Systems Administrator III (Linux)

Systems Administrator III (Linux)

Join the Systems Administration team to manage, modernize, and continuously improve enterprise Linux infrastructure across on‑premises and cloud environments at Moneris. You will operate a large‑scale Red Hat Enterprise Linux (RHEL) 7/8/9/10 estate spanning thousands of virtual machines across VMware vSphere, Nutanix AHV, and Microsoft Azure Infrastructure as a Service (IaaS). Working with Site Reliability Engineering (SRE), Information Security, Cloud Operations, Infrastructure Architecture, and Application teams, you will scale reusable automation in RedHat Ansible, Python, Bash, and GitHub, and mature service ownership through documentation, standards, and observability.

Location: Toronto office with remote flexibility.

Salary: $85,000 – $113,000 base; variable or discretionary incentive components may also apply.

Responsibilities

• Manage and support RedHat Enterprise Linux (RHEL) 7/8/9/10 across development, test, production, and mission‑critical environments.
• Operate service requests, incidents, changes, and problems through ServiceNow aligned to enterprise ITIL processes.
• Maintain platform currency via patching, in‑place upgrades, migrations, remediation, and standards‑based lifecycle management.
• Build reusable automation with RedHat Ansible, Bash, Python, and GitHub to scale consistent, secure operations.
• Support hybrid infrastructure across VMware vSphere, Nutanix AHV, and Microsoft Azure IaaS virtual machines.
• Contribute to capacity planning, availability planning, service reporting, and Service Level Agreement (SLA) monitoring.
• Mature service ownership by producing technical documentation, build standards, diagrams, automation playbooks, and knowledge base articles.
• Participate in a rotational on‑call schedule supporting 24/7 critical and production systems.

Required Qualifications

• Minimum 3 years in a similar role within a large, complex enterprise environment.
• Significant hands‑on experience with RHEL 7/8/9/10 on x86_64 at scale (thousands of virtual machines) across development, test, and mission‑critical production.
• Hands‑on automation with RedHat Ansible, Bash, Python, and GitHub.
• Experience with RedHat Satellite, RedHat Hybrid Cloud Console, in‑place RHEL upgrades, and Active Directory integration via SSSD and Kerberos keytabs.
• Virtualization experience with VMware vSphere and/or Nutanix AHV, plus Microsoft Azure IaaS virtual machines.
• Use of ServiceNow and enterprise ITIL processes for incidents, changes, problems, and requests.
• Solid understanding of IPv4 fundamentals, Public Key Infrastructure (PKI), identity and access management, and least‑privilege security models.

Preferred Qualifications

• Payments industry or Payment Card Industry Data Security Standard (PCI DSS) experience, including familiarity with Center for Internet Security (CIS) benchmarks and NIST guidelines.
• Experience with CyberArk Privileged Access Security (PAS/pCloud), CyberArk Conjur Secrets Management, and Venafi.
• Experience with Microsoft Defender for Endpoint / Advanced Threat Protection (ATP), Azure Arc / Connected Machine Agent, OpenSCAP, and Fortra Tripwire.
• Exposure to container‑based infrastructure and DevOps pipelines, plus tools such as GlusterFS/FUSE, NFS, Postfix, CheckMK, and Dynatrace.

Benefits

• Health and wellness programs including Meeting Free Fridays, a company‑wide holiday closure, RRSP matching and defined‑contribution pension plan.
• Flexible benefits package starting from day 1, including a tech peripheral rebate.
• Extensive learning and development programs with unlimited free access to LinkedIn Learning and Udemy courses.
• Employee Assistance Program, educational assistance, and recognition programs.
• Discounts from over 2,400 vendors and access to employee resource groups and committees.

We welcome and encourage applications from Indigenous peoples, people of colour, people with disabilities, people of all genders, sexual orientation and intersectional identities. AI Disclosure: We may use AI-enabled tools to screen, select, and assess applications. All AI outputs are reviewed and validated by our recruitment team.

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