initializing_qa_profile.sh
root@qa:~$ ./initialize_portfolio.sh
Loading QA Engineer Profile
qa_profile.sh
root@qa:~$ whoami

Sabuj Kumar Modak

QA Engineer, Security Testing

@ Singularity Limited

root@qa:~$ cat /etc/motd

Junior QA Engineer with 2 years of experience in functional, API, security, and automation testing. Skilled in test case design, execution, and Selenium automation. Experienced in Agile Scrum and passionate about improving product quality and learning modern frameworks.

root@qa:~$ █
qa_monitor.sh — bash — 80×24
sabuj@qa:~$ nmap -sS 192.168.1.0/24
Starting Nmap scan...
Host is up (0.001s latency)
22/tcp open ssh
80/tcp open http
443/tcp open https
sabuj@qa:~$ netstat -tulpn | grep LISTEN
tcp 0.0.0.0:22 LISTEN 1337/sshd
tcp 0.0.0.0:80 LISTEN 1842/nginx
sabuj@qa:~$ ps aux | grep suspicious
No suspicious processes found
sabuj@qa:~$ tail -f /var/log/auth.log
Monitoring authentication logs...
sabuj@qa:~$ █

Work Experience

Software QA Engineer

Singularity Limited

January 2025 - Present

  • Created and executed manual & automated test cases (Selenium, Java) for web apps.
  • Performed regression testing; tracked and verified fixes using test management tools.
  • Conducted security testing to identify vulnerabilities and support remediation.
  • Conducted Api testing & Load testing
  • Collaborated with developers in Agile sprints, provided testing estimates & feedbacks.

Jr. QA Engineer

Bdjobs Ltd

January 2024 - January 2025

  • Designed and executed test cases for web & mobile apps; automated key workflows with Selenium.
  • Conducted API testing with Postman and maintained structured test collections.
  • Performed load testing with JMeter and security testing for web/mobile apps.
  • •Reported defects, vulnerabilities, and performance bottlenecks; improved release quality.

Education

Bachelor of Science in Information Technology

University of Information Technology & Sciences, Dhaka
January 2020 - December 2023
Concentration: Cybersecurity
GPA: 3.22/4.0

Technical Arsenal

Manual Testing

Requirement analysis Test planning Functional testing Regression testing GUI testing System testing Acceptance testing

API Testing

Integration testing Validation testing Performance testing Negative testing Security Testing Fuzz testing

Offensive Security

VAPT Web App testing API testing OSINT Digital Forensic OWASP Top 10

Load Testing

Load testing Stress testing Spike testing Volume testing Scalability testing Endurance (Soak) testing

Automation Testing

Regression testing Security automation testing Data-Driven testing Integration testing Selenium

Tools

Selenium Postman JMete ClickUp BurpSuite Kali-Linux Nmap Zap Mongo Compass Canva GitHub Wireshark Microsoft Office

Projects & Research

Dynamic Phishing URL Detection

Machine Learning & Deep Learning algorithms for detecting phishing URLs in real-time

Python ML/DL Thesis

OTP Verification Process

Bypassed the OTP verification process using "Turbo Intruder Extension

Security testing BurpSuite

ApacheBench AB Load testing

Perfect for measuring key performance metrics like RPS, response time, throughput, and error rate

Smoke testing Ramp up Spike

Achievements & Certifications

CTF Competitions

2nd

IEEE Cyber Crawler CTF 2023

Bangladesh

11th

LEETCON HackMeIfYouCan 2023

Bangladesh

11th

National Flaghunt 2022

Bangladesh

14th

National Cyber Drill 2022

Bangladesh

Certifications

Agile Scrum Master

Simplilearn

API Security Fundamentals

APIsec University

Foundation Level Threat Intelligence Analyst

ArcX

Certified Network Security Practitioner – CNSP

The SecOps Group

Contact

contact.sh
root@qa:~$ grep -r "contact" /etc/profile
sabuj.modak.qa@gmail.com
LinkedIn
GitHub
Twitter
root@qa:~$ echo "Thanks for visiting!"

Available for qa consulting, penetration testing, and VAPT.