Cybersecurity Operations & Security Engineer
- Tokyo
- No Remote
- Full-time
- June 9, 2025
You will play a hybrid role, covering both practical security operations and security engineering.
You will be responsible for protecting digital infrastructure, detecting and responding to potential threats, and working with cross-functional teams to implement security best practices.
You will be responsible for ensuring the robustness of both the operational environment and infrastructure in the rapidly evolving Web3 and blockchain ecosystems.
Job Description
Security Operations
Incident Detection and Response:
- Monitor security tools, systems, and logs to identify, investigate, and respond to security events
- Work with internal teams to lead incident triage and resolution
- Conduct root cause analysis and create detailed reports for management
Threat Detection and Hunting:
- Analyze and track emerging threat trends in digital assets, blockchain, and Web3 technologies
- Maintain and strengthen threat intelligence pipelines and integrate them into security operations
Infrastructure Security
- Work with DevOps and engineering teams to integrate security into CI/CD pipelines and container environments (Docker, Kubernetes)
- Regularly assess and strengthen infrastructure security, including system configurations, firewalls, and access controls
- Improve efficiency of monitoring and operations by automating security processes and workflows
Vulnerability Management and Response
- Conduct vulnerability assessments for systems, applications, and infrastructure
- Work with IT, DevOps, and engineering teams to promote the remediation of discovered vulnerabilities
- Keep abreast of new vulnerability information and propose patch application or mitigation measures
Security Engineering
- Formulate and implement security policies, standards, and procedures to protect corporate assets
- Build and maintain security tools and solutions such as SIEM, EDR, IDS/IPS, and WAF
- Conduct security reviews of systems, applications, and third-party integrations
Process Improvement and Documentation
- Develop and improve security operations playbooks and incident response procedures
- Document security architecture, processes, and standards (for internal and external use)
- Conduct training and awareness activities to ensure that each team understands and adheres to security protocols
About OSL Japan
OSL Japan is a venture company focused on the crypto asset exchange business. They also do work in system development and marketing related to blockchain technology, and more.
In September 2020, OSL Japan received approval from the Financial Services Agency and completed their registration as a crypto asset exchanger based on the Funds Settlement Law. OSL Japan plans to develop the company in not only the crypto asset exchange business, but also various new ventures. They are in need of new members to help with the expansion of the business.
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