System and Network Administrator

Total Mortgage is seeking a highly skilled System & Network Administrator to support and manage our hybrid IT environment across on-premises infrastructure and cloud platforms. This role is responsible for maintaining reliable, secure, and efficient systems, with a strong emphasis on Ubiquiti UniFi networking, virtualization platforms, Windows/Linux systems, and Microsoft 365 / Entra ID / Azure. You will play a critical role in both day-to-day operations and long-term infrastructure improvements, working closely with internal teams and external vendors., * Manage and maintain Windows Server and Linux systems, including patching, performance tuning, and troubleshooting

• Administer virtual environments (VMware, Hyper-V, or similar), including provisioning, monitoring, and optimization
• Perform user and group management, permissions administration, and Group Policy configuration
• Install, configure, and maintain file shares, multi-user applications, and other networked resources

Network Administration (UniFi Focus)

• Design, configure, and manage Ubiquiti UniFi network infrastructure, including:

• Gateways, switches, and wireless access points
• VLANs, VPNs, and firewall rules

• Monitor network performance, availability, and security
• Troubleshoot connectivity issues across LAN/WAN environments
• Maintain routers, switches, firewalls, access points, printers, and VoIP systems

Cloud & Identity (Microsoft 365 / Azure / Entra)

• Administer Microsoft 365 services (Exchange Online, SharePoint, Teams)
• Manage Entra ID (Azure AD) including identity lifecycle, Conditional Access, and MFA
• Support Azure infrastructure and hybrid integrations
• Implement and maintain security controls including access policies and device compliance

Security, Compliance & Cybersecurity Auditing

• Perform and support cybersecurity and compliance audits across systems, networks, and cloud platforms
• Conduct and document disaster recovery (DR) planning and testing, including backup validation and recovery exercises
• Assist with or coordinate penetration testing and vulnerability assessments, ensuring timely remediation
• Monitor systems for adherence to security policies, standards, and regulatory requirements
• Participate in risk assessments and develop mitigation strategies
• Maintain audit documentation and provide evidence for internal/external reviews
• Support and improve security posture, identifying gaps and implementing corrective actions
• Assist in responding to security incidents, including account compromise or network intrusion

Support & Operations

• Provide Tier 2/3 technical support in coordination with helpdesk teams
• Troubleshoot complex issues across systems, networks, and cloud environments
• Partner with vendors for installations, upgrades, and escalations

Documentation & Continuous Improvement

• Create and maintain documentation including:

• Network diagrams and configurations
• System architecture and standard operating procedures

• Assist in infrastructure design, improvements, and scalability planning
• Research and recommend new technologies, tools, and best practices, This position may require frequent additional hours, at times on a daily basis; must be available to work additional hours on short notice as determined by management to meet customer service requirements.

Do you have experience in Windows support?, * 3+ years of experience in system and network administration

• Hands-on experience with Ubiquiti UniFi networking solutions
• Strong knowledge of:

• Windows Server environments
• Linux system administration
• Virtualization platforms (Xen, Hyper-V, or similar)

• Experience managing Microsoft 365 and Entra ID (Azure AD)
• Solid understanding of:

• Networking fundamentals (DNS, DHCP, VLANs, VPNs, routing)
• Security concepts and access control models

Preferred Qualifications

• Experience with Microsoft Azure (IaaS/PaaS)
• Familiarity with PowerShell, Bash, or other scripting/automation tools
• Experience with backup and disaster recovery solutions
• Knowledge of endpoint management (Intune or similar)
• Exposure to compliance frameworks such as SOC 2, NIST, or CIS benchmarks
• Relevant certifications (Microsoft, CompTIA, or networking certifications)

Key Skills

• Strong troubleshooting and analytical thinking skills
• Excellent documentation and organizational abilities
• Ability to manage multiple priorities in a fast-paced environment
• Clear communication with both technical and non-technical stakeholders