Network Admin

Dexian; Atlanta (GA); On-site; USD 90,000 - 130,000; Full time

Job summary

Dexian is seeking a highly experienced Network Administrator in Atlanta, GA to manage VOIP, Cisco IP Phones with ISE, and the organization's network infrastructure.

The role requires ensuring reliable network performance, security, and supporting complex environments; candidates should have 7–10 years of experience and CCNP or similar certification preferred.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent professional experience.
• 7–10 years of experience in network administration, including at least 2 years managing VOIP systems.
• Proven experience designing and maintaining complex network environments.
• Strong knowledge of TCP/IP, DNS, DHCP, BGP, and OSPF.
• Hands-on experience with Cisco or Juniper hardware and related systems.
• Security best practices and tools including firewalls, IDS/IPS, and VPNs; CCNP/Network+ or CISSP preferred.

Responsibilities

• Design, deploy, and oversee network infrastructure including LAN, WAN, VPN, and wireless networks.
• Configure and monitor VOIP systems, specifically Cisco IP Phones with security integration.
• Develop network solutions aligned with organizational strategic objectives.
• Assess and recommend new networking technologies to enhance efficiency.
• Monitor network performance and troubleshoot issues to minimize downtime.
• Execute routine maintenance tasks such as firmware updates and hardware replacements.
• Provide technical support to resolve outages and issues.

Skills

VOIP administration

Cisco networking

Network security

TCP/IP DNS DHCP

WAN LAN Wireless

Troubleshooting

Education

Bachelor's degree in CS/IT or related

Tools

Cisco IOS

Cisco ISE

Firewalls

IDS/IPS

Job description

Candidates must be able to work 5 days on site in Atlanta, GA Position Summary

We are looking for a highly experienced Network Administrator to join our IT team. The ideal candidate will be responsible for managing VOIP systems, Cisco IP Phone solutions with ISE, and maintaining the organization's overall network infrastructure. This role requires offering reliable network performance, ensuring security, and supporting complex network environments. Candidates should have a strong foundation in networking technologies, problem-solving skills, and a proactive approach to network management.

Key Responsibilities

• Design, deploy, and oversee network infrastructure including LAN, WAN, VPN, and wireless networks
• Configure and monitor VOIP systems, specifically Cisco IP Phones with security integration
• Develop network solutions aligned with organizational strategic objectives
• Assess and recommend new networking technologies to enhance operational efficiency

Network Maintenance and Support

• Monitor network performance and troubleshoot issues to minimize downtime
• Execute routine maintenance tasks such as firmware updates, patches, and hardware replacements
• Provide prompt technical support to resolve network outages and issues

Security Management

• Implement and oversee network security measures including firewalls, intrusion detection/prevention systems, and encryption protocols
• Conduct regular vulnerability scans and security assessments
• Develop and enforce policies to protect data and network resources

Network Optimization

• Analyze traffic and performance data to identify bottlenecks and optimization opportunities
• Fine-tune network configurations and implement QoS policies for efficient data flow
• Collaborate with other IT teams to optimise network-related functionalities of applications and services

Documentation and Reporting

• Maintain detailed records of network configurations, changes, and operational procedures
• Prepare regular reports on network performance, security, and maintenance activities
• Create and update disaster recovery and business continuity plans for network resilience

Team Leadership and Collaboration

• Mentor junior network staff and provide technical guidance
• Work with cross-functional teams such as system administrators, developers, and security professionals to support projects
• Participate in planning and executing infrastructure upgrades and enhancements

Required Qualifications

• Bachelor's degree in computer science, Information Technology, or related field, or equivalent professional experience
• 7 to 10 years of experience in network administration, including a minimum of 2 years managing VOIP systems
• Proven success in designing and maintaining complex network environments
• Strong knowledge of networking protocols such as TCP/IP, DNS, DHCP, BGP, and OSPF
• Hands-on experience with network hardware from vendors like Cisco, Juniper, or similar
• Deep understanding of network security best practices and tools such as firewalls, IDS/IPS, and VPNs
• Familiarity with wireless networking technologies and management
• Professional certifications such as CCNP, Network+, or CISSP are highly preferred

Preferred Qualifications

• Relevant industry certifications (e.g., CCNP, Network+, CISSP)
• Experience with enterprise-grade network hardware and security tools
• Demonstrated leadership or mentorship capabilities
• Ability to successfully prioritize and manage multiple projects in a dynamic environment

Why This Opportunity May Be Appealing

This role offers the chance to work in a challenging and technologically advanced environment, supporting critical network operations. You will collaborate with a talented team and contribute to the ongoing security and efficiency of the organization's infrastructure. The position provides opportunities for professional growth and involvement in impactful IT projects that support the organization's mission.

Dexian stands at the forefront of Talent + Technology solutions with a presence spanning more than 70 locations worldwide and a team exceeding 10,000 professionals. As one of the largest technology and professional staffing companies and one of the largest minority-owned staffing companies in the United States, Dexian combines over 30 years of industry expertise with cutting-edge technologies to deliver comprehensive global services and support. Dexian connects the right talent and the right technology with the right organizations to deliver trajectory-changing results that help everyone achieve their ambitions and goals. To learn more, please visit https://dexian.com/. Dexian is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, sexual orientation, gender identity, age, national origin, ancestry, citizenship, disability, or veteran status.