Description
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
Express Scripts Canada is a Cigna company
Express Scripts Canada is a subsidiary of Express Scripts, a Cigna company. Cigna Corporation (NYSE: CI) is a global health service company dedicated to improving the health, wellbeing and peace of mind of those we serve. Cigna offers an integrated suite of health services through Cigna, Express Scripts, and our affiliates including medical, dental, behavioural health, pharmacy, vision, supplemental benefits, and other related products.
About Express Scripts Canada
Express Scripts Canada is a leading health benefits manager and has been recognized as one of the most innovative. Our clients include Canada's leading insurers, third party administrators and governments. We work with these clients to develop industry-leading solutions to deliver superior healthcare in a cost-controlled environment. We provide Active Pharmacy™ services to more than 7 million Canadian patients and adjudicate more than 100 million pharmacy, dental, and extended health claims annually. Through our proprietary consumer intelligence, clinical expertise, and patients-first approach, we promote better health decisions for plan members, while managing and reducing drug benefit costs for plan sponsors.
It will be a condition of employment that the successful candidate obtains an Enhanced Reliability Clearance from the Federal Government. The candidate will be required to provide supporting documentation to receive clearance if required.
We offer a competitive salary and benefits package, along with a positive work environment built on solid corporate values, integrity, mutual respect, collaboration, passion, service and alignment.
We are an equal opportunity employer that promotes a diverse, inclusive and accessible workplace. By embracing diversity, we build a more effective organization that empowers our employees to be the best that they can be.
We are committed to creating a working environment that is barrier-free and we are prepared to provide accommodation for people with disabilities.
If you require accommodation in completing the online application process, please email: eschr2@express-scripts.com Do not email eschr2@express-scripts.com for an update on your application or to provide your resume as you will not receive a response.
