Senior Penetration Tester

Integrity360

Senior Penetration Tester at Integrity360, the largest independent cyber security provider in Europe. Delivering advanced testing and security assessments while mentoring junior staff.

Posted 4/23/2026full-timeDublin • 🇮🇪 IrelandSeniorWebsite

Tech Stack

Tools & technologies

CloudCyber SecurityFirewallsJava.NETPHPPythonRubyUnix

About the role

Key responsibilities & impact

Deliver advanced penetration testing and security assessments across various environments and technologies
Support and deliver testing projects, including pre-sales activities
Produce high-quality technical reports and executive summaries
Present findings to clients and internal stakeholders
Research new vulnerabilities, attack techniques, and tools
Act as a mentor for junior and mid-level testers
Collaborate with other departments and represent the company in client engagements

Requirements

What you’ll need

At least 5 years of real-world professional experience
Fully independent with consultancy and tutoring skills
Solid experience in information security
Industry experience as a penetration tester
Development and/or source code review experience in C/C++, C#, VB.NET, ASP, PHP, Java, Python or Ruby
Strong Unix, Windows and networking security skills
Familiarity with general application and network security concepts
Manual penetration testing experience
Experience developing custom scripts or tools used for vulnerability scanning and identification
In-depth networking knowledge (ports, protocols, firewalls, etc.)
Understanding of development frameworks
Broad understanding of hosting/cloud environments
Knowledge of advance cloud architecture
Relevant certifications such as OSCP, OSCE, OSEP, CRTO, CREST, or equivalent
Bachelor’s degree in Computer Science, Cybersecurity, or related field (or equivalent hands-on experience)

Benefits

Comp & perks

Learning and development opportunities
Dynamic culture fostering innovation and collaboration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

penetration testingsecurity assessmentsC/C++C#VB.NETASPPHPJavaPythonRuby

Soft Skills

consultancy skillstutoring skillsmentoringcollaborationpresentation skills

Certifications

OSCPOSCEOSEPCRTOCREST