senior siem engineer

We have an open vacancy for a Senior SIEM Engineer who will be responsible for designing, deploying, monitoring and optimizing QRadar SIEM, ensuring smooth operation, advanced log source integration and system performance tuning. 

📌 Location: Athens (North Suburbs)

📍 Working Model: Hybrid

Main Responsibilities  

Advanced Log Source Onboarding & Integration

• Lead the onboarding of specialized log sources and new technologies into the QRadar SIEM.
• Define and implement best practices for log source deployment, ensuring optimal data ingestion and parsing.
• Configure, fine-tune, and validate log sources for maximum visibility and correlation.

SIEM Architecture, Performance Optimization and monitoring

• Optimize QRadar’s performance through effective resource allocation and, in cooperation with Detection Engineering team, perform rule tuning and refinement.
• Ensure log source consistency, retention policies, and indexing efficiency for improved system performance.
• Conduct periodic security audits and assess log integrity for compliance adherence.
• Define and enforce backup strategy for all SIEM components.
• Leverage SNMP, Syslog, and other logging protocols for comprehensive monitoring of the SIEM’s components.

Deployment & Administration

• Lead the deployment, configuration, and maintenance of QRadar SIEM application.
• Oversee daily administration tasks, ensuring the SIEM remains operational, up-to-date, and secure.
• Implement best practices for log management and data normalization in cooperation with Detection Engineering team.

Collaboration & Knowledge Sharing

• Provide mentorship and training to junior engineers on QRadar functionalities.
• Stay updated on emerging threats, vulnerabilities, and SIEM advancements, driving continuous improvement initiatives.

Professional Experience & Qualifications

• At least 2-3 years prior experience as a QRadar SIEM Engineer
• Prior experience as a Security Analyst L2/L3 or Security Engineer is desirable
• Strong knowledge of networking and security (TCP/IP, firewalls, VPNs, etc.)
• Knowledge of Operating Systems (Windows, Unix)
• Strong Knowledge of IBM Qradar SIEM
• Bachelor's or master's degree in Computer Science, Information Security, or a related field (or equivalent work experience).
• Certification for QRadar SIEM (Administrator)
• Administration and maintenance of QRadar SIEM application.
• Experience with scripting languages, such as Python, PowerShell, or Bash
• Proficiency in ticketing systems (e.g., ServiceNow, Jira) and incident management processes.

What you will gain:

🏋️‍️Friendly and dynamic working environment

🏫 Formal training and Professional Qualifications fully funded

✔️ Competitive compensation package

⚕️ Private Health Insurance

⚖️Work-Life Balance initiatives

🏃🏽‍Corporate Sports Teams (e.g. Running, Basketball, Volleyball)

👥 A Buddy who will support you with your onboarding