Available for Freelance Projects
Sarwar Jahan
Shajib
WordPress Expert · Ethical Hacker · Excel Automation Specialist.
Building secure, high-performance digital solutions since 2019.
WordPress Dev
Ethical Hacking
Excel Expert
AI Tools
Sarwar Jahan Shajib
Assistant Manager · BRAC University
5+
Years Exp
50+
Projects
3
Certs
WooCommerce Expert
Kali Linux · Metasploit
Excel Automation
What I Do
Expert Services
Across Three Domains
From building robust WordPress stores to securing networks and automating complex Excel workflows — I bring certified expertise.
WordPress Development & Security
Full-cycle WordPress solutions — from scratch builds to WooCommerce stores, plugin development, theme customization, and malware removal. I handle security hardening, penetration testing, and SEO optimization so your site stays fast, safe, and ranking.
WordPress
WooCommerce
Elementor
PHP / MySQL
WordPress Security
Malware Removal
WPScan
Yoast SEO
Page Speed
cPanel / Hosting
Site Migration
Theme Dev
Ethical Hacking & Cyber Security
Certified security expert specialising in penetration testing, vulnerability assessments, red/blue team operations, bug bounty hunting, and digital forensics using industry-standard tools on Kali Linux.
Pen Testing
Metasploit
Burp Suite
Nmap / Wireshark
SQL Injection
XSS / CSRF
OSINT
SIEM / Wazuh
CTF
Bug Bounty
Excel Automation & Data Analysis
Advanced Excel solutions including VBA macros, Power Query, interactive dashboards, and Google Apps Script automation to eliminate repetitive tasks and deliver actionable business insights.
Excel VBA
Power Query
Pivot Tables
Power BI
Google Sheets
Apps Script
VLOOKUP
Dashboards
Data Cleaning
AI-Powered Workflow Automation
Integrating AI tools — ChatGPT, MidJourney, Runway ML, Synthesia — with Google Workspace automation to build efficient, scalable workflows. Prompt engineering, content automation, and task orchestration.
Prompt Engineering
Google Apps Script
ChatGPT
MidJourney
SEO Automation
Mail Merge
JIRA Integration
Career
Professional Journey
5+ years of delivering across university administration, e-commerce, security, and web development.
Ethical Hacking & Cyber Security Expert
Penetration testing across web apps, networks, and Active Directory. Red & Blue team operations, malware analysis, digital forensics, and incident response using Metasploit, Burp Suite, Wazuh, and Splunk.
Department Coordination Officer
Full departmental operations for CSE dept. — faculty support, student services, workflow automation via Google Apps Script, exam coordination, ERP management, and system development.
Senior Executive – Web Admin
Led e-commerce development, security hardening, order management, email automation, social media, cPanel, and vendor management for a major electronics retailer.
Junior Executive – IT, Web Development
Daily backend diagnosis, custom PHP/CSS snippets, security & data protection, WordPress customization, and customer support via live chat and calls.
Business Analyst (Internship)
Contributed to Bangladesh Government projects — RDCD, MyGov (a2i), MuktoPaath. Visited 11 government departments for SRS analysis and rapid digitisation before December 2021.
WordPress Designer & Security Specialist
Designed responsive sites, built WooCommerce stores, implemented SEO, managed security, and provided ongoing maintenance for international clients.
Government Project Contribution: Partially contributed to Bangladesh Government's digitisation initiative with OrangeBD — working on RDCD, a2i (MyGov), and MuktoPaath projects alongside 11 government departments.
Expertise
Skills & Mastery
Certified expertise across three core domains, backed by real-world delivery.
WordPress & Web
Ethical Hacking & Security
Excel & Data Automation
Toolbox
Tools & Technologies
WordPress
WooCommerce
Metasploit
Burp Suite
Wireshark
Kali Linux
Excel / VBA
Google Workspace
Power BI
Python
MySQL
cPanel
Nmap
Splunk / Wazuh
Trello / JIRA
ChatGPT
MidJourney
Runway ML
Credentials
Certifications
Formally trained and certified across all three core disciplines.
Certified WordPress Developer
Coders-Trust Bangladesh · Batch CTG-316 · 2019–2020
Certified Ethical Hacking & Cyber Security
CodemanBD · 2026
Certified Excel Expert
Microsoft Excel Advanced Certification
BSc in Computer Science & Engineering
Daffodil International University · 2016–2021
Get in Touch
Let's Build
Something Great
Available for WordPress projects, security audits, Excel automation, and freelance collaborations. Based in Dhaka, Bangladesh — working globally.
Dhaka, Bangladesh