{"id":4278238,"url":"https://alion.io/job/dayforce-systems-administrator-sr-2","title":"Systems Administrator Sr","company":{"id":175960,"name":"Dayforce","domain":"dayforce.com","url":"https://alion.io/company/dayforce","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Dayforce","truth_index":{"grade":"B","score":79,"open_postings":25,"ghost_share":0,"stale_share":0.84,"repost_share":0,"time_to_fill_p50_days":31,"computed_at":"2026-11-12T10:38:37Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Canada"],"countries":["CA"],"hiring_countries":["US","CA"],"hiring_countries_total":2,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"DNS","optional":false},{"name":"HIPAA","optional":false},{"name":"ISO 27001","optional":false},{"name":"Least Privilege","optional":false},{"name":"Platform Engineering","optional":false},{"name":"PowerShell","optional":false},{"name":"Rest API","optional":false},{"name":"SOC 2","optional":false},{"name":"TCP/IP","optional":false},{"name":"Terraform","optional":false},{"name":"VMWare","optional":false},{"name":"VPN","optional":false},{"name":"Windows Server","optional":false}],"status":"live","first_seen_at":"2026-11-13T06:00:00Z","employer_posted_date":"2026-11-13","last_verified_at":"2026-11-13T19:42:22Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About the opportunity\nThe Senior Systems Engineer is responsible for the design, delivery, and operation of enterprise infrastructure supporting virtual desktop and application services. The role provides senior technical leadership for Omnissa Horizon 8 and related platform services across cloud and hybrid environments. This engineer ensures availability, performance, security, resiliency, and operational readiness while partnering with Cloud Hosting Operations, application, network, cybersecurity, and end-user computing teams.\nDayforce is a global human capital management (HCM) company headquartered in Toronto, Ontario, and Minneapolis, Minnesota, with operations across North America, Europe, the Middle East, and Africa (EMEA), and the Asia Pacific Japan (APJ) region. Our award-winning Cloud HCM platform offers a unified solution database and continuous calculation engine, driving efficiency, productivity, and compliance for the global workforce. Our brand promise – Makes Work Life Better™ – reflects our commitment to employees, customers, partners, and communities globally.\nLocation: This role is remote and can be performed in Canada or the United States.\nWhat you’ll get to do\nHorizon Platform Engineering: Design, implement, administer, and support Omnissa Horizon 8 virtual desktop and published application environments.\nHorizon Architecture: Own the lifecycle and configuration of Horizon Connection Servers, Unified Access Gateways, Horizon Agents, desktop pools, application pools, entitlements, and policies.\nInfrastructure Integration: Integrate Horizon with VMware vSphere, Active Directory, DNS, certificates, load balancing, storage, network services, and cloud infrastructure.\nAvailability and Recovery: Design and validate high-availability, backup, disaster recovery, and capacity strategies for Horizon and supporting infrastructure.\nPerformance and User Experience: Monitor platform health, session performance, logon times, capacity, and user experience; resolve root causes and improve service reliability.\nSecurity and Compliance: Apply secure access, least-privilege, network segmentation, certificate, logging, vulnerability remediation, and hardening controls.\nAutomation and Lifecycle Management: Automate configuration, deployment, image lifecycle, and operational tasks through PowerShell, REST APIs, Terraform, Ansible, or equivalent tools.\nIncident Leadership: Lead technical troubleshooting for complex infrastructure incidents, provide escalation support, and complete root cause analysis and corrective actions.\nCloud Infrastructure Operations and Technical Leadership: Operate Azure, AWS, Windows Server, VMware, and supporting infrastructure services; define standards, mentor engineers, maintain documentation, and coordinate change and maintenance activities.\nSkills and experience we value\nBachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent experience.\nSeven or more years of progressive systems engineering or infrastructure operations experience in enterprise production environments.\nDemonstrated hands-on experience designing, implementing, and operating Omnissa Horizon 8 or VMware Horizon environments.\nStrong experience with Horizon Connection Server, Unified Access Gateway, Horizon Agent, desktop pools, published applications, and entitlements.\nStrong experience with VMware vSphere, AWS, Azure, Windows Server, Active Directory, Group Policy, DNS, and certificate management.\nStrong understanding of TCP/IP, DNS, VPN, load balancing, firewall policy, secure remote access, and troubleshooting across virtual desktop protocols.\nExperience with enterprise storage, backup, recovery, and disaster recovery services for cloud and hybrid infrastructure.\nExperience with monitoring, alerting, logging, performance analysis, capacity planning, and availability management in a 24x7 environment.\nExperience with automation and infrastructure-as-code using PowerShell, REST APIs, Terraform, Ansible, or comparable tools.\nDemonstrated ability to lead complex incident response, root cause analysis, change implementation, and technical problem resolution.\nStrong communication, documentation, stakeholder management, and technical leadership skills.\nWhat would make you stand out\nOmnissa Horizon, VMware, Microsoft, AWS, or Azure certification is an asset.\nFamiliarity with SOC 2, ISO 27001, HIPAA, or similar security and compliance requirements is an asset.","description_format":"text","description_chars":4463,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United 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