Haken Cyber Security Engineer - SOC & Cloud Tokyo

Join a leading retail organisation in Tokyo as a Cyber Security Engineer, protecting critical business systems, digital services, and sensitive customer data across a complex enterprise technology environment.

This hands-on cybersecurity role focuses on security monitoring, threat detection, vulnerability management, incident response, cloud security, and security operations (SOC). You will investigate security events across corporate, retail, cloud, and infrastructure environments while working with technology teams to strengthen the organisation's overall cyber defence.

This is an excellent opportunity for a Cyber Security or Information Security professional looking to develop experience across SIEM, endpoint security, vulnerability scanning, enterprise infrastructure, cloud technologies, and incident response within a large-scale retail environment.

Key Responsibilities

• Monitor and investigate cybersecurity events and potential threats across corporate, retail, cloud, and infrastructure environments.
• Analyse security alerts and identify suspicious activity, vulnerabilities, and potential security incidents.
• Investigate vulnerabilities and collaborate with technology teams to implement appropriate remediation measures.
• Support the development and continuous improvement of security controls, policies, and operational procedures.
• Respond to cybersecurity incidents and assess their potential impact on systems, data, and business operations.
• Coordinate appropriate incident containment, remediation, recovery, and follow-up activities.
• Conduct security assessments to identify risks, control gaps, and opportunities to strengthen the organisation's defensive posture.
• Support vulnerability management activities across enterprise infrastructure, applications, networks, and cloud environments.
• Work with security monitoring, SIEM, endpoint protection, vulnerability scanning, and related cybersecurity technologies.
• Collaborate with infrastructure, application, and business teams to embed security requirements into technology initiatives.
• Translate technical security findings into practical remediation recommendations for relevant stakeholders.
• Contribute to continuous improvements in cybersecurity resilience and security operations.

Required Skills and Qualifications

Experience:

• Professional experience in Cybersecurity, Information Security, SOC Operations, or a related technical discipline.
• Strong understanding of cybersecurity principles, threat detection, vulnerability management, and incident response.
• Experience investigating security events, vulnerabilities, or cybersecurity incidents.
• Experience working with enterprise IT infrastructure, networks, operating systems, and cloud technologies.
• Familiarity with security monitoring and SIEM technologies.
• Experience or knowledge of endpoint protection and endpoint security technologies.
• Familiarity with vulnerability scanning and vulnerability management tools and processes.
• Ability to investigate technical security issues methodically and translate findings into practical solutions.
• Understanding of security controls and operational security procedures.
• Experience working with technical teams to remediate security risks and vulnerabilities.

Soft Skills:

• Strong communication skills with the ability to collaborate effectively with both technical and non-technical stakeholders.
• Methodical and analytical approach to cybersecurity investigation and problem-solving.
• Ability to work effectively in a fast-paced enterprise or customer-focused environment.
• Strong collaboration skills when working with infrastructure, application, security, and business teams.
• Ability to communicate cybersecurity risks and technical findings clearly to relevant stakeholders.
• Proactive approach to identifying security weaknesses and improving cyber resilience.
• Strong sense of ownership when responding to security incidents and operational priorities.

Language Requirements:

• English: Fluent-level proficiency required for professional communication in an international technology environment.
• Japanese: Conversational-level proficiency; Japanese language ability is advantageous for collaboration within the local business environment.

Preferred Skills & Qualifications

• Experience working in a Security Operations Center (SOC) or enterprise cybersecurity environment.
• Hands-on experience with SIEM, endpoint detection and protection, or vulnerability scanning technologies.
• Experience supporting cybersecurity within retail, FMCG, e-commerce, or other customer-facing environments.
• Knowledge of cloud security and security monitoring across cloud infrastructure.
• Experience conducting security assessments and identifying control gaps.
• Knowledge of incident containment, remediation, recovery, and post-incident improvement.
• Experience securing environments that handle sensitive customer or business data.
• Understanding of security considerations across corporate IT, retail systems, digital services, and cloud platforms.

About the Company

Our client is a leading retail organisation with a large technology footprint supporting customers, stores, digital services, and corporate operations.

Its cybersecurity function protects sensitive customer information and critical business systems across a complex and constantly evolving technology environment.

The organisation continues to invest in technology and cybersecurity capabilities to strengthen resilience, protect critical services, and maintain a seamless customer experience.

Why You'll Love Working Here

• Work at the intersection of cybersecurity and large-scale retail technology.
• Protect critical systems, digital services, and customer data used across a major retail organisation.
• Gain exposure to diverse real-world cybersecurity threats and security incidents.
• Develop expertise across SOC operations, SIEM, threat detection, vulnerability management, incident response, endpoint security, and cloud security.
• Collaborate with experienced infrastructure, application, cybersecurity, and business teams.
• Work across complex corporate, retail, cloud, and infrastructure environments.
• Make a visible contribution to strengthening the organisation's overall cybersecurity posture and resilience.
• Build practical security experience within a large, customer-focused enterprise environment.

Don't Miss Out - Apply Now!