Open to opportunities

Nickson Theuri

@nicksontheuri

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I uncover web, API, and internal-system vulnerabilities through hands-on penetration testing and security research.

Kenya

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What I'm looking for

I'm looking for opportunities to apply penetration testing, vulnerability assessment, and offensive security skills while learning from technical teams and improving organizational security through practical testing and remediation support.

I'm conducting freelance penetration testing and security research across web applications and APIs, identifying authentication, access-control, and injection vulnerabilities. I document findings with risk analysis and remediation recommendations using Nessus, Metasploit, Burp Suite, and OWASP ZAP.

I've also supported enterprise troubleshooting, network configuration, endpoint management, security updates, and documentation at Hybrid Systems. Through DVWA, OWASP Juice Shop, Active Directory labs, and bug bounty research, I continue building practical offensive-security skills in reconnaissance, enumeration, exploitation, privilege escalation, and lateral movement.

Experience

Work history, roles, and key accomplishments

Current

Penetration Tester / Security Researcher

Current

Freelance / Independent Security Testing

Jan 2024 - Present (2 years 7 months)

Conducts vulnerability assessments and penetration testing on web applications and APIs, identifying security weaknesses and documenting findings with risk analysis and remediation recommendations.