Linux System Administrator (SR)

Career Opportunity for a Linux System Administrator in Japan!

 

■ Linux System Administrator

 

■ Company Overview

A leading Japan-headquartered global financial services organization with a strong presence across Asia, Europe, and the Americas. The company is known for its long-standing market reputation and is currently investing heavily in technology modernization, cloud platforms, and backend engineering to support mission-critical global systems.

 

■ Your Role and Responsibilities 

● Collaborate closely with High Frequency Trading Systems development, project managers, and support teams. Deliver creative solutions and implement them within short, aggressive timeframes. 

● Engage confidently and directly with the High Frequency Trading desk on a variety of client-related needs. Occasionally required to join client calls to communicate with clients and translate their requirements into practical designs and solutions for the COLO data center.

● Participate in, and lead when required, new exchange connectivity build-out projects. Though infrequent, these projects require focused execution under tight deadlines.

● Operate independently and with team members across diverse locations, including Greater Asia, Europe, and the USA.

● Take responsibility for systems availability and smooth operations, including troubleshooting, incident investigation, emergency escalation, and root-cause analysis.

● Perform system administration tasks such as software installation and configuration, patching, system monitoring, performance tuning, capacity planning, and disaster recovery drills.

● Work with the Cross Platform Engineering team to deliver solutions: define operational requirements, negotiate schedules, and drive the implementation of engineered solutions.

● Execute system changes following company policies and change management procedures: collect requirements, propose changes, assess impacts, conduct non-production testing, present at Change Management meetings, obtain approvals, deploy to production, and perform post-change

validation.

● Understand, negotiate, and address IT security, audit, compliance, and regulatory requirements. Ensure systems and services adhere to approved standards.

● Submit and track support cases, and drive vendors to provide solutions, fixes, and reports.

● Create and maintain technical documentation of system architecture, operational procedures, and runbooks.

 

■ Experience and Qualifications

● Technical Skills / Experience

[UNIX]

● In-depth knowledge of Enterprise RedHat Linux (RHEL) version 8 and above on bare metal.

● Solid experience in latency optimization, capacity planning, and computational tuning of RHEL on bare metal.

● Scripting experience in one or more of: shell, Python, Perl, Ansible.

● Practical experience with UNIX core services (e.g., LDAP authentication, Kerberos, Ansible Tower).

● Understanding and experience with DevOps and telemetry tools.

● More than 5 years’ UNIX support experience.

[Core Infrastructure]

● Strong understanding of high-performance computing using HPE servers or equivalent, including BIOS tuning and firmware options for low-latency networking.

● Familiarity with high-performance networking hardware/software stacks such as Solarflare, Onload, PTP, or similar.

● Hands-on experience with time-server technologies (for example, Meinberg receivers and GPS or equivalent).

● Familiarity with DNS/DHCP and Bluecat management software or comparable tools.

● Good knowledge of network firewalls.

 

■ Additional Preferred Qualifications

● Experience working in an organization with a global infrastructure and cross regional teams.

● Commitment to Site Reliability Engineering (SRE) principles standardization and automation.

● High vigilance regarding IT governance and IT security.

● Good understanding of AutoSys software or equivalent scheduling tools.

● Knowledge of Tibco RV or similar middleware messaging software.

[Language]

● Fluent English with strong communication skills.

 

■ Good Reasons to Join

● Collaborate with international teams across Japan, Asia, Europe, and the U.S.

 

■ Work Location

Tokyo, Japan
 

Details will be provided during the meeting.