High Frequency Unix System Administrator

This is an excellent opportunity to join Barclays as a High Frequency Unix Systems Administrator within our global SI UNIX team, serving as a key regional escalation point in Tokyo. This role offers strong international exposure, the chance to lead through technical expertise, and a clear pathway for progression into more senior roles. As part of this team, you will support and enhance the low latency Linux platforms used by our trading and execution teams—an environment where performance, stability, and speed truly matter. You’ll work across the full technology stack, including build, configuration, monitoring, incident investigation, and continuous improvement. Rather than performing routine “runbook-only” operations, you will collaborate directly with application teams and infrastructure specialists to design fit for purpose solutions and respond swiftly to evolving business needs. You will play a significant role in driving automation and improving platform resilience through tools such as Chef, Ansible, and scripting. Your work will directly reduce manual effort, strengthen system reliability, and contribute to continuous uplift of the overall environment.