Network Systems Administrator - Senior

The One 23 Group • Washington, United States • 3w ago

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of Defense, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.

Our expertise spans consulting and analytics, digital workplace solutions, and cyber compliance. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity.

The One 23 Group, a Virginia-based Government Contractor, seeks a Network Systems Administrator - Senior, local to the Washington, DC Metropolitan area.

Requirements

Develops, implements, and sustains network operating rules, objects, and flows across a complex, global enterprise.
Critically analyzes network infrastructure to find opportunities to improve efficiencies and reduce the threat profile.
Participate in audits covering network security services and technologies.
Architect, engineer, and troubleshoot Fortinet firewalls and services.
Configure and install network and security related hardware and software.
Open ticket with equipment manufacturers to ensure is running on the latest recommended release and patch.
Address critical, high, and medium/low security vulnerabilities within specified timeframe.
Implement, operate, configure, maintain, and replace equipment to include: LAN firewall, Site to Site VPN, LAN load balancer, DOJ’s VTC service, THUB network, Internal Proofpoint Mail Servers, and current monitoring systems (e.g., Cisco DNA, Cisco Prime, Live Action, and Xymon).
Deploy and maintain Zscaler related physical and virtual machines to include but not limited to: ZPA connectors; LSS connectors; NSS systems; Private Service Edges (ZPA & ZIA).
Configure policy for both ZPA and ZIA in the customer’s shared tenant.
Provide vulnerability mitigation. Improve data replication and failover.
Maintain and improve the required security devices (firewalls, etc.) between the current operational environment and Third-Party connections.
Execute business continuance and disaster recovery plans.
Research, design, and implement new technologies (i.e. Zero-Trust technologies), equipment (e.g., Fortigate and Cisco ISE).
Participate in on call rotation.

Qualifications:

8- 10 years experience providing LAN/WAN/Remote Access, Network Security, and/or Applications Support.
Experience providing LAN/WAN/Remote Access, Network Security, and/or Applications Support.
Experience and understanding of Cisco switching, routing, firewalls, Intrusion Detection System, and network management and monitoring including OPNET.
Experience an understanding of DNS, email, web, and file proxies.
Experience in analyzing network requirements, drafting project documentation, coordinating with customers, deploying system technologies, providing project reporting, project oversight, and projecting out-year network requirements.

Desired – possess at least one (1) of the following (or other relevant certification):