Closed listing
Linux Administrator
- Toronto, ON, Canada
$45 to $50 CAD / hour · Contract
This opening has closed.
The original listing is kept below for reference.
Job details
- Pay
- $45 to $50 CAD / hour
- Job type
- Contract
- Closing date
- Posting language
- English
- Posted
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Search current openingsOriginal job description
Archived listing. The details below describe a past opening.
Pay Range: CAD 45-50/hr
Skills: Digital : Ansible, IBM WebSphere Application Server (WAS), RedHat Linux
Years Experience: 8-10
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
More about this job
Responsibilities
Administer and support Red Hat Linux servers and IBM WebSphere environments, including installation, patching, deployments, performance tuning, security, and production incident troubleshooting. Develop Ansible automation and Configuration as Code practices to standardize infrastructure, improve deployment efficiency, and maintain system availability, stability, and security.
Requirements
The role requires 8–10 years of experience and advanced expertise in Red Hat Linux administration, IBM WebSphere Application Server, and Ansible-based automation and Configuration as Code. Candidates should be able to troubleshoot and optimize production systems, administer middleware deployments and clusters, and support secure, consistent infrastructure across environments.
Skills
- Red Hat Linux Administration
- IBM WebSphere Application Server
- Ansible
- Configuration as Code
- Linux Troubleshooting
- Performance Tuning
- Security Hardening
- Middleware Administration
- Application Deployment
- Clustering
- JVM Tuning
- IBM HTTP Server
- SSL Certificate Management
- Git
- Jenkins
- CI/CD
Visa sponsorship
Not detected in the job text
Categories
- Technology
- Software
- Engineering
Keywords
- Red Hat Enterprise Linux
- Linux Administration
- IBM WebSphere Application Server
- WebSphere Network Deployment
- Ansible
- Configuration as Code
- Automation
- Infrastructure as Code
- IBM HTTP Server
- Middleware
- Production Support
- Disaster Recovery
- Operating System Patching
- Security Hardening
- Performance Tuning
- Troubleshooting
- Application Deployment
- Clustering
- Node Synchronization
- JVM Tuning
- SSL Certificates
- Git
- GitHub
- Jenkins
- CI/CD
- ServiceNow
- Monitoring
- Observability
- Site Reliability Engineering
- Incident Response