Adecco is currently hiring a System Administrator for a full-time 3-year contract opportunity based in Ottawa, ON. This is a hybrid role requiring a valid Secret level security clearance (mandatory for consideration). It is an excellent opportunity for an experienced IT infrastructure professional with strong expertise in enterprise systems, virtualization, and data centre environments.This position supports complex enterprise IT operations, including servers, storage, networking, virtualization, and enterprise applications. The successful candidate will be responsible for maintaining system stability, supporting upgrades, improving performance, and ensuring secure and efficient operations across multiple platforms.Pay Rate: $77,000 - $125,000Location: Ottawa, ON (Hybrid)Schedule: Full-time, variable schedule within Monday to Friday (7:00 AM - 5:00 PM, 8-hour shifts)Security Clearance: Secret level clearance required (mandatory)Employment Type: Contract (full-time)Vacancy Status: This posting is for an existing vacancy.ResponsibilitiesSupport enterprise data centre operations including servers, storage systems, virtualization platforms, and network infrastructureInstall, configure, upgrade, and maintain Windows and Linux operating systems, including Active Directory and Group Policy environmentsAdminister and support virtualization environments, including deployment, optimization, and maintenance activitiesManage enterprise storage, backup, and archival systemsSupport and maintain Microsoft SCCM/SCOM for patching, software deployment, and system monitoringInstall and administer Exchange Server environments and related mail servicesPerform troubleshooting by replicating and diagnosing system and end-user issuesExecute backup, replication, and disaster recovery procedures, including failover to DR environmentsMonitor system performance and recommend optimization improvementsAdminister GIS and enterprise applications including ArcGIS Server, Portal for ArcGIS, ArcGIS Pro, and SQL Server environmentsConfigure, maintain, and support network infrastructure including routers, switches, and security appliancesDesign and document virtual server, desktop, and cloud architectures, including technical build documentationDevelop and execute system test plans and produce detailed test results and reportsPrepare and deliver technical presentations, demonstrations, and documentation as requiredRequirementsMust be eligible to work and reside within CanadaDiploma or Degree in Computer Science, Computer Engineering, or equivalent education from a recognized institutionMinimum 5 years of experience as a System Administrator within the last 10 yearsStrong hands-on experience with virtualization, operating systems, databases, Exchange, and GIS enterprise systemsExperience administering Active Directory and Group Policy in enterprise environmentsProven experience delivering enterprise IT solutions in large-scale government or private sector environmentsExperience with data centre hardware including servers, storage systems, and enterprise networking equipmentRelevant certifications such as MCSE, MCP, or ITIL are requiredStrong troubleshooting, analytical, and problem-solving skillsAbility to work independently in secure and regulated environmentsWhy This RoleLong-term 3-year contract with stable engagementHybrid work arrangement in a secure enterprise environmentExposure to complex infrastructure and mission-critical systemsOpportunity to work across virtualization, GIS, and enterprise-scale IT platformsInterested in this position? Apply now! Our dynamic recruitment team is ready to welcome you and support you on your path to success.At Adecco, our purpose is simple: to make the future work for everyone. We live our values - Passion, Collaboration, Inclusion, Courage, and Customer-Centricity - by fostering a workplace where diversity is celebrated and every voice matters. We encourage applications from people of all backgrounds and identities. Together, we are shaping a future that works for everyone.If you would like to learn more about Aspire Academy to enhance your skills for your next role, feel free to ask!@@j#CAB7616