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Sr Incident Responder

Job Type: Full-time, Contract
Contract Duration: 6 Months (Renewable)
Location: Remote (US-based)
Industry: Telecommunications
Start Date: ASAP

Job Summary:

We're working with a global enterprise seeking a Senior Incident Responder to join their Cyber Incident Response Team (CIRT). This role plays a critical part in responding to and containing security incidents, performing deep technical analysis, and strengthening incident response capabilities across the business.

You'll be joining a mature, well-resourced cyber function, collaborating with Threat Intel, SOC, and Engineering teams to detect, analyze, and respond to advanced threats in real time.

Key Responsibilities:

Lead investigations of complex cyber incidents involving malware, phishing, lateral movement, and potential data exfiltrationConduct forensic analysis on endpoints, servers, and network traffic using EDR and log analysis toolsWork closely with SOC analysts and Threat Hunters to validate, triage, and contain threatsDevelop and refine incident response playbooks, escalation processes, and threat detection rulesCoordinate response efforts across internal teams and third-party stakeholdersDeliver post-incident reports including root cause, lessons learned, and remediation recommendationsContribute to red/purple teaming efforts and tabletop exercisesProvide mentoring and technical guidance to junior team members

What We're Looking For

5-8+ years in cybersecurity with significant experience in incident response and digital forensicsStrong knowledge of Windows/Linux systems, network protocols, and attack techniques (MITRE ATT&CK)Experience using tools such as CrowdStrike, EnCase, Splunk, Wireshark, Volatility Velociraptor, etc.Familiarity with scripting or automation (Python, PowerShell, or Bash)Excellent written and verbal communication - ability to produce high-quality incident reportsStrong understanding of regulatory/compliance-driven environments (PCI, HIPAA, SOX, etc.)

GCS is acting as an Employment Business in relation to this vacancy.

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