Description
Excited to grow your career?
We value our talented employees, and whenever possible strive to help one of our associates grow professionally before recruiting new talent to our open positions. If you think the open position you see is right for you, we encourage you to apply!
Our people make all the difference in our success.
Express Scripts Canada is looking for a Linux and Middleware Administrator to be part of the Infrastructure Engineering team. The primary objective of the Incumbent will be to work as a member of the Technology Services Teams working closely with Business stakeholders, Project Managers, IS Management to understand processes, business requirements and translate them into Environment technology solutions.
The Linux and Middleware Administrator role requires ability to create and analyze solutions based on business value while maintaining best design/development practices, procedures and guidelines throughout the Production Operations and Solutions Delivery lifecycle.
Furthermore, the Linux and Middleware Administrator act as a subject matter expert in RedHat Linux Administration, has the ability to perform end-to-end impact analysis of source system changes, capacity planning, performance tuning and troubleshooting.
Location: Mississauga Head Office
Working Environment: Hybrid, 2 days/week on-site
Key Responsibilities:
Lead and perform the Linux and Middleware system lifecycle management, including system upgrade, capacity planning and disaster recovery test on both legacy RedHat Linux and OpenShift environments.
Install, configure, and maintain Linux servers (RHEL) in physical and virtual environment (VMware/ESXi)
Implement and maintain Linux system security, including OS patching, hardening, and vulnerabilities remediation by following the standard procedures
Automate routine administrative task using Ansible, Bash, or Python scripting for Linux system deployment, administration and support
Monitor Linux system and OpenShift performance and troubleshoot issues across infrastructure systems and applications
Collaborate with solution development and application teams to ensure comprehensive test plans are developed and testing scripts are maintained from business specifications and ensure that defects and fixes across prioritized systems are documented, tracked and closed in conjunction with business priorities
Maintain documentation for system deployment, builds, procedure and configuration
Participate in on-call rotation and provide after-hours support for critical systems
Qualifications:
Education & Experience
Bachelor’s degree in computer science, information technology, or computer engineering, or related field.
5+ years of hands-on experience in RedHat Linux system administrator
3+ years of working experience as a VMware system administrator
3+ years of hands-on experience with RedHat OpenShift cluster administration
2+ years of working experience with Dell MX7000 and HP C7000 blade system
Technical Skills
Strong experience with RedHat Enterprise Linux (RHEL v8 and v9), or other enterprise Linux distributions.
Working knowledge of RedHat Satellite server and Identity Management (IdM) administration and support
Strong experience with VMware vSphere/ESXi, vCenter server, DRS, HA, or other virtualization platforms
Strong experience with storage system (NetApp) administration and support
Working knowledge of Apache HTTP Server, Tomcat
Familiar with Dockers, Kubernetes, CI/CD tools (Jenkins, Git, Nexus) and automation tools (Ansible, Terraform)
Working knowledge of system security and certificates deployment (PKI, SSL)
Proficiency in Shell Scripting (Bash Python)
Knowledge of supporting Oracle RAC environment
Understanding of networking concepts and protocols (TCP/IP, DNS, Load Balancing)
Knowledge of Cloud Platform (AWS, Azure) is an asset
Occasional travel within the GTA to datacenters
NOTE: Internal Candidates should apply before October 29, 2025
Please note that you must meet our posting guidelines to be eligible for consideration. Policy can be reviewed at this link.
