Senior Systems Administrator – Enterprise IT (On-Site)

Koitecc Solutions; Orlando (FL); On-site; USD 80,000 - 110,000; Full time

Job summary

Koitecc Solutions is seeking a Systems Administrator (Intermediate/Senior) to administer, maintain, secure, and optimize enterprise IT systems supporting mission-critical operations. The role oversees server infrastructure, virtualization, cloud technologies, Active Directory, Microsoft 365, backups, and cybersecurity compliance to ensure availability and performance.

The ideal candidate has DoD clearance, IAT Level II certification, 4+ years with Windows Server/AD/M365, and strong

Qualifications

• U.S. Citizenship with an active DoD Secret Clearance required.
• DoD 8570/8140 IAT Level II Certification (Security+ or equivalent).
• Minimum 4 years of experience supporting enterprise IT environments.

Responsibilities

• Install, configure, administer, and maintain server hardware, operating systems, software, and peripheral devices.
• Monitor system performance, availability, and health using enterprise monitoring tools.
• Perform patch management, configuration management, and system optimization.
• Administer Active Directory, Microsoft 365 services, messaging systems, clustering services, and System Center Management.
• Manage backup and recovery operations using enterprise backup solutions.
• Ensure servers, storage platforms, workstations, and software comply with security standards.
• Implement cybersecurity best practices and perform vulnerability remediation.
• Develop and maintain technical documentation, SOPs, and knowledge base resources.
• Support disaster recovery and business continuity planning.
• Maintain databases and mission-support systems.
• Assist with cloud migration and infrastructure modernization initiatives.
• Collaborate with networking, cybersecurity, engineering, and application teams to resolve technical issues.
• Provide technical support and guidance to users while promoting operational best practices.

Skills

Active Directory

Windows Server

Microsoft 365

Cybersecurity

Troubleshooting

Documentation

DoD 8570/8140 IAT Level II

Tools

NetBackup

Veeam

HPE StoreOnce

Job description

Koitecc Solutions is seeking a Systems Administrator (Intermediate/Senior) to administer, maintain, secure, and optimize enterprise IT systems supporting mission-critical operations. The role oversees server infrastructure, virtualization, cloud technologies, Active Directory, Microsoft 365, backups, and cybersecurity compliance to ensure availability and performance.

The ideal candidate has DoD clearance, IAT Level II certification, 4+ years with Windows Server/AD/M365, and strong