⬤ Available for projects

Rejen Thompson

Cybersecurity Consultant & Security Researcher

Protecting digital assets through offensive security, vulnerability assessments, and innovative security solutions. Published CVE contributor.

Building expertise in –

Web Application Security, Penetration Testing, Vulnerability Assessment, Cloud Security, Security Automation, CTF Challenges, Open Source Intelligence, Security Research & Development

⬤ View my work

Selected Work

01

PentestPilot

AI-powered security scanner combining LangChain agents with OWASP ZAP for automated penetration testing

Python AI/ML Automation
02

Enhanced Security Monitoring

Comprehensive security monitoring system with real-time threat detection and incident response capabilities

Python Security Monitoring
03

ATS Resume Enhancement Tool

AI-powered tool to optimize resumes for ATS systems with keyword analysis and formatting recommendations

Python AI/ML NLP

About Me

Cybersecurity professional specializing in offensive security, vulnerability assessments, and penetration testing.

1
Published CVE
12+
Critical Vulnerabilities
5K+
Users Protected
4
Certifications

Experience

Oct 2024 – Present

Independent Cybersecurity Freelancer

Provide comprehensive security assessments for startups and SMEs, specializing in web application penetration testing, API security audits, and cloud infrastructure reviews. Design capture-the-flag challenges for educational platforms and deliver customized vulnerability remediation strategies with actionable mitigation guidance.

May – July 2025

Security Engineer Intern – Rocketlane

Conducted comprehensive internal penetration tests across web applications and APIs, identifying 12+ critical and high-severity vulnerabilities with verified exploits. Performed security audit of AWS infrastructure covering 10+ services (S3, IAM, RDS, Lambda), implementing security hardening measures that reduced attack surface by 30%. Collaborated with engineering teams to integrate security best practices into CI/CD pipelines.

Nov 2024 – Present

Cybersecurity Content Developer – Bridge

Develop comprehensive cybersecurity curriculum covering penetration testing methodologies, secure coding practices, and incident response procedures. Create hands-on lab exercises and real-world scenarios that simulate production security challenges. Lead team of technical writers and subject matter experts to ensure content accuracy and relevance to industry standards including OWASP, NIST, and CIS frameworks.

Jan – Sep 2024

Offensive Security Engineer – CyberXtron

Led offensive security initiatives discovering 7 critical vulnerabilities across client applications, including authentication bypass, SQL injection, and remote code execution flaws. Reported and coordinated responsible disclosure of CVE-2024-XXXXX affecting 10,000+ installations. Developed internal security tools for dark web monitoring and attack surface management, reducing client exposure by 25% through continuous asset discovery and automated vulnerability scanning.

Capabilities

Penetration Testing

Web application security, OWASP Top 10, vulnerability assessment

Security Tools

Burp Suite, Metasploit, Nmap, OWASP ZAP, custom Python tools

Cloud Security

AWS security audit, Azure configuration, IAM policies

Threat Monitoring

Splunk, real-time dashboards, SIEM

Education & Certifications

Shiv Nadar University, Chennai

2022 – 2026 | GPA: 8.0/10

Computer Science with focus on Cybersecurity

Google Cybersecurity Professional
TCM Security: Practical Ethical Hacking
INE Security - EJPT
TryHackMe - PT1

Key Achievements

  • ⬤ OWASP Chapter Lead at Shiv Nadar University
  • ⬤ Published CVE for vulnerability in open-source project
  • ⬤ 4th place Edita CTF, 6th VIT CTF, top 10 Amirtha CTF

Let's work together