Senior Systems Administrator

Detroit IT / Core 3 Solutions | June 2014 – February 2015

Role Summary

Senior systems administration role in a managed-services context, focused on customer infrastructure, cloud migration, network modernization, availability management, escalation support, and vendor coordination. This entry shows the bridge from hands-on operations to client-facing solution delivery.

• Designed and delivered migration of a large hosted Citrix environment to Office 365, including Exchange 2010 to Exchange Online, 2.5 TB of Windows file services to SharePoint Online, and Skype for Business for internal and external communication.
• Planned a comprehensive network overhaul for an engineering firm with six offices across five states, coordinating new ISPs, Cisco UCM voice, network hardware refresh, VPN, MPLS, and disaster-recovery services to reduce infrastructure fragility.
• Administered a VMware-based private cloud hosting VDI and sandbox environments for multiple software-development teams of 20-40 developers, preserving collaboration capacity for complex software work.
• Provided Tier 2 and Tier 3 escalation for service-desk resources and managed-services customers, translating recurring incidents into more durable fixes and clearer support paths.
• Implemented availability-management and disaster-recovery practices for customer environments, helping mission-critical systems stay online and aligned with SLA expectations.
• Coordinated client project plans, milestones, vendors, risks, and deliverables, giving internal leadership and customer stakeholders clearer visibility into active engagements.
• Managed build-out, quality assurance, and deployment of client project engagements, reducing handoff risk between design, implementation, and managed-services support.
• Reported project status, milestones, issues, risks, and deliverables to internal leadership, improving visibility into active customer work and enabling earlier escalation of delivery concerns.
• Conducted security assessments and implemented protective measures for customer environments, connecting infrastructure modernization to breach prevention and risk reduction.
• Secured Office 365 migration planning for Citrix-hosted customers, preserving identity, access, document integrity, and collaboration controls during the move from hosted Exchange and file services to Microsoft cloud services.