Senior Offensive Security Analyst – Red Team & Pen Testing Lead

BDO; Greater London; On-site; GBP 55,000 - 75,000; Full time

Job summary

A leading accountancy and advisory firm in Greater London seeks a Senior Offensive Security penetration tester to conduct comprehensive penetration testing and enhance client security postures. The ideal candidate must hold strong certifications in penetration testing and have solid experience in offensive security. You will work on diverse engagements and lead initiatives, while continuously staying updated on the evolving threat landscape. The position offers growth opportunities and a supportive team environment.

Benefits

Structured development frameworks

Mentorship resources

Collaborative team culture

Qualifications

• Strong certification in penetration testing such as OSCP, CRT, or OSWA.
• Solid experience in offensive security through professional work, competitions, or research.
• Proven ability to deliver impactful client engagements.

Responsibilities

• Conduct sophisticated penetration testing and red team engagements across client systems.
• Identify vulnerabilities and enhance client security postures.
• Lead initiatives to develop cutting-edge penetration testing methodologies.

Skills

Penetration testing

Network protocols

Problem-solving

Scripting (Python, Bash, PowerShell)

Tools proficiency (Metasploit, Burp Suite)

Education

Strong certifications in penetration testing (OSCP, CRT, etc.)

Tools

Metasploit

Burp Suite

Nessus

CobaltStrike

Job description

A leading accountancy and advisory firm in Greater London seeks a Senior Offensive Security penetration tester to conduct comprehensive penetration testing and enhance client security postures. The ideal candidate must hold strong certifications in penetration testing and have solid experience in offensive security. You will work on diverse engagements and lead initiatives, while continuously staying updated on the evolving threat landscape. The position offers growth opportunities and a supportive team environment.