System Administrator III (Onsite)

Lee County Tax Collector•Fort Myers, FL

5d•Onsite

About The Position

This role is based onsite in Fort Myers. The salary range for this position is $74,500.00 - $111,716.00, with starting salary dependent upon experience, qualifications, and relevant background. Are you a people-person who loves variety in your workday? Do you thrive on helping others, solving problems, and keeping things organized behind the scenes? We’re looking for a dynamic and resourceful Systems Administrator to join our team! In this role, you won’t be stuck doing just one thing — you’ll be at the heart of our Information Technology operations, handling a wide range of data networking responsibilities, including data switching, routing, firewalls, intrusion detection, intrusion prevention, and more. If you enjoy diving into different areas of technology and making a real impact on employees’ day-to-day experiences, this is the opportunity for you. Why Join Us? At our organization, we believe HR is more than policies and paperwork — it’s about people, purpose, and creating a workplace where everyone can thrive. As part of our HR team, you’ll have the chance to: Make a meaningful difference in employees’ lives Take ownership of impactful programs and projects Bring your ideas to the table — and see them in action Work with a supportive team that values collaboration, growth, and innovation If you're ready to bring your skills and experience to a place where they matter every day, we’d love to meet you.

Requirements

Bachelor's degree with major course work in Computer Science and five years’ work experience related to enterprise level computer system/network administration, management, or support; or equivalent combination of education, training, and experience as determined by ITS Management.
Background check required.
Valid Florida Driver's License required.
May require after hours, weekend or emergency (natural disaster, major incident, etc.) support.

Nice To Haves

Knowledge of Microsoft Windows client/server operating systems and Microsoft Active Directory desired.
Knowledge of Microsoft client and server patch management processes desired.
Knowledge and experience implementing disaster recovery solutions, with proven ability to perform failovers in high-availability environments.
Strong desire to learn and apply emerging technologies.

Responsibilities

Design, deploy, configure, and maintain enterprise network infrastructure supporting LAN, WAN, and data center environments
Administer and support Cisco routers, ensuring optimal performance, scalability, and security
Administer and support Extreme Networks switches, including VLANs, STP, and QoS
Manage and maintain Palo Alto Networks firewalls, including security policies, NAT, VPNs, and threat prevention features
Configure and manage advanced routing protocols, including BGP, OSPF, and static routing
Design and maintain failover routing, redundancy, and high-availability solutions
Implement and troubleshoot Layer 2 and Layer 3 technologies (VLANs, subnets, ACLs, IP addressing schemes)
Ensure efficient traffic flow and performance optimization across the network
Design, implement, and maintain WAN and LAN topologies across multiple sites
Manage site-to-site and remote connectivity solutions, including VPNs and secure tunnels
Coordinate with ISPs and vendors for circuit provisioning, performance issues, and outages
Enforce network security best practices and standards across all infrastructure
Monitor, analyze, and respond to security events and vulnerabilities
Ensure firewall rules, segmentation, and access controls align with organizational policies
Participate in audits and compliance initiatives as required
Proactively monitor network performance, availability, and capacity
Diagnose and resolve complex network issues across routing, switching, and firewall platforms
Perform root cause analysis and implement long-term corrective actions
Maintain network documentation, diagrams, and configurations
Design, test, and maintain disaster recovery and business continuity plans for network services
Implement redundancy and geographic failover solutions
Participate in DR testing, incident response, and post-incident reviews
Plan and execute network changes following change management processes
Maintain accurate and up-to-date documentation, including network diagrams and configuration standards
Develop and enforce operational procedures and best practices
Provide technical guidance and mentorship to junior network and systems staff
Collaborate with systems, security, and application teams on infrastructure initiatives
Evaluate and recommend new technologies, tools, and upgrades
Assist other Systems team personnel as needed with technology issues in Microsoft and AWS environments.