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Information Technology 🏢 Full Time ⭐️ Verified

Senior Penetration Tester

Apex Cyber Defense
London
Salary Estimate
GBP 80.000 – GBP 110.000
Latest
Live Update
22 Mei 2026
Deadline
22 Mei 2027

Job Description

We are seeking a world-class Senior Penetration Tester to join our elite security operations team in London. At Apex Cyber Defense, we don't just defend; we proactively hunt for vulnerabilities before malicious actors can exploit them. You will be responsible for conducting complex red team engagements, performing deep-dive vulnerability assessments, and ensuring our clients' infrastructure remains impenetrable.

Why Join Apex?

Impactful Work: Protect critical infrastructure and high-profile assets.

Top-Tier Tools: Access to the latest commercial and open-source security frameworks.

Remote-First Culture: Flexible working arrangements with a focus on work-life balance.

Growth: Continuous learning opportunities and clear pathways to leadership roles.

Responsibilities

  • Execute Red Team Operations: Plan and conduct realistic, multi-stage cyberattacks against internal and external networks to evaluate defensive measures.
  • Vulnerability Assessment: Perform comprehensive security audits and penetration tests on web applications, network systems, and mobile platforms.
  • Report Generation: Produce detailed, actionable technical reports for stakeholders, clearly articulating findings, risk levels, and remediation strategies.
  • Tool Development: Contribute to the development and automation of custom penetration testing tools and scripts to increase testing efficiency.
  • Threat Modeling: Collaborate with software engineering teams to design secure architectures and identify potential attack vectors during the development lifecycle.
  • Training & Mentorship: Mentor junior security analysts and conduct internal security awareness training sessions.

Qualifications

  • Certifications: Active OSCP or CISSP certification is highly preferred; CCE or CEH is required.
  • Experience: Minimum of 5 years of professional experience in penetration testing or red teaming.
  • Technical Skills: Proficiency in Python, Bash, or PowerShell scripting for automation.
  • Knowledge: Deep understanding of the OWASP Top 10, common web vulnerabilities (XSS, SQLi), and network protocols.
  • Tools: Hands-on experience with tools such as Burp Suite, Metasploit, Wireshark, and Nmap.
  • Soft Skills: Excellent communication skills with the ability to explain complex technical concepts to non-technical stakeholders.

Required Skills

Penetration Testing Red Teaming Python SQL Injection XSS Network Security ISO 27001 GDPR Compliance Burp Suite Metasploit

Ready to Take on This Challenge?

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