Network Administrator responsible for efficient LAN/WAN/VPN operations at Northrop Grumman. Requires Top Secret clearance and experience with Cisco networking equipment.
About the role
- Network Specialist on Network team responsible for enterprise network performance and stability. Driving network design, automation, and operational excellence across varied environments.
Responsibilities
- Provide high-level technical expertise to support network operations across LAN, WAN, data center, campus, and cloud environments.
- Design, implement, and support Cisco enterprise routing (BGP, EIGRP) and switching, including Cisco Catalyst and 9k series platforms.
- Architect, deploy, and operate Cisco ACI (single site and multisite), including Nexus Dashboard and Nexus Dashboard Orchestrator.
- Lead enterprise wireless design and operations leveraging Cisco APs and 9300 series wireless controllers; optimize coverage, capacity, and performance.
- Operate and enhance Cisco Catalyst Center for network assurance, automation, and lifecycle management.
- Implement and administer Cisco Identity Services Engine (ISE) for TACACS+, RADIUS, and 802.1X network access control across wired and wireless.
- Manage Infoblox DDI services (DNS, DHCP, IPAM) and integrate with network provisioning workflows.
- Provide guidance and best practices for networking in major cloud platforms (GCP, AWS, Azure), including hybrid connectivity, routing, and segmentation.
- Design, implement, and optimize application delivery and load balancing solutions using NetScaler ADC or F5 BIG-IP (or similar), ensuring high availability, performance, resiliency, and security for web and application services.
- Configure L4/L7 policies: content switching, persistence, health checks, SSL/TLS offload, certificate lifecycle, ciphers, and security hardening.
- Implement and tune advanced features such as GSLB, HA, responder/rewrite policies, caching, compression, and rate limiting; integrate with authentication and SSO (LDAP/AD, SAML, OAuth).
- Monitor and troubleshoot performance using platform analytics (e.g., AppFlow/HDX Insight), logs, and external APM/NPM tools; drive root cause analysis for incidents.
- Develop and maintain network and application delivery automation using Python and Ansible; leverage REST APIs/CLI, version-controlled templates, and CI/CD pipelines for repeatable deployments.
- Ensure engineering patterns meet SLA/availability, performance, and resiliency requirements; contribute to capacity planning and lifecycle refresh.
- Write and review change requests and methods of procedure (MoPs); conduct impact analysis, staged testing, and post-implementation verification.
- Produce and maintain documentation (network and ADC diagrams, standards, inventories, runbooks) and leverage monitoring/resource management tools.
- Collaborate with application, security, and cross-functional teams to plan changes, enforce standards, and execute releases with low risk.
- Participate in an on-call rotation to ensure 24x7x365 coverage for critical infrastructure; overtime may be required during emergencies.
Requirements
- Degree or Diploma in Networking or Technology
- 10+ year experience in IP-based environments; exposure to mission-critical enterprise networks.
- Hands-on experience with Cisco routing and switching (BGP, EIGRP), Cisco Catalyst and 9k series switches.
- Experience with Cisco ACI (single site and/or multisite), Nexus Dashboard, and Nexus Dashboard Orchestrator.
- Experience with enterprise wireless (Cisco APs, 9300 series controllers), RF design principles, and performance optimization.
- Familiarity with Cisco Catalyst Center for assurance, automation, and configuration management.
- Practical experience with Cisco ISE (TACACS+, RADIUS, 802.1X) and NAC policy deployment.
- Experience with Infoblox DDI (DNS, DHCP, IPAM) administration.
- Working knowledge of cloud networking (GCP, AWS, Azure): VPC/VNet design, routing, hybrid connectivity (VPN/Direct Connect/ExpressRoute), and segmentation.
- Strong expertise in L4–L7 load balancing and application delivery with NetScaler ADC (MPX/VPX/CPX) or F5 BIG-IP (LTM/GTM/ASM), including SSL/TLS, WAF features, and traffic steering.
- In-depth understanding of TCP/IP, HTTP/HTTPS, DNS, TLS, and related network services.
- Coding and network automation experience (Python, Ansible) for templating, compliance, orchestration, and configuration deployments.
- Ownership mindset and ability to coordinate resolution of network-related problems; strong analytical and methodical troubleshooting skills.
- Effective oral and written communication skills; strong documentation discipline.
- Customer service focused, professional and welcoming demeanor.
- Ability to meet deadlines and handle sensitive, high-pressure situations.
- Ability to identify issues and contribute to strategy and tactical plans for department initiatives.
- Strong prioritization, organization, conceptual, and problem-solving abilities.
- Knowledge of network administration, architecture, and engineering in mission-critical environments.
- Relevant certifications are an asset (e.g., CCNP, CCIE, Citrix CCE–App Delivery, F5 CA/CTS, ACI/Wireless Specialist).
Benefits
- Flexible work arrangements and a hybrid work model
- Possibility to purchase up to 5 extra days off per year
- Multiple benefits offered to support physical and mental wellbeing, including telemedicine, Wellness account and much more
- Share plan & other savings: up to 12% of salary or even more (ask how you could earn guaranteed income for life)
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