SIEM and Security Architecture Engineer

Castillians

SIEM & Security Architecture Engineer responsible for designing and optimizing IBM QRadar for cybersecurity. Leading integration and migration efforts within a global engineering network.

Posted 7/13/2026contractRemote • 🇮🇪 IrelandMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and implementing IBM QRadar SIEM architectures, ensuring high availability and compliance with security standards. Proficient in log management, correlation rule development, and collaboration with cybersecurity teams to enhance incident detection capabilities.

Highest-signal resume keywords

IBM QRadar SIEM AdministrationSIEM Architecture DesignLog Collection and NormalizationCorrelation Rule DevelopmentCybersecurity Principles

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Applicant Tracking System Keywords

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Hard Skills

IBM QRadar SIEMHigh-Availability DesignPlatform SizingLog ParsingEvent ManagementMITRE ATT&CK FrameworkLDAP IntegrationMulti-Factor Authentication (MFA)Role-Based Access Control (RBAC)SIEM Migration

Soft Skills

Analytical SkillsTroubleshooting SkillsProblem-Solving SkillsCommunication SkillsCollaboration Skills

Industry Keywords

Information SecurityNetwork SecuritySecurity MonitoringCompliance StandardsOperational Procedures

Tech Stack

Tools & technologies

CloudCyber Security

About the role

Key responsibilities & impact

Be part of our Global Engineering Network!
Design and implement a high-availability IBM QRadar SIEM architecture to ensure resilience, scalability, and business continuity.
Perform platform sizing and capacity planning based on log volume, EPS/FPS requirements, retention policies, and future growth.
Lead the deployment, configuration, and optimization of the IBM QRadar platform.
Plan and execute the migration from the existing SIEM solution to IBM QRadar with minimal service disruption.
Integrate, collect, parse, and normalize logs from diverse security devices, network infrastructure, servers, applications, cloud services, and endpoint solutions.
Develop, tune, and maintain correlation rules, use cases, offenses, and detection content aligned with the MITRE ATT&CK framework.
Optimize SIEM performance by reducing false positives and improving detection accuracy.
Configure and manage access security, including Multi-Factor Authentication (MFA), LDAP / Active Directory integration, Role-Based Access Control (RBAC).
Ensure compliance with security standards and organizational policies.
Produce technical documentation, architecture diagrams, deployment guides, and operational procedures.
Collaborate with SOC analysts, infrastructure teams, and cybersecurity stakeholders to continuously improve monitoring and incident detection capabilities.
Provide technical support, troubleshooting, and knowledge transfer to operational teams.

Requirements

What you’ll need

Bachelor's degree in Computer Science, Information Security, Engineering, or a related field.
Proven experience designing, deploying, and administering IBM QRadar SIEM in enterprise environments.
Strong expertise in SIEM architecture, high-availability design, and platform sizing.
Hands-on experience with SIEM migration projects.
Solid knowledge of log collection, parsing, normalization, and event management.
Experience developing and tuning correlation rules and detection use cases aligned with the MITRE ATT&CK framework.
Experience integrating QRadar with LDAP/Active Directory, MFA, and Role-Based Access Control (RBAC).
Strong understanding of cybersecurity principles, network security, and security monitoring.
Excellent analytical, troubleshooting, and problem-solving skills.
Strong communication skills and the ability to collaborate with technical and business stakeholders.

Benefits

Comp & perks

Clear scope with no ambiguity over deliverables.
Opportunity for repeat engagements based on performance.