IT Systems Administrator

Atlantica Sustainable Infrastructure Plc; California (MO); On-site; USD 65,000 - 90,000; Full time

Job summary

Atlantica Sustainable Infrastructure Plc in the United States is seeking an IT Systems Administrator to join a global team and support core infrastructure. You will manage servers, virtualization, directory services, and end-user support across locations.

The role emphasizes deployment, security, and IT operations, including MS 365 apps, VoIP, backup, and network basics. 3+ years of experience and a Bachelor’s degree are preferred; certifications such as Security+, Network+, or CCNA are

Qualifications

• 3+ years of experience in a Systems Administrator, Network Administrator, or advanced Helpdesk role.
• Hands-on experience with hypervisors (VMware vSphere/ESXi or Microsoft Hyper-V).
• Solid understanding of TCP/IP, VLANs, and basic firewall routing/rules.
• Experience with imaging tools (MDT, SmartDeploy, or Acronis).

Responsibilities

• Infrastructure & Server Management
• Virtualization: Deploy, configure, and manage hypervisors and virtual machines (VMs).
• Directory Services: Administer the Active Directory Domain Controller, managing user accounts, permissions, and Group Policies.
• Storage: Maintain and secure file servers, ensuring proper data access controls and backups.
• Network, Security & Telephony: Switch configuration and monitoring; firewall rules; manage VoIP systems.
• Endpoint Management & End-User Support: OS imaging and end-user assistance.
• Software Support: Troubleshoot Microsoft 365 apps (Outlook, Teams, Word, Excel).

Skills

Analytical thinking

Communication

Problem solving

Organizational skills

Education

Bachelor’s degree in Computer Science, Telecommunications, Business Administration, or equivalent

Security+ / Network+ / CCNA

Tools

VMware vSphere/ESXi

Microsoft Hyper-V

MDT / SmartDeploy / Acronis

Active Directory

Microsoft 365

Job description

Join Our Team! We are currently recruiting a

Join Our Team! We are currently recruiting a IT Systems Administrator to join our team and contribute to key projects in a dynamic and collaborative environment. This role is part of a global team working toward common goals. We operate as one company, across all locations, with shared responsibility and clear accountability.

Key Responsibilities

• Infrastructure & Server Management
• Virtualization: Deploy, configure, and manage hypervisors and virtual machines (VMs).
• Directory Services: Administer the Active Directory Domain Controller, managing user accounts, permissions, and Group Policies.
• Storage: Maintain and secure file servers, ensuring proper data access controls and backups.
• Network, Security & Telephony
• Switching: Configure, monitor, and troubleshoot network switches to maintain optimal uptime.
• Firewall Administration: Implement basic rule changes, monitor logs, and maintain network security protocols.
• VoIP Systems: Manage the corporate VoIP phone system, including extension setups, call routing, and hardware provisioning.
• Endpoint Management & End-User Support
• Deployment: Create, update, and deploy standardized OS images onto company laptops and desktops.
• Helpdesk Support: Provide tier 1 and tier 2 technical assistance to local and remote end-users.
• Software Support: Troubleshoot Microsoft applications (Microsoft 365, Outlook, Teams, Word, Excel) and other productivity tools.

Education & Certifications

• Bachelor’s degree in Computer Science, Telecommunications, Business Administration, or equivalent
• Certifications: Security+, Network+, CCNA

Experience & Technical Skills

• Experience: 3+ years of experience in a Systems Administrator, Network Administrator, or advanced Helpdesk role.
• Virtualization: Hands-on experience with hypervisors (such as VMware vSphere/ESXi or Microsoft Hyper-V).
• Networking: Solid understanding of TCP/IP, VLANs, and basic firewall routing/rules.
• OS Deployment: Experience with imaging tools (like MDT, SmartDeploy, or Acronis).

Key Competencies

• Analytical and detail-focused.
• Strong organizational and communication skills.
• Able to manage competing priorities with accuracy.
• Proactive and adaptable.

Company Culture

We believe in a culture of trust, shared goals, and accountability. No matter where you are based, you are part of one team working toward the same mission.