Network Security Administrator

We are looking for a Network Security Administrator to support and strengthen a company’s infrastructure, cybersecurity practices, and secure use of emerging AI technologies in Boca Raton, Florida. This Long-term Contract position is ideal for someone who can take ownership of network and security operations, work effectively in a small IT environment, and contribute practical guidance with minimal oversight. The role also includes partnering with internal IT staff to improve system reliability, protect business data, and provide occasional end-user technical support when needed. Responsibilities: • Manage and troubleshoot core network operations, including administration of Ubiquiti-based infrastructure to maintain performance, availability, and security. • Improve protection across network environments, user endpoints, hosted systems, and Microsoft 365 by identifying vulnerabilities and applying appropriate security measures. • Review business use of AI platforms such as Claude, ChatGPT, and Microsoft Copilot, then help define secure settings, access practices, and usage guardrails. • Provide focused oversight for the secure rollout and ongoing administration of Claude, with attention to data exposure risks and operational controls. • Support Microsoft 365 administration in coordination with other IT team members, including identity, access, and security-related functions. • Maintain and support two remotely hosted servers along with the applications they run, ensuring stability and timely issue resolution. • Analyze the current technology landscape, identify operational or security gaps, and present actionable improvement recommendations to leadership. • Assist with initiatives involving movement from hosted applications to cloud-based services while helping reduce risk during implementation. • Work closely with help desk and Intune support personnel to resolve technical issues and deliver reliable service to internal users. • Create and update technical documentation covering configurations, procedures, support processes, and infrastructure changes. • Proven background in network administration and cybersecurity within a business environment. • Ability to independently diagnose infrastructure issues, manage priorities, and implement effective technical solutions. • Practical knowledge of AI tools and the security considerations involved in deploying them for organizational use. • Experience administering and securing Microsoft 365, including related identity and endpoint management technologies. • Working understanding of server support and remotely hosted infrastructure. • Capability to balance infrastructure responsibilities with occasional hands-on support for end-user equipment and workplace technology. • Strong communication skills with the ability to explain risks, recommendations, and technical decisions to non-technical stakeholders. • Availability to work fully onsite in Boca Raton, Florida. Technology Doesn't Change the World, People Do.® Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice.