Systems Engineer 5 - Enterprise Network Architecture

NineFX is seeking a Systems Engineer V to serve as a senior technical authority for enterprise network architecture across large, mission-critical, and geographically distributed government environments. This role delivers advanced engineering, modernization, and integration expertise using Arista, Aruba, Plexxi, Dell, and F5 technologies, while ensuring compliance with STE/STN, STIG, and federal security mandates. The engineer leads complex projects, designs next-generation network architectures, supports multi-domain modernization efforts, and provides expert analytical guidance to senior government stakeholders., Advanced Network Engineering & Integration

• Design and oversee implementation of voice, data, and video communications systems across campus-wide and enterprise environments
• Develop customized, mission-aligned network designs that meet unique customer requirements while adhering to ITS and federal standards
• Engineer interconnections using Arista EOS platforms, Aruba wireless solutions, Plexxi fabrics, F5 load balancers, and Dell switching technologies
• Conduct advanced site surveys, gather technical requirements, and produce design specifications supporting installation, optimization, and troubleshooting
• Architect scalable networks supporting modernization efforts, high availability, and mission continuity

Security & Compliance

• Apply STE/STN requirements and STIG mandates throughout network design and operations
• Use Nessus Security Center to assess vulnerabilities, validate compliance, and support corrective-action workflows
• Support enforcement of network security policies, containment strategies, and secure operational practices
• Ensure designs meet federal cybersecurity expectations for highly sensitive environments

Network Monitoring & Performance Management

• Monitor and optimize network performance using CloudVision, MFNA (MicroFocus Network Automation), and WhatsUp Gold
• Diagnose and resolve complex network performance issues across distributed and international mission sites
• Track metrics, trends, and utilization to support capacity planning and strategic modernization efforts

Troubleshooting & Operations Support

• Resolve complex voice, data, and video issues across remote, multi-national, and cross-organizational environments
• Initiate critical actions to ensure network availability and mission stability during outages or performance impacts
• Coordinate outage notifications, incident response, and network recovery with partner organizations and external entities
• Troubleshoot multi-vendor interdependencies involving routing, switching, wireless, load balancing, and transport technologies

Leadership, Collaboration & Documentation

• Lead medium-to-large IT projects and major phases of enterprise modernization programs
• Collaborate with senior IT personnel, government leadership, vendors, and mission stakeholders to gather requirements and deliver solutions
• Produce and update network diagrams, engineering artifacts, operational procedures, and customer-facing materials
• Provide direction and mentorship to cross-functional engineering teams and contractors

Consulting & Analytical Support

• Deliver highly specialized guidance and forward-leaning solutions to complex network engineering challenges
• Conduct detailed technical analyses, produce executive-level reports, and brief government leadership
• Support enterprise modernization initiatives through requirements analysis, risk identification, and scalable architecture recommendations
• Manage project work as defined by government stakeholders and maintain alignment with mission priorities

• Active TS/SCI with Full Scope Polygraph (must already be held - no sponsorship)
• High School/GED + 20 years relevant experience
• Associate’s degree + 15 years
• Bachelor’s degree + 12 years
• Extensive experience with Arista, Aruba, Plexxi, Dell, F5, and enterprise monitoring tools (CloudVision, MFNA, WhatsUp Gold)
• Experience applying STIG, STE/STN, and vulnerability management practices using Nessus Security Center
• Proven ability to lead complex IT engineering projects and deliver specialized technical guidance