L3 Linux Administrator – WebSphere & Ansible

Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!; Toronto; Hybrid; CAD 120,000 - 150,000; Full time

Job summary

Astra-North Infoteck Inc. is seeking an experienced L3 Linux Administrator to maintain mission-critical production environments, with strong Red Hat Linux, IBM WebSphere Application Server (WAS), Ansible Automation, and Configuration as Code (CaC).

The successful candidate will be responsible for supporting enterprise middleware platforms, automation, and ensuring system availability and security. The role requires deep Linux administration expertise, WebSphere middleware experience, and

Qualifications

• Advanced Red Hat Linux administration and production support.
• WAS/WAS ND middleware installation, clustering, and tuning.
• Automation using Ansible and CaC practices.
• Experience with Git-based workflows and deployment pipelines.

Responsibilities

• Administer and support Red Hat Enterprise Linux (RHEL) servers across Production, DR, and Non-Production.
• OS installation, patching, upgrades, security hardening, and performance tuning.
• Troubleshoot Linux OS, storage, filesystem, networking, and security issues.
• Monitor system health, capacity, and performance.
• Collaborate with developers, operations, and security teams on robust infrastructure.
• Automate deployment, scaling, and observability of applications and services.

Skills

RHEL

WAS

Ansible

Tools

GitHub

Jenkins

CI/CD Tooling

Job description

L3 Linux Administrator - WebSphere & AnsibleLocation: Toronto, ON
Work Arrangement: Hybrid - 2 days per week in-person at Toronto office preferred

Skills

• Ansible

• IBM WebSphere Application Server (WAS)

• Red Hat Linux

Years of Experience

• 8-10 years

Job Summary

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.

Key Responsibilities

• 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.

Top 3 Required Skills

• 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.

Top 3 Preferred Skills

• Git, GitHub, Jenkins, and CI/CD Tooling

• ITSM - ServiceNow

• Monitoring & Observability Tools