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Penetration Tester: Ethical Hacker CEH, OSCP, OSCE, GPEN

Full-time

GVA Partners

Job title : Penetration Tester: Ethical Hacker CEH, OSCP, OSCE, GPEN

Job Location : Lagos Deadline : November 24, 2026 Quick Recommended Links

Job Summary

  • We are seeking a skilled and driven penetration tester with a hacker mindset to proactively simulate real-world attacks to identify, assess, and exploit security vulnerabilities.
  • You’ll be part of a fast-paced security team, expected to think like an adversary while maintaining ethical standards and compliance.
  • You must be capable of both automated and manual testing, custom script writing, and producing detailed yet understandable reports.

Key Responsibilities

  • Conduct black-box, gray-box, and white-box penetration tests on: Web apps, Mobile apps, APIs.
  • Perform social engineering and phishing simulation campaigns.
  • Develop and execute custom exploits where necessary.
  • Document proof-of-concept exploits and provide risk-ranked findings.
  • Conduct red team exercises simulating advanced persistent threats (APT).
  • Analyze security findings from Hacker One and recreate vulnerabilities.
  • Collaborate with developers, Appsec Team, DevOps, and product teams to provide remediation guidance.
  • Stay current on CVEs, exploits, hacker tools, and threat actor techniques (TTPs).
  • Weekly updates and debriefs with stakeholders.
  • Manual Application and Api Penetration testing based on Owasp top 10 (Mobile,Web,Api).

Minimum Requirements

  • Bachelor's Degree with 5 years of experience.
  • Proven experience in offensive security or ethical hacking.
  • Demonstrated history with Bug Bounty programs or CTF competitions.
  • Deep understanding of web technologies, cloud platforms, and modern infrastructure.
  • Ability to write and explain exploits or security PoCs clearly.
  • Strong report writing and communication skills.

Tools and Platforms (it’s expected to have knowledge of how to use at least one of each of the listed tools):

  • Burp Suite, OWASP ZAP, Nmap.
  • Mobile security tools: MobSF, Frida, jadx, Objection, genny motion, Andriod studio.
  • Kali Linux, Parrot OS, custom scripts in Python, Bash, PowerShell.
  • Postman, for API testing.

Security Standards & Compliance:

  • OWASP Top 10 (Web, API, Mobile).
  • CIS Benchmarks.
  • NIST 800-53, ISO/IEC 27001.

Preferred Qualifications:

  • CEH, OSCP, OSCE, GPEN, or similar certifications.
  • Experience working in CI/CD environments and with DevSecOps teams.
  • Programming or scripting experience (Python, JavaScript, Nodejs, php, Go, Bash).
Vacancy posted a month ago
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