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(Ethical Hacker, Security Tester, Offensive Security Analyst, Cybersecurity Consultant)
IT & Data
Salary
€42,000 - €95,000/yr
Level
Professional
Outlook
Growing
Sector
IT & Data
As a Penetration Tester you are paid to think like a hacker, probing organisations' computer systems, networks, and applications to find security weaknesses before malicious actors do. You plan and carry out authorised simulated cyber attacks, document every vulnerability you discover, and write detailed reports explaining the risks and how to fix them. You work closely with IT security teams, software developers, and senior management, helping them understand their exposure and prioritise remediation work. Day to day you might be testing a company's web application, attempting to breach a network perimeter, or running social engineering exercises to assess how staff respond to phishing attempts.
Listen: a day as a Penetration Tester
You arrive at your desk in a Dublin city centre security consultancy at half eight, pour a coffee, and open your email. An Irish financial services client has signed off on the rules of engagement document overnight, which formally authorises you to begin testing their web application starting today. You review the scope carefully — it lists exactly which IP addresses and URLs are in bounds, and you make sure you understand what is off-limits. Working outside that boundary, even accidentally, could have serious legal consequences under the Criminal Damage Act 1991 and related computer misuse legislation, so precision matters before you write a single line of code. By nine o'clock you have opened Burp Suite, a specialised tool for intercepting and manipulating web traffic, and you begin mapping the application — clicking through every page, form, and login screen to understand how it is built. You also run an automated scanner in the background, though you know from experience that automated tools miss a lot. The real skill is manual testing: probing input fields for SQL injection, checking whether session tokens are predictable, and testing whether access controls actually prevent one logged-in user from seeing another's data.
Most Penetration Testers in Ireland enter the field with an NFQ Level 8 Honours Bachelor degree in Cybersecurity, Computer Science, or a related Computing discipline from a university or technological university such as TU Dublin, UCD, DCU, or MTU. Leaving Certificate subjects that strengthen your application include Mathematics, Computer Science, Physics, and Applied Mathematics, though the technical depth of your degree matters more than any single subject combination. Some practitioners move into penetration testing from a general IT background, supplementing their experience with QQI Level 5 or 6 PLC courses in IT before progressing to a degree. Industry certifications are highly valued alongside academic qualifications; the Offensive Security Certified Professional (OSCP), CREST Registered Penetration Tester (CRT), and CompTIA PenTest+ are widely recognised by Irish employers. A Level 9 Masters in Cybersecurity or Information Security can accelerate progression into senior or specialist roles. There is no statutory professional registration body for penetration testers in Ireland, but professional membership with organisations such as ISACA Ireland or the IITC is respected in the sector.
Most Penetration Testers begin as junior or associate testers within a cybersecurity consultancy, a managed security service provider (MSSP), or an in-house security team, building skills across web application, network, and infrastructure testing. With experience and certifications such as OSCP or CREST CRT, you progress to a mid-level tester taking on more complex engagements and mentoring junior colleagues. Senior testers often specialise in areas such as red team operations, cloud security, or mobile application testing, and may move into roles such as Security Architect or Head of Offensive Security. Some experienced practitioners establish their own boutique consultancies or move into advisory roles working with organisations aligned to Ireland's National Cyber Security Centre (NCSC).
AI tools are augmenting penetration testing by automating routine vulnerability scanning, analysing large volumes of network traffic, and suggesting potential attack vectors more rapidly than manual methods alone. This means testers can focus their expertise on complex, creative attack chains and the human judgment required to assess true business risk, areas where automation still falls short. At the same time, AI is being exploited by malicious actors to craft more sophisticated attacks, raising the bar for what testers must simulate and understand. Staying current with AI-driven offensive and defensive techniques is increasingly a professional necessity rather than an optional specialism.
→ Penetration Tester (Current role)
Organisations in Ireland that employ people in this occupation.
Dublin City Centre
Conducts pen tests and red team exercises for global enterprise clients.
Dublin, Cork
Delivers penetration testing and cyber risk assessments for Irish businesses.
Dublin City Centre, Nationwide
Specialist Irish MSSP offering pen testing across networks, apps, and cloud.
Dublin, Cork, Limerick
Runs red team and penetration testing engagements for financial sector clients.
Dublin, Cork
Performs ethical hacking and vulnerability assessments for regulated industries.
Dublin, Nationwide
Provides managed security services including penetration testing to Irish enterprises.
Dublin, Nationwide
Delivers infrastructure and application pen testing for Irish public and private sectors.
Dublin City Centre
IBM X-Force team conducts offensive security testing for enterprise clients globally.
Dublin, Cork, Limerick
Runs advanced adversary simulation and penetration testing for financial clients.
Dublin City Centre
Specialist Irish cybersecurity firm delivering pen testing and CISO advisory services.
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