Senior System Administrator, L3 - Phaxis LLC

Senior System Administrator

Job Duties & Responsibilities

Design, install and configure internal and customer facing servers, network devices and firewalls.

Proactively manage and maintain server, network and firewall systems.

Administer and support core Microsoft, Cisco, SonicWall and HyperV technologies.

Develop and implement project plans, risk assessments and contingency plans.

Design and implement monitoring, configuration management and reporting functions that will make a hands-off environment.

Define and document best practices and support procedures.

Provide after-hours support for Infrastructure related emergencies as well occasional weekend maintenance.

Maintain inventory and asset configuration documentation.

Assist with hardware, firewall, telecom and software vendor evaluation, recommendation and negotiations

Mentor / train team members on existing and new technologies.

Carry out special tasks at Management's direction.

Interact with customers and staff at the technical level, as required.

Other duties as assigned.

Minimum Requirements

Bachelor's degree in computer science (or related area) preferred.

Advanced knowledge of Windows Server (2022-2025 / desktop Operating Systems (10/11)

Managing deployments/rollouts

Managing server virtualization technologies like VMWare Server or Microsoft HyperV/Virtual Server

A solid understanding of LAN/WAN networking

Cisco Certified Network Associate or Professional -CCNA/ CCNP MCITP Server

Group Policy design and configuration

Microsoft 365/Azure AD/Microsoft Entra

Linux/UNIX administration

Active Directory user and group administration

Ability to troubleshoot network issues including back bone infrastructure issues

LAN Routing and Switching design, configuration and troubleshooting (VLANs, IP Subnetting)

Strong communication and documentation skills

Must be organized and have the ability to manage projects of varying length

Positive, self-motivated individual who can complete tasks independently

Must be a team player

Ability to manage a team of helpdesk and field service members

Experience:

• Help desk: 7 years (Preferred)
• System administration: 5 years (Preferred)