Senior IT Security Engineer, Lemfi

• You are impact-oriented, focused on protecting customer data, strengthening regulatory trust, and delivering measurable improvements such as fewer incidents and faster detection
• You collaborate naturally with Engineering, Cloud, Risk, and Compliance, communicating clearly and working effectively in a distributed team
• You take ownership of our security posture—from infrastructure hardening to audit readiness—acting proactively, responding quickly, and continuously improving
• You’re always looking for ways to automate, streamline reporting, and enhance visibility, understanding that strong security is built on iteration and transparency
• 5+ years in Security Engineering, Cloud Security, or Infrastructure Security roles within AWS environments
• Deep understanding of AWS security services (IAM, KMS, CloudHSM, Security Hub, CloudTrail, etc.)
• Hands-on experience with SIEM platforms and cloud/endpoint telemetry integration
• Strong knowledge of vulnerability management, incident response, and security monitoring
• Familiarity with financial-sector compliance frameworks (DORA, PCI DSS, ISO 27001, NIST CSF)
• Experience preparing security reports and technical evidence for regulators or auditors (e.g., CBI, PCI QSA)
• Practical experience with Infrastructure-as-Code (Terraform) and CI/CD security integration
• Competence in scripting and automation (Python, Bash, or similar) to improve detection, response, and reporting
• Strong ownership and accountability; able to work independently and collaborate across Security, Engineering, and Compliance
• Excellent communication skills, able to explain complex security topics to non-technical stakeholders and regulators
• Analytical, structured problem-solver focused on continuous improvement and operational resilience
• Pragmatic approach balancing security rigor with business agility and delivery speed

Desirable

• Join a fast-growing, multinational fintech start-up where security, resilience, and trust are central to everything we build
• Our Security Engineering team ensures that our infrastructure, processes, and controls meet the highest standards, from AWS configuration to compliance with DORA, SOC 2, PCI DSS, and ISO 27001
• We’re seeking a Senior Security Engineer to strengthen our cloud security posture, improve visibility through SIEM and automation, and maintain compliance with evolving EU and Irish regulations
• In this hands-on role, you will work across AWS, tooling, and governance to translate regulatory requirements into practical, measurable security improvements
• Manage and enhance AWS security, including IAM, network segmentation, key management, and logging
• Configure and maintain SIEM, vulnerability scanners, IDS/IPS, and endpoint protection
• Build monitoring and alerting for critical systems and embed security into CI/CD workflows
• Harden infrastructure and ensure compliance with ISO 27001, PCI DSS, and DORA
• Prepare regulatory reports, coordinate audit evidence, and support inspections
• Translate regulatory requirements into actionable controls and maintain security documentation
• Operate and tune SIEM to detect suspicious activity; lead incident triage and post-incident reviews
• Maintain incident, vulnerability, and threat intelligence playbooks; improve first-line detection through training
• Align security strategy with Risk, Compliance, and IT; provide metrics for executive reporting
• Coordinate cross-entity policies and advise on third-party/vendor compliance with DORA and PCI DSS