Penetration Tester

About Us 

Integrity360 is the largest independent cyber security provider in Europe, with a growing international presence spanning the UK, Ireland, mainland Europe, Africa and the Caribbean. With over 700 employees, across 12 locations, and six Security Operations Centres (SOCs)—including locations in Dublin, Sofia, Stockholm, Madrid, Rome, Naples and Cape Town—we support more than 2,500 clients across a wide range of industries.

Over 80% of our team are technical experts, focused on helping clients proactively identify, protect, detect and respond to threats in an ever-evolving cyber landscape. Our security-first approach positions cyber resilience as a business enabler, empowering organisations to operate with confidence.

At Integrity360, people come first. We invest heavily in learning, development and progression, fostering a dynamic culture where innovation, collaboration and continuous growth are at the heart of what we do. If you're ready to take your cyber security career to the next level, we’d love to hear from you. 

Job Role / Responsibilities 

This position is responsible for performing all forms of complex technical security assessments of clients’ information technology systems (including the Internet, Intranet, Applications, Hosts, Firewalls, Mobile applications etc.) and related policies and procedures. Communication in both written and verbal forms, including training courses, workshops, consultations with clients and formal reports. These assessments are conducted on a by-project basis, ranging between one and three weeks per project, and will occasionally be done at the client site. This role is also required to conduct ongoing research in the IT security arena and regularly assisting in the sales process. 

Primary Duties/Responsibilities include: 

Perform security reviews of architecture and application designs, as well as application source code reviews 

Perform mobile, complex application, infrastructure, as well as social engineering assessments and penetration testing 

Exploit vulnerabilities to gain access, and expand access to remote systems  

Document technical issues identified during security assessments 

Assist with building, hardening, and maintaining systems used for penetration testing 

Research cutting edge security topics and new attack vectors  

Assist with improvements for Integrity360’s security services, including the continuous enhancement of existing methodology and reporting formats, as well as training collateral 

Communication of findings/innovations internally, to colleagues 

Represent Integrity36 at international events, forums or training events 

Demonstrate the ability to be an industry expert 

Mentor team members 

Desired Skills 

Solid experience in information security 

Industry experience working in Dev/Admin/Engineer field 

Industry experience working in Information security field 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  

Excellent communication skills  

Manual penetration testing experience above and beyond running automated tools 

Experience developing custom scripts or tools used for vulnerability scanning and identification 

In depth networking knowledge (MPLS, BGP, OSPF, IPv6, TOR) 

Understanding of development frameworks 

Broad understanding of hosting /cloud environment 

Broad understanding of SIEM & Defensive Technologies. 

Understanding of Security Auditing tools  

Ethical hacking experience 

Intrusion prevention experience 

Report writing experience 

Presentation skills 

Scripting/coding, sys admin or networking experience 

Understanding of programming methodologies 

Understanding of quality management and project management principles 

Knowledge of advance cloud architecture 

Certifications/Qualifications 

CHECK Team Leader or equivalent  

IT related degree or certificate 

One of the industry leading qualifications (OSCP, CREST, OSCE, OSWP) 

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