About the job About Cyberintelsys Cyberintelsys is a cybersecurity consulting and services provider specializing in Vulnerability Assessment and Penetration Testing (VAPT), Cloud Security, IT/OT Security, Compliance Consulting, and Managed Security Services.
We work with organizations across multiple industries to identify security weaknesses, validate real-world attack scenarios, and help clients strengthen their overall security posture. Role Overview We are looking for a skilled Penetration Tester (OSCP / OSWE Certified) to join our cybersecurity team. The candidate will conduct security assessments across web applications, APIs, mobile applications, networks, infrastructure, and cloud environments. OSCP / OSWE certifications are mandatory, along with strong hands-on penetration-testing and vulnerability research skills.

Key Responsibilities
• Perform end-to-end Vulnerability Assessment and Penetration Testing (VAPT) across web applications, APIs, mobile applications, networks, infrastructure, and cloud environments.
• Perform web application security testing based on OWASP Web Security Testing Guide (WSTG).
• Conduct network and infrastructure penetration testing, including external and internal assessments.
• Perform vulnerability research, exploit validation, proof-of-concept development, and security analysis.
• Use manual techniques in combination with automated security tools to maximize vulnerability coverage.
• Document vulnerabilities with detailed technical evidence, reproduction steps, impact assessment, risk ratings, and remediation recommendations.
• Prepare detailed technical VAPT reports and executive-level security summaries.




• Participate in client discussions and explain technical vulnerabilities and remediation requirements.
• Continuously research emerging CVEs, exploits, attack techniques, and offensive security methodologies.
• Contribute to improving internal penetration-testing methodologies, checklists, tools, and automation. Mandatory Certifications The candidate must hold both of the following certifications:
• OSCP – Offensive Security Certified Professional
• OSWE – Offensive Security Web Expert Preferred Qualifications
• Experience participating in Bug Bounty programs or Vulnerability Disclosure Programs (VDPs).
• Experience discovering and responsibly disclosing security vulnerabilities.
• Strong understanding of CVEs, CVSS, CWE, and vulnerability classification.
• Experience with exploit development or exploit modification.
• Knowledge of mobile application security testing.
• Knowledge of Active Directory penetration testing.
• Experience developing custom security tools or automation scripts.
• Strong technical report-writing and client communication skills.

What We Offer
• Opportunity to work on real-world security assessments for clients across multiple industries.
• Exposure to web, API, mobile, network, cloud, and infrastructure penetration testing.
• Chance to work on complex and challenging security vulnerabilities.
• Mentorship and collaboration with experienced cybersecurity professionals.
• Exposure to offensive security tools, methodologies, and real-world attack scenarios.
• Opportunities for professional growth and advanced cybersecurity research.
• Certification and continuous technical learning opportunities.

📌 Penetration Tester | OSWE (Chennai)
🏢 Cyberintelsys Consulting Services Private
📍 Chennai