Senior IT Network Administrator

Ardurra • Miami, FL

18h

About The Position

As part of our ongoing commitment to cybersecurity, Ardurra is seeking an experienced Senior IT Network Administrator to join our Florida team (flexible within regional offices throughout Florida). This mid-level position is designed for individuals with a solid foundation in IT security practices and a proven track record of safeguarding digital assets. The successful candidate will be responsible for enhancing our security measures, monitoring system vulnerabilities, and responding to security incidents with efficiency and precision. About Ardurra: Ardurra is a rapidly growing multidisciplinary civil-engineering services firm specializing in water/wastewater, transportation, public works, and many other engineering services. We take pride in delivering innovative, sustainable, and client-focused solutions that improve infrastructure and the communities we serve. At Ardurra, we foster a culture of collaboration, professional development, and integrity. Position Summary: Ardurra is seeking a detail-oriented and proactive IT Network Administrator to support the Ardurra national network infrastructure. This individual will be responsible for maintaining and optimizing the performance, security, and reliability of Ardurra’s network infrastructure and related IT systems. The ideal candidate will have strong technical skills, a passion for problem-solving, and experience working in a multi-site environment.

Requirements

• Associate’s or Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent work experience).
• Minimum 3–5 years of experience in network/system administration in a multi-office 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).

Nice To Haves

• CompTIA Network+ or Security+
• Cisco Certified Network Associate (CCNA)
• Microsoft Certified: Azure Administrator Associate or similar

Responsibilities

• Manage, maintain, and monitor LAN/WAN infrastructure, Fortinet firewalls, switches, routers, and Fortinet wireless systems across all Ardurra offices ensuring optimal performance and security – Assess and recommend improvements for firewall management.
• Install, configure, and support network equipment including servers, VPN configuration, and other hardware/software as needed.
• Manage and support the Zscaler platform and provide support as required.
• Implement Zero Trust Network Access (ZTNA) solutions, with a focus on Zscaler as a key security tool.
• Develop, configure, and manage VLANs across all locations to maintain network segmentation and security.
• 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, including switches, firewalls, desktop, servers, access points and remote access.
• Monitor network performance and resource usage; generate and maintain performance reports.
• Assist with disaster recovery planning, data backup solutions, and business continuity efforts.
• Act as a strategic advisor to the CIO, articulating best practices, proposed solutions, and future network strategies.
• 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.

Benefits

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Associate degree