Senior IT Engineer | Corporate IT & Infrastructure

Senior IT Engineer – Corporate IT & On-Premises Infrastructure

Join a Tokyo-based technology company as one of two hands-on Senior IT Engineers supporting the reliability and security of its corporate IT environment. The work is approximately 90% office IT and 10% network engineering across multiple Tokyo locations. One of the two hires will be appointed to a manager role after joining; the selection and timing will be communicated during the hiring process.

Responsibilities
• Provision, configure, patch, troubleshoot and manage laptops, PCs, mobile devices and other endpoints.
• Support employees with onboarding, offboarding, accounts, access, authentication and IT service requests.
• Operate and troubleshoot on-premises Linux servers, server-room equipment and office infrastructure.
• Support multi-site WAN, VPN, switching, routing and network security, and document and implement approved changes.
• Maintain endpoint security, access controls, patching, vulnerability remediation and audit records.
• Automate routine tasks with scripting and configuration-management tools; perform first-line checks on container and Kubernetes workloads and escalate advanced issues.

Working conditions and benefits
Full-time; flexible working hours, 8 hours per day within 07:00–22:00. Two days of remote work per week, potentially expanding to four based on performance. 15 days of paid leave, commuter allowance, housing allowance subject to location, learning support and social insurance. Salary is negotiable based on experience.

The technology team works in English. Business-level Japanese is preferred. The hiring company will be shared during the recruitment process.

• Hands-on corporate or internal IT experience covering endpoints, employee support, access and IT systems.
• Practical Linux and on-premises server administration and troubleshooting.
• Enterprise networking fundamentals: L2/L3, TCP/IP, DNS, WAN, VPN, firewalls and security gateways.
• Experience with configuration management or automation; Ansible is preferred. Basic familiarity with containers and Kubernetes is useful.
• Security, patching, monitoring and vulnerability remediation knowledge.
• Business-to-fluent English; business Japanese (around JLPT N2) is preferred.
• Strong troubleshooting, documentation and communication skills.