Network Administrator

Job Summary

Senior Network Administrator to provide advanced network administration and Tier III support for its enterprise network infrastructure. This is a senior-level position responsible for planning, designing, implementing, monitoring, maintaining, and optimizing data and voice network environments.

The successful candidate will work with existing network hardware and software, evaluate and implement network enhancements, and oversee the installation and maintenance of network infrastructure. The role requires a strong security-first mindset, technical expertise, independent judgment, and the ability to troubleshoot and resolve complex network issues with minimal supervision.

Key Responsibilities

• Perform highly complex and advanced network administration activities supporting OCA's network infrastructure.
• Plan, design, implement, monitor, and integrate data and voice network components.
• Administer and maintain existing network hardware, software, and related infrastructure.
• Evaluate current network environments and recommend potential network enhancements, upgrades, and improvements.
• Install, configure, maintain, and troubleshoot network hardware, software, and related components.
• Oversee the installation, configuration, and maintenance of network infrastructure performed by internal teams or vendors.
• Serve as Tier III technical support for complex network-related service requests and incidents.
• Diagnose and resolve advanced network connectivity, performance, configuration, and infrastructure issues.
• Monitor network performance, availability, capacity, and reliability.
• Assist with network infrastructure planning and technical architecture as required.
• Apply a security-first approach to network administration, configuration, troubleshooting, and infrastructure changes.
• Follow established IT security policies, standards, procedures, and best practices.
• Collaborate with other infrastructure, security, application, and IT support teams to resolve complex technical issues.
• Document network configurations, changes, troubleshooting activities, and technical procedures.
• Work independently with limited or minimal supervision while exercising considerable initiative and sound technical judgment.
• Participate in network-related projects, upgrades, migrations, and technology implementations.
• Identify opportunities for continuous improvement, automation, standardization, and optimization of the network environment.

Required Qualifications

• Demonstrated experience performing senior-level network administration in complex enterprise environments.
• Strong knowledge of data and voice networking technologies.
• Experience planning, designing, implementing, monitoring, and maintaining network infrastructure.
• Experience working with network hardware, software, and related infrastructure components.
• Strong troubleshooting and problem-solving skills, particularly in a Tier III support environment.
• Ability to work independently and make sound technical decisions with limited supervision.
• Strong understanding of network security principles and best practices.
• Strong communication, documentation, and collaboration skills.
• Ability and willingness to continuously learn and adopt emerging networking technologies.

Required Certification

• Candidate must hold at least one of the following certifications:
• CCNA – Cisco Certified Network Associate
• CCNP – Cisco Certified Network Professional
• CCIE – Cisco Certified Internetwork Expert

Preferred Qualifications

• Experience supporting government, public-sector, court, or other highly regulated environments.
• Experience with enterprise-scale network infrastructure.
• Experience providing Tier III network support.
• Experience with data center, WAN/LAN, wireless, or voice network environments.
• Experience with network monitoring, performance management, and troubleshooting tools.
• Experience working in security-sensitive environments.
• Candidates who are temp-to-hire eligible are preferred