Sr Systems Administrator
About The Position
Join Moneris as a Senior Systems Administrator focused on Windows Infrastructure, where you will lead the administration, modernization, and evolution of mission-critical enterprise platforms across on-premises and cloud environments. This role owns core Windows Server infrastructure, high-availability platforms, automation initiatives, and operational excellence for production systems. You will have significant ownership over enterprise infrastructure supporting critical business operations, with opportunities to lead platform modernization, automation, and lifecycle initiatives. Working across infrastructure, engineering, application, and security teams, you'll influence architectural decisions, drive operational improvements, and strengthen the reliability and security of production environments. This role offers exposure to hybrid cloud technologies, high-availability platforms, compliance-driven environments, and advanced automation practices while providing opportunities to mentor team members and elevate technical capability across the organization.
Requirements
- Minimum 7+ years of experience in systems infrastructure administration, design, and support.
- Bachelor's degree in Computer Science, Information Technology, equivalent experience, or advanced technical certifications.
- Deep expertise supporting enterprise Windows Server production environments.
- Strong hands-on experience with Active Directory, DNS, and Group Policy.
- Experience supporting Microsoft Clustering and SQL Server high-availability platforms.
- Advanced PowerShell scripting and infrastructure automation experience.
- Proven ability to independently troubleshoot and resolve complex production infrastructure issues.
Nice To Haves
- Experience with Azure and hybrid cloud environments.
- Experience with Ansible or similar configuration management platforms.
- Experience supporting VMware virtualization environments.
- Familiarity with PCI DSS, CIS benchmarks, Tripwire, or payment-processing environments.
- Experience working with MSSPs and managed security monitoring models.
- Industry certifications such as CISSP, GCIH, GCIA, GCED, SC-200, or equivalent.
Responsibilities
- Administer and maintain Windows Server infrastructure across on-premises and cloud environments.
- Lead Active Directory, Group Policy, and enterprise platform operations for production systems.
- Drive platform currency, patching, lifecycle management, and in-place server upgrades.
- Support Microsoft Clustering and SQL Server high-availability environments.
- Resolve complex production incidents through root cause analysis and advanced troubleshooting.
- Develop PowerShell automation and contribute to deployment and build pipelines.
- Maintain operational standards, runbooks, documentation, and service support processes.
- Mentor team members and collaborate across infrastructure, engineering, application, and security teams.
Benefits
- Remote flexibility
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What This Job Offers
Job Type
Full-time
Career Level
Senior
