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Senior Application Security Penetration Tester

Ireland
Relocation
This Job is No Longer Active This position is no longer accepting applications
AI Summary

This role involves conducting manual penetration testing for web, mobile, and API applications within a global financial services organization. You will assess security vulnerabilities, provide remediation guidance, and collaborate with development teams to enhance enterprise security. Ideal candidates have 4+ years of penetration testing experience and strong technical communication skills.

Key Highlights
4+ years of experience in Application Security Penetration Testing
Manual testing of web, mobile (iOS/Android), and API applications
Collaboration with development and security teams to improve secure development practices
Key Responsibilities
Perform manual penetration testing of web applications, mobile applications (iOS & Android), and REST/SOAP APIs
Scope penetration testing engagements by working with stakeholders to understand application functionality and testing requirements
Identify, validate, and exploit application vulnerabilities using recognised industry methodologies
Produce clear, evidence-based penetration testing reports with risk ratings and practical remediation recommendations
Present findings to technical and non-technical stakeholders and provide guidance throughout the remediation process
Conduct remediation verification and retesting to confirm vulnerabilities have been successfully resolved
Collaborate with development, engineering, and security teams to improve secure development practices
Research emerging application security threats, vulnerabilities, and attack techniques to continuously enhance testing approaches
Contribute ideas and improvements to penetration testing methodologies, tooling, and processes

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Technical Skills Required
Penetration Testing OWASP Web Security Testing Guide Burp Suite Professional
Benefits & Perks
Annual Bonus Scheme
Contributory Pension
Private Medical Insurance
Life Assurance & Long-Term Disability
Employee Assistance Programme
22 days annual leave + 10 public holidays
Relocation package
Continuous Learning & Development
Access to extensive training & certification resources
Lunch & Learn sessions
Company discounts
On-site parking
Bike-to-work scheme

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Nice to Have
Mobile application penetration testing across iOS and Android
Professional certifications such as OSCP, Burp Suite Certified Practitioner (BSCP), or HTB CPTS
Experience testing AI-enabled applications, including chatbots and LLM-based solutions
Network or infrastructure penetration testing experience
Software development or secure coding experience
Experience working within financial services or another highly regulated industry

Job Description

Our client, a leading global financial services organisation, is looking for an experienced Application Security Penetration Tester to join a growing Application Security team based in Letterkenny. This is an excellent opportunity to work on large-scale, business-critical applications while partnering with development teams to improve the security posture of enterprise platforms.

This role is ideal for a penetration tester with strong experience in manual web, mobile and API security testing who enjoys working closely with technical stakeholders and providing practical remediation guidance.

About the Opportunity

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Job Overview
Posted Aug 28, 2026
Employment Full-time
Experience Mid-Senior level
Location Ireland
Category Cyber Security
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