Demo

Systems Administrator / Infrastructure Support Engineer

Krostech Solutions, LLC
Houston, TX Full Time
POSTED ON 7/20/2026
AVAILABLE BEFORE 8/19/2026

Key Responsibilities

  • Administer and support Microsoft 365 environments including Exchange Online, Teams, SharePoint, OneDrive, Entra ID, and Intune.
  • Manage and support VMware ESXi and vCenter environments.
  • Configure, maintain, and troubleshoot network infrastructure including switches, VLANs, wireless networks, and connectivity issues.
  • Support firewall administration and security technologies.
  • Deploy, configure, and support Windows desktops, laptops, mobile devices, and peripherals.
  • Manage user provisioning, onboarding, offboarding, access control, and endpoint security.
  • Monitor infrastructure performance and assist with system maintenance, upgrades, and troubleshooting.
  • Collaborate with infrastructure, networking, and security teams to resolve complex technical issues.
  • Maintain documentation, asset records, and operational procedures.

Required Qualifications

  • 3 years of Systems Administration, Infrastructure Support, or Network Administration experience.
  • Hands-on experience with VMware ESXi and/or vCenter.
  • Experience supporting Microsoft 365, Entra ID (Azure AD), Intune, and Active Directory environments.
  • Experience configuring and troubleshooting enterprise networking environments.
  • Strong understanding of TCP/IP, DNS, DHCP, VLANs, VPNs, and routing concepts.
  • Experience supporting Windows desktop and server environments.
  • Strong troubleshooting and customer-facing communication skills.

Preferred Qualifications

  • Experience with Palo Alto, Fortinet, Cisco, Aruba, or similar enterprise firewall platforms.
  • Experience configuring Cisco, Aruba, Dell, HP, or Meraki switches.
  • Experience with ConnectWise, ServiceNow, or similar ITSM platforms.
  • Experience supporting macOS environments.
  • Industry certifications such as VMware, Microsoft, Cisco, CompTIA, or related technologies.

Salary : $60,000 - $80,000

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