Senior Penetration Tester Location: Dublin Type: Full-Time Salary: €90,000 - €110,000 A large, mature security function is expanding its offensive security team and adding a senior penetration tester to lead application and platform assessments across a wide technology estate. The team focuses on proactive testing, modelling attacker behaviour, and helping engineering groups remediate weaknesses in a practical, collaborative way. It's a high-visibility role with exposure to a broad mix of web, mobile, API and internal applications in a complex enterprise environment. The Role You'll lead penetration testing engagements, end-to-end scoping, manual testing, reporting and presenting results to engineering and product teams. Primary Responsibilities Conduct manual application, API and mobile penetration tests Model attacker behaviour and replicate real-world techniques Analyse findings, build exploit proofs and document results clearly Present outputs to engineering and security stakeholders Provide guidance on remediation and secure design Contribute to tooling improvements and internal research efforts Collaborate with wider security teams to strengthen overall controls Stay current with emerging attack patterns, frameworks and vulnerabilities Skills & Experience 5+ years in penetration testing / ethical hacking roles Strong manual testing capability across OWASP Top 10 categories Experience with common security tools (Burp Suite, Kali, nmap, Wireshark, etc.) Good understanding of authentication, authorisation and application security mechanics Ability to write or script in at least one language (Python, JavaScript, Java, etc.) Familiarity with web technologies (REST, JSON, SOAP) and modern frameworks Strong reporting, communication and presentation skills Relevant certifications (OSCP, GWAPT, GPEN, etc.) are advantageous Reperio Human Capital acts as an Employment Agency and an Employment Business. Skills: Penetration-testing Application security Offensive-tooling Vulnerability-analysis Threat-modelling Benefits: Work From Home