Cyber Security Senior Analyst - Rakuten-CERT Section, Cyber Security Defense Department (CSDD)
Core
Lead cybersecurity incident response, digital forensics, and threat detection for Rakuten Group's global internet services.
Role type
Senior Incident Response Analyst (Cyber Security)
Builds
Incident response playbooks, forensic evidence, threat intelligence reports, and security control improvements.
Domain
Cyber Security / Incident Response / Digital Forensics
Required skills
Incident response lifecycle management, digital forensics (memory/disk/network), log analysis (SIEM, syslog, Windows Events), malware analysis, threat hunting, scripting (Python, PowerShell, Bash), root cause analysis, stakeholder communication
Preferred skills
Cloud security incident response (AWS, Azure, GCP), MITRE ATT&CK framework application, advanced forensic tools (EnCase, FTK, Volatility), malware sandboxing (Cuckoo, VirusTotal), SOC escalation handling
Technologies
SIEM, EDR, IDS/IPS, firewalls, vulnerability scanners, Python, PowerShell, Bash, EnCase, FTK, Volatility, Cuckoo Sandbox, VirusTotal, AWS, Azure, Google Cloud (via careerplan.io/jobs/1038523-161-cyber-security-senior-analyst-rakuten-cert-section-cyber-security-defense-department-csdd)
Responsibilities
Lead and coordinate cybersecurity incident response (detection, containment, eradication, recovery); Analyze logs from firewalls, SIEM, IDS/IPS, and endpoint tools to identify threats; Perform digital forensic investigations on compromised systems; Analyze malicious files and scripts to identify IOCs; Prepare detailed incident reports with root cause analysis and recommendations; Proactively identify security control improvements and conduct threat hunting; Provide guidance and training to internal teams on incident response best practices
Seniority
Senior, hands-on IC
