Our client is seeking a Senior Penetration Tester to join their growing security team. This is a unique opportunity to work a genuine 4-day week (no compressed hours)—giving you 79 extra days off a year—while focusing on high-quality, service-led testing and client relationships.
This isn’t your typical offensive security role. You’ll be the trusted technical voice in both delivery and pre-sales, working closely with clients and internal sales teams to shape secure outcomes—not just find vulnerabilities.
Key Responsibilities

• Deliver web, infrastructure, and cloud penetration testing with a business-focused approach.
• Act as a technical advisor in pre-sales, helping scope work and educate internal sales teams on testing services.
• Build strong client relationships, translating technical findings into clear, actionable recommendations.
• Champion security best practices and support remediation discussions.
• Mentor junior testers and contribute to continuous service improvement.

Requirements

• CREST Registered Tester  or equivalent (e.g., OSCP with CREST equivalency).
• 4 years’ experience in penetration testing, preferably in a mission led environment.
• Strong communication and report writing skills.
• Experience working with sales or directly with clients.
• Service mindset—more focused on collaboration than confrontation.

Benefits

• True 4-day work week – every week. (Fridays off!)
• 79 days off a year (which includes Holiday and Bank Holidays)
• Fully Remote option.
• Training & certification budget
• Competitive salary bonus
• Supportive, growth-focused team culture

If you think this role would be a good fit, please don’t hesitate to reach out, my client is looking to move very quickly on this one, so I’d love to hear from you soon.