System Administrator

System AdministratorGA Telesis is a global leader providing integrated solutions to the aviation and aerospace industries, with a continuously expanding presence in new countries worldwide. We serve over 2,000 customers, including airlines, original equipment manufacturers, maintenance, repair, and overhaul (MRO) providers. GA Telesis Ecosystem™ is a vast global network spanning 54 locations in 30 countries on six continents. At GA Telesis, our core business is integrated aviation solutions, and our mission is customer success.Reporting to the Vice President of IT, the Information Technology team is seeking a System Administrator who takes initiative, demonstrates a strong willingness to learn, and is committed to providing high-quality technical support. This role is responsible for supporting, maintaining, and improving the organization's IT infrastructure, including servers, Microsoft 365 services, identity systems, endpoint management tools, backups, network services, and related business systems. The position provides hands-on technical administration, serves as an escalation point for complex support issues, assists with infrastructure projects, performs routine maintenance, and helps ensure systems remain secure, reliable, and properly documented. This role is based on-site in Fort Lauderdale, FL. Important Notice: Eligibility Requirement: Only U.S. Citizens or Permanent Residents will be considered for this position.Responsibilities:Administer and support Windows Server, Active Directory, Group Policy, DNS, DHCP, file/print services, and other core infrastructure systems.Manage user accounts, groups, permissions, licenses, access controls, and authentication settings across on-premises and cloud platforms.Support Microsoft 365 services, including Exchange Online, SharePoint, OneDrive, Teams, Entra ID, Intune, and related administration.Deploy, configure, patch, monitor, and troubleshoot servers, virtual machines, storage resources, endpoints, and enterprise applications.Assist with virtualization administration using platforms such as VMware, Hyper-V, or Nutanix, including provisioning, monitoring, snapshots, and basic capacity review.Monitor system health, performance, availability, backup status, and security alerts; respond to issues and escalate when appropriate.Support backup, recovery, retention, disaster recovery, patch management, and approved change management processes.Troubleshoot escalated hardware, software, network, application, identity, endpoint, and connectivity issues.Support network services and infrastructure components, including switches, routers, firewalls, VPN, wireless, IP addressing, DNS, DHCP, and routing.Assist with endpoint management, software deployment, device configuration, patch compliance, and security baseline enforcement.Support infrastructure security controls, including MFA, access reviews, least-privilege permissions, audit logging, antivirus/EDR tools, vulnerability remediation, and secure configuration standards.Maintain documentation for system configurations, procedures, inventories, licensing, service accounts, diagrams, and support processes.Use PowerShell, scripts, templates, or approved automation methods to improve repeatable administrative tasks.Participate in infrastructure projects, upgrades, migrations, deployments, audits, and technology improvement initiatives.Coordinate with IT leadership, senior administrators, support teams, vendors, and business stakeholders to resolve issues and improve service reliability.Required Qualifications:Minimum of 3 to 5 years of experience in systems administration, infrastructure support, network administration, desktop engineering, or a related IT role.Hands-on experience supporting Windows Server, Active Directory, Group Policy, DNS, DHCP, file services, print services, and enterprise authentication systems.Experience administering or supporting Microsoft 365 services such as Exchange Online, SharePoint, OneDrive, Teams, Entra ID, and Intune.Working knowledge of virtualization technologies such as VMware, Hyper-V, or Nutanix.Understanding of networking fundamentals, including TCP/IP, VLANs, routing, switching, firewalls, VPN, wireless, DNS, and DHCP.Experience with backup, disaster recovery, patch management, system monitoring, endpoint management, and security tools.Ability to troubleshoot moderately complex to complex technical issues, prioritize assigned work, and communicate clearly with technical and non-technical users.Strong documentation habits and ability to create clear procedures, technical notes, diagrams, and knowledge base articles.Preferred Qualifications:Associate's or bachelor's degree in Information Technology, Computer Science, Cybersecurity, or a related field, or equivalent work experience.Relevant mid-level certifications such as Microsoft, CompTIA Network+, CompTIA Security+, VMware, Cisco, Azure, or related technical certifications.Experience with PowerShell scripting, automation, cloud administration, security hardening, compliance support, IT audits, or infrastructure project support.Experience supporting multi-site, hybrid, or distributed user environments.Required Skills and CompetenciesStrong analytical, troubleshooting, and problem-solving skills.Ability to manage multiple priorities, follow up on open issues, and complete assigned work in a timely manner.Strong customer service mindset with the ability to support users professionally and effectively.Excellent written and verbal communication skills.Ability to work independently, collaborate with team members, and follow established policies, procedures, and escalation paths.High attention to detail, especially when performing changes that affect production systems, security, or business continuity.Work Expectations:May be required to participate in scheduled maintenance windows, after-hours support, or on-call rotations as needed.Must follow company IT policies, cybersecurity standards, change management procedures, and confidentiality requirements.Must be able to work collaboratively with internal teams, external vendors, and business stakeholders to support operational goals. GA Telesis