Senior IT Systems & Cloud Operations Engineer

Concero; Chesterfield (MO); On-site; USD 85,000 - 120,000; Full time

Job summary

Concero is seeking a Systems Administrator, IT Operations, to oversee enterprise infrastructure across Windows Server environments, AD/Group Policy, virtualization, and cloud services. You will help drive modernization initiatives and partner with cross-functional teams to deliver secure, scalable technology solutions.

The role emphasizes reliability, security, and continuous improvement, with responsibility for upgrades, DR planning, on-call support, and collaboration with help desk and

Qualifications

• 7+ years of progressive Systems Administration or Infrastructure Engineering experience.
• Experience supporting enterprise environments across multiple locations.
• Strong communication and customer-service mindset.

Responsibilities

• Administer and support Windows Server environments.
• Manage Active Directory, Group Policy, DNS, DHCP, and domain services.
• Maintain VMware vSphere and related virtualization platforms.
• Monitor server performance, capacity planning, and uptime.
• Implement disaster recovery and business continuity solutions.
• Perform patching, upgrades, and lifecycle management.
• Administer Microsoft 365 services (Exchange Online, Teams, SharePoint, OneDrive).
• Support Entra ID administration, identity governance, and conditional access.
• Participate in cloud adoption and modernization initiatives.
• Handle user provisioning, licensing, and RBAC.
• Storage administration for enterprise storage (Pure Storage); monitor health and capacity.
• Document procedures, architecture, standards, and support knowledge.
• Provide Tier III escalation when needed; collaborate with IT teams.

Skills

VMware vSphere

Microsoft 365 Administration

Windows Server Administration

Active Directory & Group Policy

DNS & DHCP

Education

Bachelor's Degree in Computer Science or related

Tools

Pure Storage

Backup & DR Solutions

PowerShell

Job description

Concero is seeking a Systems Administrator, IT Operations, to oversee enterprise infrastructure across Windows Server environments, AD/Group Policy, virtualization, and cloud services. You will help drive modernization initiatives and partner with cross-functional teams to deliver secure, scalable technology solutions.

The role emphasizes reliability, security, and continuous improvement, with responsibility for upgrades, DR planning, on-call support, and collaboration with help desk and