CSIRT Incident Responder (Poznań - hybrid)

Key Responsibilities

Incident Response, Threat Hunting & Escalation

• Protect enterprise systems and information by promptly responding to security threats and incidents, individually and as part of a team.
• Receive major incident escalations from SOC detection operations and support response and reporting.
• Proactively hunt for threats and support containment, eradication, and recovery efforts.
• Analyze security incidents to identify rootcause, determine impact, and improve incident handling procedures.
• Act as a subject matter expert, providing insight and guidance to technical teams on prevention, detection, and response.
• Research current methods, tools, and trends in incident response, threat hunting, and digital forensics.

CSIRT Incident Intake & Validation

• Monitor designated CSIRT trigger channels for qualified potential incidents escalated by the SOC.
• Validate severity, business impact, affected assets, impacted users, attack scope, and urgency.
• Ensure incidents are responded to, recorded, tracked, and updated in line with the IR Runbook.

Major Incident Handling

• Determine whether major incident criteria are met and launch the Major Incident Management (MIM) bridge or call per the Communication Plan.
• Initiate communications, maintain the incident timeline and summary, and brief stakeholders on MIM calls.
• Establish and maintain the agreed update cadence throughout the incident.
• Act as the incident response orchestrator during active security incidents.
• Proactively coordinate with relevant departments — management, legal, security, operations, infrastructure, privacy, communications, and business stakeholders.
• Mobilize incident responders across SOC, platform engineering, endpoint security, IAM, network security, email security, infrastructure, vulnerability management, and IT teams.
• Assign containment, investigation, eradication, recovery, and evidence preservation actions to the correct teams.
• Track execution of the incident response playbook.
• Oversee short-term containment actions per approved IR playbooks, and initiate approval for long-term containment where required.
• Coordinate with InfoSec and business leads on business context, asset criticality, containment approval, and BCP/DR triggers.
• Guide evidence preservation for forensic purposes in line with the IR Runbook and defined storage locations.
• Produce thorough incident reports and documentation, presenting findings to the team and leadership on a routine basis.
• Identify and manage lessons learned and corrective action plans.

Other Activities

• Identify and help mitigate vulnerabilities and potential attack paths across the organization.
• Recommend SIEM detection enhancements, alert tuning, and response playbook improvements to engineering teams.
• Support deep-dive log analysis where root cause, attack path, or impact is unclear.
• Support the SOC team as needed.
• Conduct threat hunting activities across cross-platform security tooling.

Shift & Operational Requirements

• Operate within 24x7 security operations and incident response environment.
• Participate in major incident bridges, MIM calls, and technical response calls.
• Communicate clearly with technical teams, business teams, management stakeholders, and legal/privacy and communications teams.
• Follow structured incident response, evidence handling, reporting, and documentation practices.