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About the Role

We are seeking a visionary and hands-on SOC Lead to architect our future-ready security operations, leveraging AI and automation to neutralize machine-speed attacks while mentoring high-performing security talent. This role is critical to our transformation phase to address the era of autonomous, AI-driven cyber threats, evolving from a reactive monitoring unit into a proactive, intelligence-led, and autonomous defense organization.

Responsibilities

• Lead the evolution of the SOC from a reactive monitoring unit to an autonomous, AI-augmented defense organization.
• Architect and implement AI-driven detection and response workflows.
• Drive the integration of SOAR (Security Orchestration, Automation, and Response) to counter autonomous AI attacks.
• Manage the 24/7 SOC team, ensuring high-availability monitoring, rapid incident response, and continuous service improvement.
• Provide L3-level escalation support for complex incidents.
• Oversee security monitoring of Telco-specific network architectures, containerized environments, and Kubernetes (K8s) clusters.
• Establish rigorous SOC governance, including the creation and maintenance of playbooks and SOPs that meet international audit and compliance standards.
• Assist in high-stakes Digital Forensics and Incident Response (DFIR) efforts, conducting deep-dive analysis to harden the environment against future threats.
• Partner with cross-functional security teams and Business Units to ensure security is integrated throughout the infrastructure lifecycle.
• Stay at the bleeding edge of offensive and defensive AI research to proactively adapt security posture against evolving adversary tactics.

Requirements

• Proven experience leading technical teams in a 24/7 environment.
• Demonstrated ability to mentor and grow security talent.
• Deep understanding of leveraging AI for threat hunting, anomaly detection, and automated response.
• Strong experience in a Telco environment, including knowledge of SS7/Diameter/GCP protocols, 5G core security, and virtualization.
• Expert-level knowledge of containerization (Docker) and Kubernetes (K8s) security.
• Advanced scripting skills (Python, Go, or Bash) and extensive experience with SOAR platforms.
• Expert capability in conducting digital forensics and managing incident response lifecycles.
• 10+ years in Cyber Security, with at least 6 years in a leadership role within a SOC.
• Bachelor's or Master's degree in Computer Science, Cyber Security, or a related field.
• Relevant industry certifications (e.g., CISSP, CISM, GCIH, GCFA, or equivalent).

Skills

• AI/ML in Security
• Telco & Infrastructure
• Cloud-Native Security
• Automation
• DFIR
• Python
• Go
• Bash
• SOAR platforms
• Docker
• Kubernetes (K8s)
• SS7/Diameter/GCP protocols
• 5G core security
• Virtualization
• LLM-based security tools
• Cloud security (AWS/Azure/GCP)

Location

• 24/7 environment

Work Type

• 24/7 SOC
• Full-time

Experience Level

• 10+ years in Cyber Security
• 6 years in a leadership role within a SOC

Education Level

• Bachelor's or Master's degree in Computer Science, Cyber Security, or a related field.

About the Company

• Cyber Defense Operations Section operates a 24/7 Security Operations Center (SOC) protecting Rakuten Group's critical infrastructure.
• We are currently in a critical transformation phase to address the era of autonomous, AI-driven cyber threats.
• Our goal is to evolve from a reactive monitoring unit into a proactive, intelligence-led, and autonomous defense organization.