Full-time

【IT】Linux System Administrator

Posted by Nomura Securities CO., LTD. • Chiyoda-ku, Tōkyō-to, Japan

📍 Chiyoda-ku, Tōkyō-to 🕒 June 24, 2026

About the Role

IT: Infrastructure
【IT】Linux System Administrator
Senior Associate 職務内容
Job Description Job/Group Overview:

Join Nomura’s Special Infrastructure team as Linux System Administrator supporting the Equity business unit. In this role you will provide dedicated production support for mission critical Linux systems, ensuring high availability, performance and security. You will monitor and troubleshoot systems, manage deployments and patches, automate operational tasks, and work closely with infrastructure, application and business teams to resolve incidents and drive continuous improvement. Responsibilities:

Provide in-depth, focused support for COLO/DMZ production infrastructure used for high-frequency, low-latency trading by Japan’s #1 broker, Nomura.
  • Collaborate closely with High Frequency Trading Systems development, project managers, and support teams. Deliver creative solutions and implement them within short, aggressive timeframes. Lead knowledge a...
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