IT Network Administrator

Ardurra; Miami, Northern (FL, KY); Hybrid; USD 85,000 - 105,000; Full time

Job summary

Ardurra is seeking an IT Network Administrator to join our Corporate IT team in Miami, FL. You will manage and secure our nationwide LAN/WAN, Fortinet firewalls, VLANs, VPNs, and Zscaler deployments to support 100+ offices.

The role requires 5–10 years of enterprise network experience, strong collaboration with CIO and third‑party providers, and occasional travel to other Ardurra offices. Competitive benefits and a stable, growth‑focused environment.

Qualifications

• 5–10 years in network/system administration in multi-site enterprise.
• Experience with Windows Server, AD, DNS/DHCP, Office 365, VPN, and RDP.
• Fortinet, Zscaler, and security best practices familiarity.

Responsibilities

• Manage LAN/WAN infrastructure, Fortinet firewalls, switches, routers, and wireless.
• Install, configure, and support network equipment including VPNs.
• Administer Zscaler platform and implement ZTNA.
• Develop VLANs and network segmentation.
• Collaborate with CIO and outsourced providers on architecture.
• Provide on-call support and disaster recovery coordination.

Skills

Network administration

Multi-site env

Communication

Customer service

Project management

Education

Associate or Bachelor degree

Tools

Fortinet

Azure AD

Office 365

Zscaler

VPN

Job description

Ardurrais seeking an experiencedIT Network Administratorto join our internal IT team inMiami, FL.

Ardurra is a rapidly growing multidisciplinary civil engineering firm with more than 2,600 employees across 100+ offices nationwide. Our Corporate IT team supports the technology infrastructure that enables our engineers and business teams to deliver critical infrastructure projects throughout the United States.

Primary Function

This role is ideal for an experienced Network Administrator with a strong background in enterprise networking, infrastructure, and security. As a member of our Corporate IT team, you'll help maintain and enhance Ardurra's nationwide network environment, ensuring the performance, reliability, and security of enterprise systems supporting more than 100 office locations.

The ideal candidate is a proactive problem-solver with experience managing multi-site network environments and a passion for delivering secure, reliable technology solutions.

Key Responsibilities:

• Manage, maintain, and monitor LAN/WAN infrastructure, Fortinet firewalls, switches, routers, and wireless systems across all Ardurra offices, ensuring optimal performance and security. Assess and recommend improvements to firewall management.
• Install, configure, and support network equipment including servers, VPN configuration, and other hardware/software as needed.
• Administer and support the Zscaler platform, including implementing and maintaining Zero Trust Network Access (ZTNA) solutions.
• Develop, configure, and manage VLANs across all locations to maintain network segmentation and security.
• Act as a strategic advisor to the CIO, articulating best practices, proposed solutions, and future network strategies.
• Collaborate with outsourced network service providers to align on architecture, configurations, and ongoing projects.
• Lead network design and architecture discussions, providing actionable recommendations to improve network efficiency and security.
• Perform hands‑on firewall and switch configurations, system monitoring, and troubleshooting, ensuring minimal downtime and swift resolution.
• Collaborate with the IT security administrator to implement security best practices, patch management, and system updates.
• Provide support to all offices with network‑related issues involving switches, firewalls, servers, access points, remote access, and related infrastructure.
• Monitor network performance and resource usage; generate and maintain performance reports.
• Assist with disaster recovery planning, data backup solutions, and business continuity efforts.
• Ensure centralized network management and uniform security policies across all locations.
• Maintain documentation related to network infrastructure, configurations, and IT procedures.
• Evaluate and recommend hardware and software upgrades in alignment with company standards.
• Provide on‑call support as needed for critical issues outside normal business hours.

Qualifications:

• Associate’s or Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent work experience).
• 5-10 years of network and/or systems administration experience in a multi‑site enterprise environment.
• Proficiency with Windows Server, Active Directory, Azure Active Directory, DNS/DHCP, Office 365, and remote access tools (VPN, RDP).
• Hands‑on experience with Fortinet networking equipment, firewalls, and cloud VoIP systems.
• Hands‑on experience implementing and managing Zscaler.
• Strong knowledge of network protocols, troubleshooting tools, network design and device management.
• Familiarity with cybersecurity principles and best practices.
• Excellent communication, customer service, organizational, analytical and project management skills. Ability to communicate complex technical concepts to both technical and non‑technical stakeholders.
• Ability to travel to various Ardurra offices on occasion (valid driver's license required).

Preferred Certifications:

• CompTIA Network+ or Security+

Why Ardurra?

While Ardurra offers competitive compensation and rich benefits programs, it is our culture that truly sets us apart from our peers. We nurture a family‑like culture, striving to create a work environment that is enjoyable, challenging and rewarding but also fun. We are acutely focused on developing our staff, whether through our internal Ardurra Academy or through our industry‑leading Leadership program. We have made a deliberate and focused commitment to nurture a people‑centric culture where people are: valued as individuals; supported in their professional and career development with multiple, varied career paths; provided the tools and resources to be successful, engaged, and satisfied in their work; and positive benefits, time‑off programs, and flexibility to help maintain a healthy balance between work and home.
Ardurra is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, gender identity or sexual orientation.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.