Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Vulnerability Analyst

Overview
Mastercard is seeking a Senior Vulnerability Analyst to manage the Bug Bounty Program and perform advanced application security testing across web, mobile, and API environments. This role is responsible for validating externally reported vulnerabilities, conducting penetration testing, partnering with engineering teams on remediation, and helping strengthen Mastercard's security posture through proactive security assessments and vulnerability management.

Role
• Manage the Bug Bounty Program, including vulnerability intake, validation, triage, and researcher engagement.
• Conduct penetration testing of web, mobile, and API-based applications.
• Assess risk, prioritize findings, and provide remediation guidance.
• Partner with product and engineering teams to drive timely remediation and validate fixes.




• Develop reporting and metrics to measure program effectiveness and communicate risk.

All About You
• At least 3 years of experience in application security and penetration testing
• Strong knowledge of web, mobile, and API security, including OWASP Top 10 risks.
• Hands-on experience with tools such as Burp Suite, OWASP ZAP, or similar testing platforms.
• Ability to assess vulnerabilities, communicate risk, and provide actionable remediation guidance.
• Solid stakeholder management, analytical, and problem-solving skills.
• Experience with bug bounty or vulnerability disclosure programs and relevant security certifications is a plus.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

- Abide by Mastercard’s security policies and practices;

- Ensure the confidentiality and integrity of the information being accessed;

- Report any suspected information security violation or breach, and

- Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

📌 Senior Vulnerability Analyst (Dublin)
🏢 Mastercard
📍 Dublin