Penetration Tester / Offensive Security Engineer

PTM (Persada Teknologi Mandiri); Jakarta Pusat; On-site; IDR 279,000,000 - 558,000,000; Full time

Job summary

PT Persada Teknologi Mandiri (PTM) is seeking a skilled Penetration Tester to join our cybersecurity team in Jakarta. You will perform hands-on testing of web applications, APIs, networks, and IT infrastructure, and help mature security across client engagements.

You should have practical offensive security experience, familiarity with Burp Suite, Nmap, Metasploit, Kali Linux, and scripting in Python/Bash/PowerShell.

Qualifications

• Must be available to join immediately (H+1) after interview.
• Familiar with AI-assisted penetration testing tools.
• Certifications such as OSCP, OSCP+, eJPT, PNPT, or CEH are a plus, but practical skills matter more.

Responsibilities

• Conduct penetration testing on web applications, APIs, networks, servers, and IT infrastructure.
• Identify, validate, and assess security vulnerabilities.
• Perform vulnerability assessments, exploitation, and post-exploitation within authorized scopes.
• Prepare technical reports, PoC demonstrations, and remediation recommendations.
• Collaborate with internal teams and clients to improve cybersecurity posture.
• Conduct security retesting to verify remediation.

Skills

Penetration testing

OWASP Top 10

Reporting & docs

Analytical thinking

Problem solving

Python/Bash/PowerShell

Tools

Burp Suite

Nmap

Metasploit

Nuclei

Kali Linux

Job description

PT Persada Teknologi Mandiri (PTM) is looking for a skilled and passionate Penetration Tester to join our cybersecurity team!

• Conduct penetration testing on web applications, APIs, networks, servers, and IT infrastructure.
• Identify, validate, and assess security vulnerabilities.
• Perform vulnerability assessments, exploitation, and post-exploitation activities within authorized scopes.
• Prepare technical reports, proof-of-concept (PoC) demonstrations, and remediation recommendations.
• Collaborate with internal teams and clients to improve cybersecurity posture.
• Conduct security retesting to verify vulnerability remediation.
• Hands-on experience in penetration testing or offensive security.
• Good understanding of OWASP Top 10, network security, and common attack vectors.
• Familiar with tools such as Burp Suite, Nmap, Metasploit, Nuclei, and Kali Linux.
• Knowledge of Linux, Windows, Active Directory, and networking fundamentals.
• Ability to perform both automated and manual security testing.
• Good analytical, problem-solving, and technical reporting skills.
• Familiarity with Python, Bash, or PowerShell is an advantage.
• Certifications such as OSCP, OSCP+, eJPT, PNPT, or CEH are a plus, but practical skills matter more than certifications.
• Must be available to start as early as one day (H+1) after successfully completing the interview and selection process.
• Experience in Red Team operations or adversary simulation.
• Experience with cloud security, container security, or Active Directory exploitation.
• Participation in CTF competitions, bug bounty programs, or security research.
• Familiarity with AI-assisted penetration testing tools.

IMPORTANT: This position is strictly for candidates who are available to join immediately (H+1 after a successful interview and selection). Candidates requiring a notice period will not be considered.

We look forward to welcoming you to PT Persada Teknologi Mandiri (PTM)!

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