Top Cyber Security Jobs in Dublin

Lead architecture and design of a cloud-native, high-volume dispute platform. Provide technical authority, drive engineering excellence, embed PDLC discipline, apply AI/automation to engineering workflows, partner across teams, and mentor engineers to deliver reliable, secure systems at scale.

Lead architecture and deliver cloud-native workplace solutions, engage stakeholders, define target-state architectures, integrate enterprise AI safely, produce and review secure production code, drive resiliency and automation, and evaluate vendor technologies.

Lead a small senior team designing, building, and operating enterprise-scale infrastructure platforms. Own architecture through production, write and review production code, run on-call rotations, establish AI-native engineering practices, ensure security and reliability, decompose ambiguous problems, measure outcomes, and collaborate with stakeholders to drive scalable, cost-effective infrastructure solutions.

Design, build, and operate enterprise-scale infrastructure platforms; write and review production code; own reliability, performance, security, and cost; run on-call rotations and respond to incidents; use AI-native engineering practices to accelerate development and automation; collaborate on technical decisions and decompose ambiguous problems into production-ready systems.

Own and evolve Mastercard's Data & AI platform and products: define roadmaps, treat data as a product, lead cross-functional teams, ensure governance and compliance, operationalize agentic AI and HITL workflows, translate regional requirements, and deliver scalable, high-quality data products.

The Security Automation Engineer designs and implements automation frameworks for security operations, focusing on compliance and scalable security controls for Managed Services platforms.

The Lead Engineer will develop and operate security services in Rust, ensuring database security and performance while collaborating across teams to enhance MongoDB's security capabilities.

Senior leader responsible for building and governing enterprise risk intelligence: establish analytic standards, lifecycle processes, QA, governance, and 24/7 coverage. Produce scalable threat assessments, long-term forecasts, situational awareness, and executive briefings while integrating with protective intelligence, crisis management, and security operations.

Join the Server Ingress Security team to design and implement security services in Rust, ensuring the security and performance of MongoDB’s ingress networking.

Design and implement scalable threat detection, investigation, and automated response capabilities for Datadog Cloud SIEM. Research attacker techniques, build high-fidelity detection content across cloud, identity, endpoints, and networks, and improve AI-assisted SOC workflows. Own detection lifecycle from research to deployment, collaborate with Product and Engineering, mentor engineers, and contribute to security research and open-source initiatives.

Join Notion's Detection and Response team as a Security Operations Engineer, focusing on investigating security events and mentoring junior engineers, ensuring operational excellence in security practices.

The role involves researching cybersecurity threats, vulnerability analysis, developing automated tools, and collaborating with teams to provide technical expertise and publish findings.

Serve as the primary security contact for internal and external stakeholders: triage, investigate, and resolve platform security incidents, communicate with customers, improve security processes, create documentation and training, develop AI automation solutions, and participate in on-call rotations across time zones.

Lead investigations and incident response using SIEM and SOAR, design detection alerts, perform threat hunting across endpoints, network, application and logs, analyze compromises and malware, build playbooks and security tools, share findings to improve product/security posture, and mentor junior team members.

Serve as a senior network security domain authority to define network engineer personas and workflows, advise product and AI teams, validate agent behaviors across firewall, cloud/SASE, policy management, compliance, vulnerability management, and troubleshooting, and help build realistic enterprise test scenarios.

Lead design and development of low-level Linux instrumentation and eBPF-based runtime security features for detection, monitoring, and workload protection. Drive architecture, implement performance-sensitive systems, establish testing methodologies, deliver end-to-end features, and provide technical leadership and cross-team collaboration across Datadog's security products.

The role involves enhancing MongoDB’s database security through ownership of security initiatives, promoting best practices, and collaborating with engineering teams on security architecture. Responsibilities include threat modeling, conducting security assessments, and educating the organization on security matters.

Design, build, operate, and support resilient distributed platform services. Write maintainable code, troubleshoot production issues, improve reliability and observability, and assist internal teams. Participate in on-call rotations and collaborate on platform evolution.

Lead security architecture and strategy for Mastercard's blockchain payment platforms. Drive threat modeling, risk assessments, Secure-SDLC adoption, and embed security into CI/CD, APIs, cloud and blockchain components. Advise engineering and product teams, mentor security staff, collaborate with compliance and auditors, and shape regulatory and platform-level security requirements.

Lead security architecture and strategy for Mastercard's blockchain platforms. Drive threat modeling, risk assessments, Secure-SDLC adoption, embedding security in CI/CD, APIs, and cloud services. Partner with engineering, product, and compliance teams to implement controls, meet regulatory standards, mentor engineers, and represent Corporate Security in cross-functional initiatives.

Lead security architecture and strategy for Mastercard's blockchain platforms. Drive threat modeling, risk assessments, and Secure-SDLC practices. Embed security into CI/CD, APIs, cloud and blockchain components. Advise stakeholders, mentor engineers, and ensure compliance with frameworks like SOC 2, PCI DSS and DORA while balancing security and business needs.

Lead security architecture and strategy for Mastercard's blockchain payment platforms. Drive threat modeling, risk assessments, and security-by-design across CI/CD, APIs, cloud, and blockchain components. Influence engineering and product teams, embed controls into Secure-SDLC, ensure regulatory compliance (SOC2, PCI DSS, DORA, CRI), mentor security staff, and partner with stakeholders on remediation and governance.

Lead security architecture and strategy for Mastercard's blockchain payment platforms. Drive threat modeling, risk assessments, and secure design reviews. Embed security into CI/CD, APIs, cloud, and blockchain components. Guide compliance (PCI DSS, SOC 2, DORA, CRI), mentor engineers, influence product and business leaders, and represent Corporate Security across cross-functional and regulatory initiatives.

Lead security architecture and strategy for Mastercard's blockchain payments platforms. Drive threat modeling, risk assessments, and security design reviews; embed security into CI/CD, APIs, cloud services, and blockchain components. Influence cross-functional teams, mentor engineers, and ensure compliance with frameworks like SOC 2 and PCI DSS. Represent Corporate Security in regulatory and product discussions.

Lead security architecture and strategy for Mastercard's blockchain payment platforms. Drive threat modeling, risk assessments, secure-by-design practices, and embed security into CI/CD, APIs, cloud and blockchain components. Advise and mentor engineering teams, liaise with product and regulatory stakeholders, and ensure compliance with SOC 2, PCI DSS, DORA and industry frameworks.