Senior Incident Responder: Threat Hunting & IR Lead

Fidelity; Galway; On-site; EUR 120,000 - 180,000; Full time

Job summary

Fidelity is seeking a Senior Incident Responder for its Security Operations Center. You will investigate and contain threats across our global environment, contributing to containment, eradication, and improvements in detection and response capability.

You will work end-to-end on investigations, coordinate with cross-functional teams, and help shape strategy, playbooks, and automation initiatives to strengthen defenses and incident handling at Fidelity.

Qualifications

• Established cybersecurity background and threat landscape knowledge.

Responsibilities

• Respond to security incidents from detection through containment, eradication, and recovery.
• Collaborate with infrastructure, application, legal, and business teams on escalated/high-severity events.
• Conduct network, host, cloud, and identity-based forensic analysis to scope compromise and indicators.
• Perform malware triage and analysis to determine capability, persistence, and impact.
• Produce clear incident documentation, timelines, and post-incident reports for technical and executive audiences.
• Develop and refine threat detection content informed by attacker TTPs (MITRE ATT&CK).
• Participate in threat hunting initiatives to uncover visibility gaps.
• Support alert triage during surge periods and share techniques with junior analysts.
• Contribute to SOC leadership strategy, roadmap planning, and capability development.
• Help build and exercise incident response playbooks, tabletop scenarios, and escalation paths.
• Identify opportunities to apply automation and AI/LLM technologies to investigations.
• Champion continuous improvement across tools, processes, and team capabilities.

Skills

Information security

Incident response

Digital forensics

SIEM

SOAR

EDR tooling

Windows forensics

Linux forensics

Python scripting

Cloud security

Tools

SIEM

SOAR

EDR

Windows

Linux

Python

Azure

AWS

Job description

Fidelity is seeking a Senior Incident Responder for its Security Operations Center. You will investigate and contain threats across our global environment, contributing to containment, eradication, and improvements in detection and response capability.

You will work end-to-end on investigations, coordinate with cross-functional teams, and help shape strategy, playbooks, and automation initiatives to strengthen defenses and incident handling at Fidelity.