Zayn Khan CV
Available immediately Tangail, Bangladesh · GMT+6

Zayn Khan

>_ IT Support Specialist

I fix what's broken — from the circuit board to the network edge. Three years running my own IT services business, fifty students trained to Level 2 support, and seven years of steady study in networking, Linux and security.

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L1–L2 HelpdeskBoard-level repairWindows deploymentData recoveryLinux & networking
01

The person behind the toolkit

I've owned and run an independent IT services and training business, which means I've been the technician, the trainer, the support desk and the one answering to the customer — often on the same day.

My hands-on strength is hardware: tracing faults down to individual components on a circuit board, rebuilding machines, deploying Windows cleanly and getting lost data back when it matters. Around that sits seven years of continuous study in networking, Linux, cybersecurity, IT asset management and AI.

I work in a disciplined way — reproduce the fault, measure, isolate, fix, verify, document — and I like leaving people more capable than I found them.

Born
12 Jan 2004
Nationality
Bangladeshi
Languages
English (C1) · Bengali (native)
Availability
Immediate
0years running my own IT business
0students trained to Level 2 support
0years of continuous technical study
0programming languages in working use
02

Where the work happened

2022 — 2025

Owner, IT Trainer & Hardware Technician

Computer Gallery · Bangladesh

Own business

Leadership & training

  • Owned and ran Computer Gallery end to end — service delivery, clients and day-to-day operations.
  • Designed and delivered Level 2 IT training for 50 students in hardware, networking and troubleshooting.
  • Taught user account management and incident ticketing to helpdesk standard.
  • Mentored trainees through real support and maintenance jobs until they were job-ready.

Technical operations

  • Diagnosed and repaired desktops and laptops, including component and circuit-board faults.
  • Replaced, upgraded and configured hardware; kept printers and peripherals in service.
  • Installed and configured Windows, drivers and essential business software.
  • Recovered critical data and closed out complex issues with minimal downtime for clients.
Ticket lifecycleSLA 04:00:00
New
Triage
In progress
Resolved
Closed
#TKT-1042 Outlook profile not syncing P3
2020 — 2022

Higher Secondary Certificate (HSC) — Science

Kalihati Shajahan Siraj College · Tangail

Professional training

Advanced Hardware Inspection & Repair

Circuit-board repair and component-level diagnostics

2019 — Present

Independent technical study

Networking · Linux · Cybersecurity · IT asset management · AI fundamentals

03

A small-office network, done properly

The kind of network I build and support: segmented VLANs, a single hardened edge, central identity and logging, and backups that actually restore. Hover any device. Traffic is live.

Web DNS / Auth Backup Logs Hostile
Blocked 0

How one request travels the wire

Keep scrolling. A single web request is wrapped layer by layer — application data, then TCP, then IP, then an Ethernet frame — until it leaves the card as raw bits.

  1. L7Application
  2. L6Presentation
  3. L5Session
  4. L4Transport
  5. L3Network
  6. L2Data link
  7. L1Physical
DataHTTP · HTTPS · DNS
ETHMAC src/dst IP10.0.10.21 → 93.184.216.34 TCP:51544 → :443 SESid 7f3a GET /index.html9f$Kq#e1!zA0 FCS

The browser builds an HTTP request for the page the user asked for.

04

Security in layers, not in hope

No single control stops everything. Each ring below catches what the one outside it misses — and when something still gets through, there's a plan for that too.

Defence in depthlive
DATA protected
Incident responseNIST-style cycle
01 Prepare

Asset inventory, backups tested, contacts and runbooks ready before anything goes wrong.

soc@edge-fw01:~$ tail -f /var/log/events 0 allow · 0 drop
01

Least privilege

Standard accounts by default, admin rights only where the job needs them.

02

Patch & harden

Windows updates, driver hygiene, unused services and ports switched off.

03

3-2-1 backups

Three copies, two media, one offline — and restores tested, not assumed.

04

Digital footprint

Know what a person or business exposes publicly before someone else maps it.

05

Down to the component

ZK-01 diagnose · repair
VCC 3.3V OK VCORE 1.05V OK C12 short FAULT
  1. 01

    Reproduce

    See the fault happen. Note symptoms, beep codes, what changed.

  2. 02

    Measure

    Check power rails, continuity and resistance against known-good values.

  3. 03

    Isolate

    Narrow it to one component — a shorted cap, a failed MOSFET, a bad port.

  4. 04

    Repair

    Replace or rework the part, or swap and upgrade the module.

  5. 05

    Verify & hand over

    Stress test, restore data and software, explain what failed and why.

06

What I bring to the desk

01Hardware diagnostics & repair
02IT helpdesk support (L1–L2)
03Technical training & mentoring
04Windows deployment & setup
05Networking & Linux
06Data backup & recovery
07Microsoft 365 administration
08CRM systems
09Document control & records
10Incident ticketing & resolution
11IT asset & inventory control
12Preventive maintenance
13Root-cause troubleshooting
14Client service & handling
15AI & LLM analysis

Office & cloud

WordExcelPowerPointOutlookMicrosoft 365OneDriveGoogle DriveAcrobatCanva

Systems & support

WindowsLinuxNetworkingCRM systemsDocument controlIT asset management

Security

Cybersecurity fundamentalsDigital footprint analysis

AI & LLMs

Prompt engineeringAI reverse engineeringLLM analysis
07

Let's get your systems running

Open to IT support, helpdesk and hardware roles. I can start straight away.

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