Senior Network Administrator

Salary : $86,003.00 - $111,804.00 Annually
Location : City of Homestead, FL
Job Type: Full-Time
Job Number:
Department: Innovation & Technology Department
Opening Date: 10/28/2026
Closing Date: Continuous
FLSA: Exempt

General Function:

This is a senior level position in the Network Systems Administrator series and performs comprehensive support of complex network and server operating system environment. This position also performs a wide-range of network-related duties, including the design, implementation, and maintenance of a complex network.

Assignments include network design, disaster recovery planning, capacity planning, network security, complex server and network configuration, network administration and monitoring, troubleshooting and maintenance. Incumbents may also provide technical guidance to other IT professional staff.
Reports To:

Assistant Director of Innovation & Technology Department
Supervisory Responsibility:

None

Essential Duties and Responsibilities:

• Performs the more complex network and server administration functions, including configuring, installing, repairing, maintaining, and upgrading hardware and operating systems.
• Installs, customizes, configures, troubleshoots, tests and optimizes moderate to complex network software and physical infrastructure designs.
• Designs and implements network security solutions, including elements such as end user roles and groups, trust relationships, access rights, and directories.
• Performs VLAN configuration to support the installation and maintenance of services over Internet Protocol (IP) such as audio, video and data.
• Analyzes network resource utilization and implements solutions to correct problems to ensure all network applications are accessible and functioning properly.
• Identifies and recommends appropriate changes to network infrastructure to improve performance, reliability and availability.
• Develops and recommends procedures for network management, including resource allocation of centralized, decentralized and remote network services.
• Plans and installs hardware upgrades for network servers, gateways, and associated telecommunication devices.
• Identifies and resolves complex network problems; uses network management tools.
• Ensures network security according to policies and procedures and documents information security processes.
• Participates in or performs the selection, development, and implementation of backup and recovery solutions.
• Tracks network assets.
• Designs and maintains more complex network architecture, including hubs, routers and physical network.
• Conducts analysis and participates in implementation planning for new applications.
• Conducts analysis in support of data center planning.
• Provides in-depth support for information security incidents including internal violations, hacker attacks, viruses and system access.
• Researches and evaluates network and server hardware and software options and upgrades including updates, patches, and service packs.
• May lead a network support team.
• Upgrades network hardware and software components as required.
• Assists users having problems with the use of system software.
• Administers and monitors computer system that controls user access (System Security).
• Perform other related duties as assigned.

All of the above information is intended to indicate the general nature and level of work performed by employees in this position. This description is not intended to contain or be interpreted as a comprehensive inventory of all duties and qualifications required of employees assigned to this position. Duties, responsibilities, and activities may change at any time with or without notice.
Type of Appointment/Work hours:

• Full-time/Regular in-person position.
• Standard workweek, which is forty (40) hours of work per week usually consisting of five (5) days of eight (8) hours per day. The workday may be varied for the efficient delivery of public service.
• Will be required to work other than the standard workweek on occasion, including evenings, weekends, and/or holidays.
• Designated as essential personnel.

Requirements:

• Bachelor of Science degree from a four (4) year college or university in Computer Science, Information Systems or closely related field required.
• Five (5) years of related experience and/or training required.
• Ability to work with mathematical concepts such as probability and statistical inference. Ability to apply concepts such as fractions, percentages, ratios, and proportions to practical situations.
• Ability to define problems, collect data, establish facts, and draw valid conclusions. Ability to interpret an extensive variety of technical instructions in mathematical or diagram form and deal with abstract and concrete variables.
• Valid Florida driver's license with clean driving record.
• Must comply with the City's Drug-Free Workplace policy.
• Must pass a background screening/CJIS compliance process.

Specific Skills:

• Total working knowledge of:
  • Microsoft Windows Server.
  • Microsoft Windows Workstation.
  • Microsoft Office Program Suite.
  • PC Hardware assembly, troubleshooting, upgrading.
  • Data Base Management Systems (DBMS) design/development.
  • Design, installation, and configuration of videoconferencing solutions.
  • Windows Networking Environment (10/100/1000 Base-T Ethernet, etc.)
  • Microsoft Active Directory, Microsoft Exchange, DNS, DHCP, Web Server, IIS, etc.
  • Storage Area Networks (SAN)
  • Knowledge of Cisco Firewalls and switches (IOS, VLAN, Cisco's Unified Computing System)
  • Voice-Over-IP (VOIP)
  • Virtual Environments (HyperV, VMware)
  • Cybersecurity Products (NextGen Antivirus, Threat Detection and Response, etc.)
• Desirable:
  • Current MCSE and Cisco Certified.

Physical and Environmental Demands or Conditions:
The physical and environmental demands for this position have been listed on the last page of this description. Physical and environmental demands must be met to successfully perform the essential duties and responsibilities of this position.

Core Competencies:

• Judgment - Sound decisions based on fact; uses logic to solve problems.
• Quality of Work - Performs work thoroughly, accurately, and professionally.
• Reliability - Timely and consistently completes assigned work; consistently reports to work and is punctual.
• Safety - Committed to ensuring a safe environment and complies with applicable safety standards.
• Technical Capability - Applies knowledge to identify issues and works to develop skills; demonstrates knowledge of techniques, skills, and equipment.

Work Authorization/Security Clearance:

• The employee must successfully pass a background screening process and comply with the City's Drug-Free Workplace policy.
• The City will also verify the identity and employment authorization of individuals hired so the proper completion of Form I-9 is required, which includes the employee providing documents evidencing identity and employment authorization.

01

How many years of professional experience do you have in network administration, server administration, or closely related IT infrastructure roles?

• Less than 1 year of experience
• 1 to less than 3 years of experience
• 3 to less than 5 years of experience
• 5 to less than 7 years of experience
• 7 to less than 10 years of experience
• 10 or more years of experience
• No related experience

02

Which of the following certifications do you currently hold? Select all that apply.

• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)
• Microsoft Certified: Windows Server Hybrid Administrator Associate
• Microsoft Certified: Azure Administrator Associate
• Microsoft Certified Systems Engineer (MCSE), legacy credential
• CompTIA Network+
• CompTIA Security+
• Other relevant IT certification
• None of the above

03

Which of the following technologies have you professionally configured, administered, or maintained? Select all that apply.

• Microsoft Windows Server
• Microsoft Active Directory and Group Policy
• DNS and DHCP services
• Microsoft Exchange or Exchange Online
• Cisco switches and routers
• Cisco firewalls
• VMware virtualization
• Microsoft Hyper-V
• Storage Area Networks (SAN)
• Voice-over-IP (VoIP) systems
• Web servers or Microsoft IIS
• None of the above

04

Which of the following cybersecurity and disaster recovery responsibilities have you performed? Select all that apply.

• Implementing network security policies and access controls
• Managing endpoint protection or threat detection systems
• Investigating or responding to cybersecurity incidents
• Performing vulnerability assessments and security remediation
• Configuring and monitoring backup and recovery solutions
• Developing or testing disaster recovery procedures
• None of the above

05

Which statement best describes your level of professional experience with network and server infrastructure?

• I have independently designed, implemented, and managed complex network and server environments.
• I have independently administered network and server environments, including configuration, maintenance, and troubleshooting.
• I have supported network and server infrastructure under the guidance of senior IT personnel.
• My experience is primarily in desktop support, help desk operations, or basic IT troubleshooting.
• I have no professional network or server administration experience.

Required Question