Sr Incident Responder

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 exfiltration • Conduct forensic analysis on endpoints, servers, and network traffic using EDR and log analysis tools • Work closely with SOC analysts and Threat Hunters to validate, triage, and contain threats • Develop and refine incident response playbooks, escalation processes, and threat detection rules • Coordinate response efforts across internal teams and third-party stakeholders • Deliver post-incident reports including root cause, lessons learned, and remediation recommendations • Contribute to red/purple teaming efforts and tabletop exercises • Provide 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 forensics • Strong 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 reports • Strong understanding of regulatory/compliance-driven environments (PCI, HIPAA, SOX, etc.) GCS is acting as an Employment Business in relation to this vacancy. Apply tot his job