Cloud Infrastructure Engineer (OpenStack)
First seen by Alion on Sep 3, 2026.
◎ Private Cloud Infrastructure Engineer (OpenStack)
◎ Enterprise Financial Services Environment
◎ Linux, Automation & Cloud Platform Engineering
◎ Location: Roppongi, Tokyo
Position Overview
EIRE Systems is seeking an experienced Cloud Engineer to support and enhance a large-scale private cloud environment supporting critical financial services operations.
This role combines cloud infrastructure engineering, automation, observability, and platform operations, providing an opportunity to work across the full lifecycle of cloud services, from design and deployment through ongoing optimization and support.
Technical Environment
- Operating Systems: Ubuntu, Red Hat Enterprise Linux, CentOS
- Cloud & Virtualization: OpenStack, KVM, Docker, LXC/LXD, MaaS
- Observability: Grafana, Prometheus/Mimir, Loki, Tempo, and IRM
- Automation & Provisioning: Ansible, Juju, Puppet, Terraform, GitLab CI/CD, and GitHub Actions
- Storage & Networking: Ceph, Cisco ACI, HAProxy, Pacemaker, Keepalived, BIND, and FreeIPA
Key Responsibilities
- Support and maintain a large-scale OpenStack private cloud environment.
- Design and implement features for infrastructure software components, managing the full lifecycle of changes from concept through production deployment.
- Lead the integration, administration, and continuous improvement of the Grafana observability ecosystem.
- Implement and maintain comprehensive monitoring across metrics, logs, and distributed tracing.
- Troubleshoot complex issues involving Linux systems, virtualization technologies, containers, and software-defined networking.
- Utilize observability data to identify bottlenecks, improve performance, and proactively resolve infrastructure issues.
- Drive infrastructure automation initiatives and support the migration of applications and services onto private cloud platforms.
- Participate in an on-call support rotation to ensure platform availability and rapid incident response.
Company Info
For more than 25 years, EIRE Systems has provided professional IT Services to multinational corporations operating in Japan, as well as Japanese companies looking to expand into overseas markets.
Working with our clients we:
- Manage their IT infrastructure and technology upgrade projects.
- Design and implement new technology solutions.
- Support and manage their existing IT environments using our on-site and remote Managed Services and Outsourcing Solutions.
As a company that started up here in Tokyo, EIRE Systems is owned and managed by IT professionals who are originally from Ireland. We have built a truly international business culture, offering a unique blend of Japanese and Western business practices.
EIRE Systems provides a wide-range of career choices for internationally-minded technology and support professionals. From the company's small beginnings, EIRE Systems currently has 150 Tokyo-based employees and is expanding it's local, regional and global expertise. We have established offices in Hong Kong, Singapore and Shanghai and are reaching further as we grow our presence throughout the Asia-Pacific.
Measures against passive smoking: No smoking indoors allowed
Working Hours
09:00 - 18:00 Mon. - Fri.
*There may be occasional requests for Saturday, Sunday and Public Holiday shift work.
Job Requirements
Required Experience & Skills
- Minimum 5 years of experience supporting Linux systems, with deep knowledge of Linux internals including namespaces, cgroups, kernel tuning, and systemd.
- Proven experience deploying and managing OpenStack environments at scale.
- Strong experience with virtualization technologies, particularly KVM.
- Hands-on experience with the Grafana ecosystem or an equivalent observability platform, including metrics, logging, and distributed tracing.
- Solid understanding of networking technologies, including L2/L3 networking, VXLAN, and BGP.
- Experience working with distributed storage technologies such as Ceph.
- Professional experience with Infrastructure-as-Code tools such as Ansible, Terraform, or Juju.
- Proficiency in Bash scripting and at least one modern programming language, preferably Python or Go.
- Bachelor's degree (or higher) in Computer Science, Computer Engineering, or a related technical field.
Preferred Qualifications
- Experience deploying and supporting Kubernetes in a high-availability production environment.
- Familiarity with Canonical technologies including MaaS, Juju, and LXD.
- Experience applying Site Reliability Engineering (SRE) concepts, including SLIs, SLOs, and Error Budgets.
English Level
Business Conversation Level (TOEIC 735-860)
Japanese Level
Daily Conversation Level
Salary
JPY - Japanese Yen JPY 6000K - JPY 10000K
Other Salary Description
Social Insurance
Commuting/Transportation Allowance
Education Training
Holidays
Five-Day Workweek
Paid Holidays
Congratulatory or Condolence Leave
Child-care Leave
Sick Leave