Senior Linux Administrator

Information Systems Dublin, County Dublin, Ireland

Description

About the role

In the role, the successful candidate will:

* Ownership for assigned incidents, requests and other ticket types associated with the Linux hosting environment

* Troubleshoot issues with ICT services in conjunction with Information Systems colleagues

* Ensure all systems & Servers are functioning & communicating properly. Systems include:

* RHEL OS (version 8, upgrade to 10 planned)

* RH OpenShift running in Azure (ARO)

* Automation: Ansible Automation Platform, Automation Hub, Bash Scripting

* Version Control: Git (Bitbucket), SVN

* Atlassian: Jira, Confluence

* CI/CD: Jenkins, SonarQube, Sona type

* Security: Rapid7, Aquasec, OSSEC

* Monitoring: Opsview, Prometheus

* Logging: EFK, LOKI, Splunk

* Cloud: Azure Platform

* Daily system administration duties

* Liaise with 3rd party vendors

* Ensure the Red Hat environment is patched and up to date with all security and feature patches

* Monitor environment performance

* Ensure Dev Ops policies, standards & procedures are developed, implemented and adhered to

* Ensure relevant documentation is regularly updated & maintained

* Conduct regular disaster recovery testing ensuring backup plans & documentation are up to date

Requirements

About you

We are looking for somebody who has the following background and skills:

• A strong understanding of best practices in terms of policies, standards and controls appropriate to a large financial services organization

• Background working in financial institutions preferable

• Relevant accreditations required

• Must have 5 years' experience in relevant role

• Possess an advanced understanding of Linux concepts and technologies

• Experienced at organizing, prioritising & multitasking

• Experience in working with 3rd party vendors

Experience with:

* RHEL OS (version 8, upgrade to 10 planned)

* RH OpenShift running in Azure (ARO)

* Ansible Automation Platform and Automation Hub

* Version Control: Git (Bitbucket), SVN

* Atlassian: Jira, Confluence

* CI/CD: Jenkins, SonarQube, Sonatype

* Security: Rapid7, Aquasec, OSSEC

* Monitoring: Opsview, Prometheus

* Logging: EFK, LOKI, Splunk

The candidate must demonstrate:

• A good aptitude for relevant technologies

• Proven experience Linux administration

• Exceptional critical thinking & problem-solving ability

• Knowledge of best practices regarding management, control & monitoring of the Linux Environment

• Ability to work independently under minimal supervision

• Knowledge of computing infrastructures

• Excellent troubleshooting skills

• Good interpersonal & communication skills to provide support in a professional manner

• Ability to work on own initiative & demonstrate proactive ownership of tasks and issues with a defined SLA

• Self-motivated with good judgement, organisational and time management skills

• An ability to follow established processes & procedures and define new ones when appropriate

• Good attention to detail

• Good team working capability

• Dedicated and flexible work attitude