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Robert Half Systems Administrator in Jacksonville, Florida


Are you ready to take your career to the next level? We're looking for an experienced and highly skilled Senior Network/Systems Administrator to join our dynamic IT team. In this crucial role, you'll optimize our network and systems infrastructure while leading and mentoring junior team members.

Key Responsibilities:

  • Manage and administer Microsoft Windows Server environments, including Active Directory, DNS, DHCP, and Group Policy.

  • Design, implement, and maintain network infrastructure—routers, switches, firewalls, and VPNs—for optimal performance and security.

  • Monitor system performance, troubleshoot issues, and implement solutions to mitigate risks and improve efficiency.

  • Plan and execute server and network upgrades, patches, and migrations in line with best practices and industry standards.

  • Implement and maintain security measures to protect the organization's data and infrastructure from cyber threats and unauthorized access.

  • Perform regular backups and disaster recovery procedures to ensure data integrity and business continuity.

  • Provide timely technical support to end-users, troubleshooting hardware, software, and network issues.

  • Collaborate with IT team members and stakeholders to assess technology needs, recommend solutions, and implement new systems and technologies.

  • Document system configurations, network diagrams, and procedures to ensure knowledge sharing and regulatory compliance.

  • Stay informed about emerging technologies and best practices in system administration and network security, recommending updates and improvements.

  • Act as a point of escalation for complex technical issues.

If you have a strong background in both network and systems administration and a passion for mentoring and leading teams, we'd love to hear from you. Join us and help drive our IT success!



  • Bachelor's degree in Information Technology, Computer Science, or related field preferred.

  • 3+ years of experience in system administration and network management, preferably in a Microsoft environment.

  • Strong knowledge of Microsoft Windows Server operating systems (2008, 2012, 2016, 2019) and Active Directory administration.

  • Experience with network protocols, services, and technologies, including TCP/IP, DNS, DHCP, VLANs, and VPNs.

  • Proficiency in configuring and troubleshooting Cisco networking equipment and firewalls.

  • Familiarity with virtualization technologies such as VMware vSphere or Microsoft Hyper-V.

  • Experience with cloud services such as Microsoft Azure or Office 365 is a plus.

  • Excellent analytical, problem-solving, and communication skills, with the ability to work effectively in a team environment.

  • Industry certifications such as MCSA, MCSE, CCNA, or CompTIA Network+ are preferred.

  • Must be able to work independently, manage multiple projects simultaneously, and prioritize tasks effectively.

    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 for more information.

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