Haken L2 - L3 Server Support Engineer - Windows & Linux | Tokyo

Join a leading global Managed Service Provider (MSP) in Tokyo as an L2/L3 Server Technical Support Engineer, delivering advanced IT infrastructure support to enterprise clients across Japan.

In this contract position, you will provide Level 2 and Level 3 technical support for business-critical server environments, diagnosing complex operating system issues, resolving hardware failures and maintaining reliable enterprise infrastructure.

You will work extensively with Windows Server 2016/2019/2022, Red Hat Enterprise Linux (RHEL), Ubuntu, Dell PowerEdge and HPE ProLiant systems, supporting a diverse range of enterprise technologies.

Your responsibilities will include server troubleshooting, RAID fault investigation, Active Directory administration, patch management, firmware updates, kernel upgrades and incident escalation.

Working alongside internal engineering teams, on-site field technicians and technology vendors such as Microsoft, Red Hat and Dell, you will help resolve critical infrastructure incidents within agreed Service Level Agreement (SLA) targets.

This opportunity is ideal for an experienced Server Support Engineer, Windows Server Administrator, Linux Systems Engineer or IT Infrastructure Support Specialist seeking a Tokyo-based contract role with exposure to multiple enterprise environments and a clear pathway towards senior systems engineering.

Key Responsibilities

• Provide L2/L3 technical support for enterprise server infrastructure, investigating and resolving complex operating system and hardware incidents.
• Diagnose and troubleshoot Windows Server 2016, 2019 and 2022, alongside Linux environments including RHEL and Ubuntu.
• Investigate enterprise hardware failures involving Dell PowerEdge and HPE ProLiant servers, including RAID degradation, driver conflicts and memory dump errors.
• Use Windows Event Viewer, Syslog, PowerShell and Linux command-line tools to identify root causes and restore system stability.
• Perform scheduled server patching, firmware updates, operating system maintenance and Linux kernel upgrades.
• Troubleshoot Active Directory, Group Policy (GPO), DNS and DHCP issues affecting enterprise server environments.
• Support infrastructure running on Hyper-V or VMware ESXi, investigating virtual machine and host-related issues.
• Coordinate with Microsoft, Red Hat, Dell and other vendor support teams to escalate and resolve critical technical incidents.
• Manage technical incidents in accordance with SLA requirements, providing clear written updates, troubleshooting records and resolution documentation.
• Collaborate with on-site field technicians, infrastructure engineers and customer IT teams during scheduled maintenance windows and complex incident resolution.

Required Skills and Qualifications

Experience:

• 3+ years of professional experience in server technical support, systems administration or enterprise infrastructure operations.
• Strong hands-on troubleshooting experience with Windows Server operating systems, ideally including versions 2016, 2019 and 2022.
• Practical knowledge of Linux server administration and troubleshooting, particularly RHEL or Ubuntu.
• Strong diagnostic skills using Windows Event Viewer, Syslog, PowerShell and Linux CLI troubleshooting tools.
• Experience investigating enterprise server hardware faults, including RAID, firmware, driver and memory-related issues.
• Hands-on experience with Active Directory, Group Policy (GPO), DNS and DHCP.
• Familiarity with Hyper-V or VMware ESXi virtualisation environments.
• Experience performing server patching, firmware maintenance, operating system upgrades and incident escalation in production environments.

Soft Skills:

• Strong customer service orientation, with the ability to communicate clearly and professionally with enterprise clients.
• Excellent written communication skills for providing accurate incident ticket updates and technical resolution summaries.
• Strong analytical thinking and critical problem-solving abilities when investigating complex operating system and hardware issues.
• Collaborative working style when coordinating with vendor support engineers, field technicians and internal infrastructure teams.
• Ability to remain calm and methodical during high-priority incidents and time-sensitive SLA escalations.
• Strong attention to detail, documentation discipline and commitment to maintaining reliable customer infrastructure.

Language Requirements:

• Japanese: Native level for communication with enterprise customers, domestic IT teams and on-site technical staff.
• English: Intermediate to business level for technical documentation and collaboration with global support teams and international vendors.

Preferred Skills & Qualifications

• MCSA, MCSE or Red Hat Certified System Administrator (RHCSA) certification.
• Experience supporting Dell PowerEdge or HPE ProLiant enterprise server hardware.
• Advanced troubleshooting experience with RAID degradation, memory dumps, driver conflicts and firmware-related incidents.
• Experience administering Hyper-V or VMware ESXi in enterprise production environments.
• Familiarity with IT service management, incident ticketing systems and SLA-driven technical support operations.
• Previous experience working for a Managed Service Provider (MSP) or supporting multiple enterprise customer environments.

About the Company

Our client is a premier global Managed Service Provider (MSP) trusted by enterprise organisations across Japan to maintain secure, stable and highly available IT infrastructure.

The company provides comprehensive technical support and infrastructure operations services, helping customers manage complex server, operating system, hardware and technology environments.

Its engineering teams support a broad range of enterprise technologies, offering exposure to Windows Server, Linux, enterprise hardware, virtualisation and cloud-related infrastructure.

The organisation places strong emphasis on structured technical development, collaborative problem-solving and knowledge sharing, supported by an extensive internal knowledge base and experienced engineering colleagues.

This is an opportunity to develop your expertise in L2/L3 server support and enterprise infrastructure troubleshooting while building a long-term career path towards senior systems engineering or infrastructure management.

Why You'll Love Working Here

• Earn a competitive contract rate of ¥3,500-¥4,000 per hour.
• Gain extensive experience providing L2/L3 technical support for enterprise clients across Japan.
• Work with a broad range of technologies, including Windows Server, RHEL, Ubuntu, Dell PowerEdge and HPE ProLiant.
• Strengthen your expertise in server hardware troubleshooting, operating system diagnostics and infrastructure incident management.
• Develop practical experience with Active Directory, Group Policy, DNS/DHCP, Hyper-V and VMware ESXi.
• Benefit from continuous learning opportunities across diverse enterprise hardware, operating systems and cloud environments.
• Follow a structured career development pathway towards Senior Systems Engineer or Infrastructure Management positions.
• Work within a supportive global MSP environment with strong engineering collaboration and team backing.
• Access a comprehensive technical knowledge base to support troubleshooting, learning and professional development.
• Take advantage of fully covered technical certification examination fees, supporting continued professional growth.

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