Job Overview
As a Junior Penetration Tester, you will support the security team in identifying and validating vulnerabilities across web applications, mobile applications, APIs, and infrastructure components. You will work under the guidance of senior testers, strengthening the organisation's security posture through hands‑on security testing, analysis, and reporting.
In This Role, You Will
Perform supervised penetration testing of web, mobile, and API applications
Assist with network and infrastructure scanning using standard security tools
Retest vulnerabilities to confirm successful remediation
Provide basic remediation guidance to engineering teams
Participate in ad‑hoc threat modelling and security discussions
Assist in assessing impact and likelihood of identified findings
Log, track, and follow up on vulnerabilities using internal systems
Work with product and application teams on remediation progress
Support preparation of vulnerability summaries and status reports
Help tune scanning configurations and reduce false positives
Maintain working knowledge of application and infrastructure testing tools
What will make you stand out?
The ideal candidate will have a solid understanding of core web technologies, including HTTP, APIs, authentication, and session management, along with knowledge of the OWASP Top 10 and common application vulnerabilities. Experience with penetration testing tools such as Burp Suite, Nmap, and Kali Linux, familiar with SAST, DAST, and SCA tooling, and basic scripting ability in Python, PowerShell, or Bash is important. Awareness of cloud security concepts across AWS, Azure, or GCP is beneficial. Strong analytical and problem‑solving skills, clear communication, collaboration, and attention to detail are essential.
Preferred Experience
CompTIA Security+
eLearnSecurity eJPT / eWPT
Essential Qualifications
Related qualification in cybersecurity or computer science
Location
This is a hybrid role based primarily at Baggot Plaza or Cabinteely, Dublin. Colleagues are expected to spend a minimum of 8 days per month working in‑person.
EEO Statement
We welcome applications from people of all backgrounds, lived experience, abilities and perspectives. We provide reasonable accommodations at every stage of our recruitment process for disabilities, neurodivergence or medical conditions.
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