Penetration Tester

About Us

Integrity360 is a leading independent cybersecurity and PCI specialist operating across Europe, Africa, the Caribbean, and North America. The company has office locations in Ireland, the UK, Bulgaria, Italy, Sweden, Spain, Lithuania, Ukraine, Africa, the Caribbean, and Canada, supported by six Security Operations Centres (SOCs) located in Dublin, Sofia, Madrid, Stockholm, Rome, and Cape Town.

With over 780 employees, including more than 585 dedicated cybersecurity professionals, Integrity360 delivers a full suite of professional, support, and managed security services. These span the complete cyber risk lifecycle, from identification and prevention to detection, response, and recovery. Integrity360 supports over 3000 mid-market and enterprise organisations across sectors including financial services, insurance, government, healthcare, retail, telecommunications, and utilities.

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. 

Role Overview

As a Penetration Tester, you will perform hands-on technical security testing across a range of environments and technologies, working on complex and high-value projects. You will be expected to perform advanced manual testing (not just automated scans), exploit vulnerabilities, and deliver clear, actionable reports to clients.

This role is ideal for someone who already has solid penetration testing experience and wants to take their technical skills to the next level, while also contributing to research and innovation within the team.

What You Already Bring

• 2+ year of practical penetration testing experience (in labs, personal projects, or professionally)
• Strong understanding of core security concepts (e.g., OWASP Top 10, CVSS, MITRE ATT&CK)
• Solid grasp of networking fundamentals, ports/protocols, basic Windows/Linux internals
• Experience with common tools: Nmap, Burp Suite, Gobuster, Metasploit, BloodHound, etc.
• Manual testing exposure — not just automated scans
• Basic scripting or coding (e.g., Python, Bash, PowerShell)
• Good communication and documentation skills

Nice to Have (But Not Required)

• Practical experience in one or more of:
• Active Directory attacks
• Cloud (AWS/Azure) testing basics
• Social engineering
• Source code review
• Certifications such as OSCP or similar
• Contributions to CTFs, Hack The Box, or bug bounty programs

What We Offer

• A clear career path from Associate → Mid-Level → Senior → Red Team
• Support for certifications, lab access, and personal development
• Internal mentoring and hands-on training
• Exposure to real client projects and cutting-edge engagements
• A high-performing, international team where you can grow fast

Key Responsibilities

• Conduct penetration tests and technical security assessments on:
  • Web applications and APIs
  • Mobile applications
  • Network infrastructure (internal and external)
  • Cloud and hybrid environments
  • Social engineering scenarios (as needed)
  • Consultancy
  • Other offensive security services
• Review system architecture and application designs for security weaknesses.
• Exploit and escalate vulnerabilities to demonstrate real-world risk.
• Document technical findings and produce high-quality reports with remediation guidance.
• Stay current with the latest attack techniques, vulnerabilities, and tools.
• Participate in internal knowledge sharing, tool development, and security research.
• Support sales activities with technical insights when needed (e.g., scoping calls, workshops).
• Represent Integrity360 in client engagements, technical discussions, or industry forums.

Required Skills / Experience

• Hands-on experience as a penetration tester, with a proven track record of delivering quality security assessments.
• Industry experience working in Dev/Admin/Engineer field
• Industry experience working in the 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
• 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 
• Networking knowledge (ports, protocols, firewalls, routing, VPN)
• Understanding of Security Auditing tools
• Ethical hacking experience
• Report writing experience
• Presentation skills
• Scripting/coding, sys admin or networking experience
• Understanding of programming methodologies in one or more programming or scripting languages: Java, Python, C/C++, C#, .NET, ASP, PHP, etc.

Personal Specification

• Urgent desire to learn with a passion for technology
• Motivated by being at the forefront of technology, and pushing technology boundaries
• Motivated by the thrill of being able to “break” systems
• Willingness to work late when required
• Willingness to travel when required, possibly abroad
• Analytical and critical thinker
• Good written English skills

• Problem-solving skills
• Efficient
• Analytical
• Persistence
• Attention to detail

Certifications/Qualifications

• One of the industry-leading qualifications (OSCP, CyberScheme, CREST, OSCE, OSWP)
• A degree in Computer Science, Cybersecurity, or related field is preferred, but practical experience and demonstrable skill are highly valued.

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