SMBC Group is a top-tier global financial group. Headquartered in Tokyo and with a 400-year history, SMBC Group offers a diverse range of financial services, including banking, leasing, securities, credit cards, and consumer finance. The Group has more than 130 offices and 80,000 employees worldwide in nearly 40 countries. Sumitomo Mitsui Financial Group, Inc. (SMFG) is the holding company of SMBC Group, which is one of the three largest banking groups in Japan. SMFG’s shares trade on the Tokyo, Nagoya, and New York (NYSE: SMFG) stock exchanges.

In the Americas, SMBC Group has a presence in the US, Canada, Ireland, Mexico, Brazil, Chile, Colombia, and Peru. Backed by the capital strength of SMBC Group and the value of its relationships in Asia, the Group offers a range of commercial and investment banking services to its corporate, institutional, and municipal clients. It connects a diverse client base to local markets and the organization’s extensive global network. The Group’s operating companies in the Americas include Sumitomo Mitsui Banking Corp. (SMBC), SMBC Nikko Securities America, Inc., SMBC Capital Markets, Inc., SMBC MANUBANK, JRI America, Inc., SMBC Leasing and Finance, Inc., Banco Sumitomo Mitsui Brasileiro S.A., and Sumitomo Mitsui Finance and Leasing Co., Ltd.

This is a hybrid role, requiring the successful candidate to attend our Tralee office.

Role Description

SMBC is seeking a skilled Infrastructure Support Linux Admin to join our System Support L2, aligned to the SSL2-ESG function. This role is suited to a candidate with strong hands-on Linux systems administration experience, a focus on stability, automation and monitoring. The successful candidate will have a solid background in enterprise infrastructure support. The successful candidate will bring deep expertise in Linux platforms, automation (Ansible), virtualization and backup technologies. In addition have a strong emphasis on proactive monitoring, observability and continuous improvement of system health visibility. Experience in enterprise-scale environments and operational support is essential.

You will be part of the Level 2 System Support team, responsible for triaging and resolving infrastructure issues. You will collaborate with cross-functional teams and driving operational improvements to ensure the resilience, stability and performance of critical systems.

This role will report to the Vice President of System Support L2.

Role Objectives: Delivery

Provide Level 2 support for infrastructure issues across Linux-based systems, virtualization platforms and automation frameworks.
Administer and troubleshoot Linux systems (RHEL, CentOS, Ubuntu), ensuring optimal performance, stability and uptime.
Manage identity and access controls across core infrastructure platforms (e.g. directory services and authentication mechanisms).
Develop, maintain and enhance Ansible workflows for configuration management, system provisioning and operational automation.
Support and troubleshoot VMware vSphere environments and virtual infrastructure.
Collaborate with engineering and operations teams to identify opportunities for automation, standardisation and operational efficiency.
Perform root cause analysis and contribute to long-term resolution and platform stability improvements.
Proactively monitor system health, analyze trends and identify gaps in existing monitoring coverage.
Drive enhancements in monitoring, alerting, and observability frameworks to improve early detection, reduce noise and increase actionable insights.
Produce and maintain clear documentation, runbooks and operational procedures in a centralized knowledge base.
Manage incidents, requests and problem records through ServiceNow, ensuring timely resolution and accurate updates.
Ensure compliance with internal security, audit and operational standards.
Participate in on-call rotation and provide after-hours support as required.
Work rotational shifts, including scheduled Saturday coverage, to ensure consistent support availability.

Qualifications and Skills

Minimum 3 years of experience in infrastructure operations and support, with a strong Linux focus.
Strong proficiency in Linux system administration (user management, patching, performance tuning, log analysis, shell scripting).
Hands-on experience supporting enterprise Linux environments at scale.
Experience with Ansible for automation, orchestration, and configuration management.
Solid experience with VMware vSphere and virtual infrastructure environments.
Experience with backup and recovery platforms (e.g.Rubrik) and operational processes.
Proven experience in monitoring and observability, including improving alert quality, coverage and system visibility.
Working knowledge of core networking concepts (DNS, DHCP, TCP/IP).
Strong troubleshooting, analytical and problem-solving skills.
Ability to manage multiple priorities and deliver in a high-paced operational environment.
Strong documentation, process improvement and knowledge-sharing mindset.
High sense of urgency, ownership and the ability to work both independently and collaboratively within global teams.

Additional Requirements

SMBC’s employees participate in a hybrid workforce model that provides employees with an opportunity to work from home, as well as, from an SMBC office. SMBC requires that employees live within a reasonable commuting distance of their office location. Prospective candidates will learn more about their specific hybrid work schedule during their interview process.

SMBC provides reasonable accommodations during candidacy for applicants with disabilities consistent with applicable federal, state, and local law. If you need a reasonable accommodation during the application process, please let us know at accommodations@smbcgroup.com.

Infrastructure Support Linux Admin

Job Description