Senior SIEM Operations Engineer

2 semanas atrás

Porto, Porto, Portugal JUST VARGAS Tempo inteiro

Just Vargas
is a human resources consultancy that recruits, trains, and supports talent, helping both companies and professionals reach their full potential.

We are recruiting for a leading company in the financial sector. We are looking for a
Senior SIEM Operations Engineer
who will ensure the stability, performance, and continuous improvement of the organizations SIEM environment and its supporting infrastructure. This person will play a critical role in maintaining security visibility across the organization by managing log sources, optimizing system performance, and supporting incident response capabilities.

Key Responsibilities

  • Operate and maintain the on-premises SIEM platform, including system updates, configuration changes, and coordination of hardware services (remote only);

  • Perform regular patching and vulnerability mitigation for SIEM infrastructure and auxiliary systems;

  • Monitor and maintain backup systems and update detection rules to ensure operational continuity;

  • Support and maintain auxiliary systems such as Git servers, rsyslog servers, and other Linux-based services;

  • Participate in on-call rotations to ensure 24/7 operational support;

  • Manage approximately 23,000 log sources, ensuring they are active, correctly transmitting data, and properly parsed within the SIEM;

  • Add new log sources and decommission inactive ones to maintain data accuracy and consistency;

  • Verify data parsing and normalization across all sources;

  • Perform capacity planning and lifecycle management of all SIEM components;

  • Analyse, optimize, and develop scripts in Python or Bash to automate and enhance daily operations;

  • Maintain and improve logging protocol standards by defining what should be logged, testing, and implementing updated standards across the environment;

  • Coordinate daily operational activities within the SIEM team to ensure smooth execution of tasks and alignment with service expectations;

  • Act as a technical escalation point and mentor for junior and mid-level engineers, ensuring effective knowledge transfer and professional growth.

Requirements

  • Proven professional experience with SIEM platform administration and log source management (e.g., IBM QRadar, Splunk, or Elastic);

  • Proficiency in Linux system administration and scripting (Python, Bash);

  • Experience with automation tools and CI/CD pipelines;

  • Experience with Git and centralized logging systems such as rsyslog;

  • Comfortable working in high-availability and security-focused environments;

  • Strong analytical and problem-solving mindset;

  • Excellent communication skills and a proactive, team-oriented attitude;

ITIL Certification or equivalent qualification (foundational knowledge in IT service management);

  • Certification in at least one SIEM solution platform (e.g., IBM QRadar, Splunk, Elastic);

  • Linux Professional Certification Level 2 or Red Hat Certified Engineer (RHCE);

  • Cisco Certified Network Associate (CCNA) or equivalent networking certification;

  • Experience with SIEM tuning, rule optimization, and exposure to cloud-based or hybrid environments (
    considered a plus)
    ;

  • Knowledge of security frameworks and compliance standards (ISO 27001, NIST);

  • Experience with IT Service Continuity Management (ITSCM) testing, Agile methodologies (Scrum, Kanban), and tools such as Jira and Confluence (
    considered a plus)
    ;

  • Knowledge of performance tuning and integration techniques (
    considered a plus)
    ;

  • Bachelors or Masters degree in IT, Business, or a related field;

  • Proficiency in English, both written and verbal.

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