Open to opportunities

Sayim0x User

@sayim0xuser

Message

I am a penetration tester and security researcher specializing in web application vulnerabilities.

Bangladesh

Message

What I'm looking for

I seek hands-on roles focused on proactive vulnerability discovery and web application security, collaborative teams that value responsible disclosure, opportunities to build automation tools, and to secure high-impact public and private assets.

I am a cybersecurity professional with over three years of hands-on experience in ethical hacking, vulnerability assessment, and bug hunting on major platforms. I have discovered and reported vulnerabilities across 100+ company assets and contributed as a Strike Force member on a private platform, earning recognition among the Top 10 researchers on a major bug-bounty platform.

I focus on web application security with strong expertise in XSS, SQLi, IDOR, SSRF and OWASP Top 10 risks, and I build custom tools to automate discovery workflows. I practice responsible disclosure and work closely with program managers and security teams to support efficient patching and incident prevention.

Experience

Work history, roles, and key accomplishments

Current

Strike Force Member

Current

Yogosha

Jun 2023 - Present (2 years 2 months)

Strike Force member at Yogosha since June 2023; ranked among the Top 10 researchers and helped secure critical assets including government and banking platforms by identifying high-risk vulnerabilities and supporting timely remediation.

Ethical Hacking Network Security Vulnerability Assessment Penetration Testing OWASP Top 10 Incident Response Responsible Disclosure

Current

Bug Hunter

Current

HackerOne, Bugcrowd, YesWeHack

Freelance bug bounty hunter contributing to HackerOne, Bugcrowd, and YesWeHack with over 3 years' experience discovering and reporting vulnerabilities across assets of 100+ companies, improving their security posture.