Security Engineer

About the role

This hands‑on product security role sits at the core of a fast‑scaling payments infrastructure in Ireland. You will help design, review and continuously improve the security posture of systems that process payments at global scale, working closely with engineering, cloud and infrastructure teams.

Key responsibilities

• Conduct security reviews and threat modeling across product features and system designs, translating findings into clear, actionable recommendations.
• Own end‑to‑end security initiatives from design and planning through implementation and rollout.
• Build and maintain internal security tooling and automation to streamline reviews, detection and remediation workflows.
• Coordinate penetration testing activities and ensure timely tracking and resolution of identified vulnerabilities.
• Support compliance programs such as SOC2 and PCI DSS, including evidence gathering, audit preparation and remediation tracking.
• Contribute to the broader application security roadmap, covering cloud security, supply‑chain security, AI‑related risks and ASPM.
• Engage in proactive security research and incident investigation to continuously improve system resilience.

Required profile

• Proven experience in product or application security, including threat modeling and security reviews in production environments.
• Strong ability to read and write code with a hands‑on mindset for building security tools and automation.
• Solid understanding of risk evaluation and the ability to balance real‑world threats against theoretical vulnerabilities.
• Experience delivering security projects independently while collaborating with senior engineers.
• Excellent communication skills for translating security concepts to non‑security engineering teams.

Required skills

• Threat modeling
• Security reviews and code analysis
• Security tooling and automation development
• Penetration testing coordination
• Compliance frameworks (SOC2, PCI DSS)
• Cloud and distributed system security