System Administrator; hybrid

GuideIT is a US based technology services company focused on providing value to its customers through technology alignment and optimization. We are currently looking for a System Administrator to join our team.

• Administer, maintain, and support server and cloud infrastructure as directed by the client’s designated lead.
• Provide services focused on systems build-out, documentation, support, and new environment and site deployments.
• Deploy, configure, and maintain infrastructure and platform services, including but not limited to:
• Windows Server, Active Directory, DNS, DHCP, Group Policy, and file and print services.
• AWS compute, storage, networking, and identity services (EC2, S3, EBS, VPC, IAM, Route 53, Cloud Watch).
• Azure IaaS, Entra , and hybrid identity and directory synchronization.
• Microsoft 365 workloads, including Exchange Online, SharePoint Online, One Drive, Teams, and Intune.
• Supporting network services such as VPNs, load balancers, and firewall policy changes.
• Perform system maintenance and upgrades, including applying service packs, patches, hot fixes, and security baselines across on-premises and cloud estates.
• Monitor system, platform, and network performance to ensure availability and reliability.
• Conduct resource monitoring, trending, and capacity planning across server, storage, and cloud workloads, including cloud cost and consumption review.
• Administer backup, replication, and disaster recovery processes, and participate in periodic restore testing.
• Automate recurring administrative tasks using Power Shell, Bash, or comparable scripting and infrastructure-as-code tooling.
• Adhere to established configuration and change management policies, ensuring all changes are reviewed, approved, and successfully implemented.
• Collaborate with the company’s security team to select and implement security tools, policies, and procedures, including identity, endpoint, and cloud posture controls.
• Provide escalation-level technical support for system, cloud, and network-related issues within strict SLA windows.
• Mentor junior administrators and support staff, and contribute to runbooks, standards, and knowledge base documentation.

• 5+ years of hands-on system administration experience in enterprise or managed services environments.
• Expertise in Windows Server administration, including Active Directory, Group Policy, DNS, DHCP, certificate services, and MFA.
• Hands-on experience administering AWS infrastructure (EC2, S3, VPC, IAM, Route 53, Cloud Watch), with secondary working knowledge of Microsoft Azure.
• Proficiency administering Microsoft 365, including Exchange Online, SharePoint Online, One Drive, Teams, Intune, and Entra  (Azure Active Directory).
• Working knowledge of networking technologies, including routers, switches, and firewalls (Cisco, Meraki, Palo Alto).
• Understanding of routing, switching, and VPN technologies, as well as TCP/IP, DNS, DHCP, SMTP, IMAP, POP3, and other communication protocols.
• Experience using Power Shell or other scripting tools to improve administrative efficiency.
• Experience with virtualization platforms such as VMware vSphere or Hyper‑V.
• Strong familiarity with ITIL standards and maintaining compliance in regulated environments.
• Knowledge of ticketing systems with a proven ability to manage and resolve tickets promptly.
• Strong communication and interpersonal skills, with the ability to interact effectively across teams and clients.
• Availability to participate in an on‑call rotation and to perform maintenance during scheduled after‑hours windows.
• Authorized to work in the US, with occasional travel estimated at 25% to customer locations as needed.

• Microsoft certification such as AZ‑104 (Azure Administrator Associate) or MS‑102 (Microsoft…