 2026 – Present • Full-time • Chittagong
  • Configured and managed Cisco switches, and networking devices from multiple vendors.
  • Configured and troubleshot OLTs from various vendors to ensure reliable broadband services.
  • Diagnosed and resolved network issues related to routing, switching, VLANs, and subscriber connectivity.
  • Assisted with network upgrades and infrastructure improvements.
  • Monitored network performance and responded to service disruptions.
  • Worked closely with team members to resolve technical issues and provide user support.
Cisco SwitchesOLTRouting & SwitchingVLANsNetwork Monitoring

Embedded Network Support Engineer

Mux Technologies

Nov 2024 – Apr 2026 • Full-time • Chattogram
  • Configured and maintained network devices for performance and security.
  • Diagnosed connectivity issues to minimize downtime and maintain user access.
  • Collaborated with team members to resolve technical issues.
  • Monitored network traffic to identify bottlenecks and vulnerabilities.
  • Delivered technical support for network-related inquiries.
Network SupportSecurityMonitoringTroubleshooting

Intern — Network Operation Center

New Vision IT

Jun 2024 – Oct 2024 • Chattogram
  • Completed CCNA and MTCNA certification training with hands-on expertise in Cisco and MikroTik network configuration and troubleshooting
  • Applied networking concepts through practical lab exercises and collaborative projects, developing strong problem-solving skills.

# Education

Current

BSc in Computer Science & Engineering

University of Creative Technology, Chittagong

Jul 2025 – Present

# ping me --no-timeout

No firewall rules here. Port 443 is wide open — drop a SYN and I'll ACK back.

Email

zia.zisan@outlook.com

GitHub

github.com/Xeesan

LinkedIn

zia-uddin-zisan

Telegram

@xisan

X (Twitter)

@xisan_