L3 Linux Administrator – WebSphere & Ansible
Astra North Infoteck Inc. · Toronto, Canada ·
- Category
- Devops
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Senior (8–10 yrs) L3 Linux administrator role in Toronto (hybrid, 2 days/week on-site) maintaining mission-critical RHEL production environments and IBM WebSphere Application Server middleware, with a strong focus on automation through Ansible playbooks, Git-based workflows, and Configuration as Code.
Ansible
IBM WebSphere Application Server (WAS)
Red Hat Linux
8–10 years
We are seeking an experienced L3 Linux Administrator with strong expertise in Red Hat Linux, IBM WebSphere Application Server (WAS), Ansible Automation, and Configuration as Code (CaC). The successful candidate will be responsible for maintaining mission-critical production environments, supporting enterprise middleware platforms, driving infrastructure automation, and ensuring system availability, stability, security, and performance.
The role requires deep technical expertise in Linux administration, WebSphere middleware, infrastructure automation, troubleshooting, and production support within large enterprise environments.
Administer and support Red Hat Enterprise Linux (RHEL) servers across Production, DR, and Non-Production environments.
Perform OS installation, patching, upgrades, security hardening, and performance tuning.
Troubleshoot Linux operating system, storage, file system, networking, and security-related issues.
Monitor system health, capacity, and performance.
Collaborate with developers, operations, and security teams to design and implement robust, secure, and scalable infrastructure and systems.
Automate the deployment, scaling, and observability of applications and services.
Continuously improve and optimize the performance, availability, and security of our systems.
Work closely with the SRE team to design and implement deployment pipelines, incident response and recovery plans.
Continuously improve and optimize the performance, availability, and security of our systems.
Install, configure, administer, and support IBM WebSphere Application Server (WAS/WAS ND).
Manage application deployments, clustering, node synchronization, and JVM tuning.
Support IBM HTTP Server (IHS), Plugin configurations, SSL certificate management, and middleware integrations.
Perform root cause analysis and troubleshooting for WebSphere production incidents.
Support application performance tuning and platform optimization.
Develop and maintain Ansible Playbooks, Roles, and Automation Frameworks.
Implement and support Configuration as Code (CaC) principles to standardize environment configurations.
Automate server provisioning, patching, middleware deployments, compliance checks, and configuration management.
Ensure configuration consistency across environments through Git-based workflows and automation.
Collaborate with development and infrastructure teams to improve deployment efficiency.
Red Hat Linux Administration (RHEL) – Advanced troubleshooting, performance tuning, security hardening, and production support.
IBM WebSphere Application Server (WAS / WAS ND) – Installation, administration, clustering, deployment, and middleware troubleshooting.
Ansible & Configuration as Code (CaC) – Automation, configuration management, playbook development, and infrastructure standardization.
Git, GitHub, Jenkins, and CI/CD Tooling
ITSM – ServiceNow
Monitoring & Observability Tools
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