Network Engineer - Cisco NextGen Firewalls (TS/SCI with Poly Required)

About GCI

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high‑value mission solutions while effectively leveraging the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry. At GCI, we solve the hard problems.

Qualifications

• Bachelor’s Degree in Computer Science or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.
• Minimum ten (10) years of relevant experience (additional experience may be substituted for a degree) with architecting and designing IP networks and associated technologies.

Required Knowledge and Skills

• In‑depth understanding of networking, including routing, switching, network monitoring and management.
• Strong troubleshooting skills specific to network connectivity and security, with the ability to work in cross‑functional teams to resolve issues.
• Expertise in SDN engagements built around Cisco ACI.
• Background in Cisco ACI design, planning, implementation, and testing for multi‑data‑center configurations.
• Good team and collaboration skills.
• Ability to research and adopt innovative technologies to enhance existing networks.
• Define network strategy with respect to technology domain standards and design goals.
• Provide technical design and architectural leadership, including documenting and diagramming logical, physical, and process views.
• Experience analyzing network traffic with various tools to assess security‑related events and assist in rapid identification and isolation of issues during incidents and outages.
• Experience designing, configuring, implementing, and troubleshooting a wide range of network technologies and protocols.
• Experience designing, deploying, and maintaining boundary security solutions and exposure to enterprise network architecture.
• Good knowledge and hands‑on experience with VXLAN/EVPN.

Desired Knowledge and Skills

• Experience with Network Access Control and segmentation.
• Experience with security compliance standards.
• Experience with site‑to‑site VPNs and/or remote‑access VPNs.
• Network programmability for automating tasks (Ansible, Puppet, Chef, Python, REST APIs).
• Experience with data‑center and co‑location solutions as they relate to SDN architecture and NextGen firewall technologies.
• Experience configuring/administrating various network technologies including Cisco ACI, Cisco DCNM, OTV, VMware NSX.
• Demonstrated experience designing and implementing network reference architecture from mission requirements gathering to technology rollout oversight, including capacity management, technology selection, integration of multiple tools, and technical documentation.
• Familiarity with software‑defined networking (SDN) and network disaggregation technologies and methodologies, including open‑source solutions.
• Ability to brief complex information to senior leadership.
• Drive enhancements through the full life‑cycle from concept to final implementation and support.

Key Responsibilities

• Installation and maintenance of network equipment.
• Troubleshooting and resolution of network issues.
• Design network architectures based on customer requirements and industry best practices.
• Develop unique solutions that meet customer requirements and industry best practices.
• Collaborate effectively with other IT disciplines (e.g., Storage, Platform, Application) to troubleshoot and resolve complex problems.
• Develop and maintain configuration plans for Cisco ACI design, planning, implementation, and testing across multi‑data‑center environments.
• Create architectural design solutions and present them to client stakeholders.
• Work with infrastructure engineers to identify new products and solutions.
• Document maintenance for all computer systems and network infrastructure.
• Maintain systems and documentation as needed for audits and compliance.
• Communicate with customers—keeping them informed of incident progress, notifying of impending changes, or coordinating outages.
• Provide mentorship and coaching to other engineers to achieve resolution.
• Participate in 24×7 on‑call rotation and assist in resolving issues outside normal business hours.

Security Clearance

A candidate must be a U.S. citizen and possess an active/current TS/SCI with Polygraph clearance.