Senior Penetration Tester: Lead Offensive Security

Saepio Solutions Ltd; United Kingdom; Remote; GBP 75,000 - 110,000; Full time

Benefits offered by this job

25 days leave

Health Insurance (BUPA Premium)

Pension plan (Royal London)

Learning & development culture

International incentive trips

Social events

Job summary

Ruptura InfoSecurity is seeking an experienced Senior Penetration Tester to lead complex testing engagements across infrastructure, web apps, cloud and internal environments. You will identify attack paths, craft remediation guidance and present findings to technical and executive stakeholders.

Join a high-performing offensive security practice, mentor junior consultants, and contribute to methodological development while staying ahead of emerging attack techniques and trends.

Qualifications

• CREST CRT, CCT Infra, CCT App or equivalent.
• Offensive Security certifications such as OSCP, OSWE, OSEP, OSED or OSCE3.
• Experience delivering red team or adversary simulation engagements.
• Cloud security testing experience across Azure, AWS or Google Cloud.
• Development or scripting experience using Python, PowerShell, C# or similar languages.
• Experience contributing to security research, tooling development or vulnerability discovery.

Responsibilities

• Lead the delivery of infrastructure, web application, cloud and internal penetration testing engagements.
• Conduct advanced adversary simulation and security assessments against complex client environments.
• Identify, exploit and clearly articulate security weaknesses, attack paths and business risks.
• Produce high-quality technical reports containing detailed findings, supporting evidence and practical remediation guidance.
• Present findings and recommendations to technical and executive-level stakeholders.
• Provide strategic security advice and consultancy to clients throughout the engagement lifecycle.
• Support and mentor junior consultants, helping to develop technical capability across the team.
• Contribute to the development of offensive security methodologies, research, tooling and service offerings.
• Assist with peer reviews and quality assurance activities to maintain exceptional delivery standards.
• Stay current with emerging attack techniques, vulnerabilities and offensive security trends.

Skills

CREST CRT

CCT Infra

CCT App

OSCP

OSWE

OSEP

OSED

OSCE3

Red team

Adversary simulation

Cloud security

Azure

AWS

Google Cloud

Python

PowerShell

C#

Security research

Tooling

Job description

Ruptura InfoSecurity is seeking an experienced Senior Penetration Tester to lead complex testing engagements across infrastructure, web apps, cloud and internal environments. You will identify attack paths, craft remediation guidance and present findings to technical and executive stakeholders.

Join a high-performing offensive security practice, mentor junior consultants, and contribute to methodological development while staying ahead of emerging attack techniques and trends.