Senior AppSec Penetration Tester - Web/Mobile/API (Hybrid)

Methodius Ltd; Ireland; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Hybrid work model

Relocation package

Annual bonus scheme

Private medical insurance

Pension

Job summary

Our client, Methodius Ltd, is seeking an experienced Application Security Penetration Tester to join a growing team in Letterkenny. You will deliver high-quality assessments across a broad portfolio, focusing on manual testing of web, mobile, and APIs with practical remediation guidance.

You’ll work in a collaborative security function that values technical excellence and continuous learning, shaping secure development practices across enterprise platforms.

Qualifications

• 4+ years’ experience in Application Security Penetration Testing.
• Strong hands-on experience with manual testing of web, mobile, and API applications.
• Solid knowledge of OWASP WSTG and common web vulnerabilities.
• Experience assessing and prioritising vulnerabilities using CVSS.
• Excellent report writing and remediation guidance.
• Strong stakeholder management and communication skills.
• Ability to manage multiple engagements with high delivery standards.

Responsibilities

• Perform manual penetration testing of web, mobile (iOS & Android), and REST/SOAP APIs.
• Scope engagements with stakeholders to understand functionality and testing needs.
• Identify, validate, and exploit vulnerabilities using industry methodologies.
• Produce clear reports with risk ratings and remediation recommendations.
• Present findings to technical and non-technical stakeholders and guide remediation.
• Conduct remediation verification and retesting to confirm fixes.
• Collaborate with development, engineering, and security teams to improve secure practices.
• Research emerging threats to enhance testing approaches.
• Contribute ideas to testing methodologies, tooling, and processes.

Skills

App Sec Pen Testing

Manual testing

WSTG

CVSS

Burp Suite

DAST tools

Jira

ServiceNow

Report writing

Stakeholder management

Tools

Burp Suite Pro

DAST Scanners

Jira

ServiceNow

Job description

Our client, Methodius Ltd, is seeking an experienced Application Security Penetration Tester to join a growing team in Letterkenny. You will deliver high-quality assessments across a broad portfolio, focusing on manual testing of web, mobile, and APIs with practical remediation guidance.

You’ll work in a collaborative security function that values technical excellence and continuous learning, shaping secure development practices across enterprise platforms.