Network Security Lead

About the Company
: The Level 3 Network and Wireless Engineer is a technical expert responsible for designing, securing, and optimizing the organization's enterprise wireless infrastructure (WLAN, controllers, BYOD). This role ensures high-performance, compliance (SAMA/NCA), and scalable wireless solutions integrated with the broader network architecture. performance, and optimization of the organization's enterprise network infrastructure. The role requires extensive hands-on experience in routing and switching technologies across LAN, SD-WAN, Internet, DMZ, B2B, and ACI Data Center environments. This engineer is expected to handle complex incidents, lead root cause analysis, and guide architectural decisions.

About the Role
: The Level 3 Network and Wireless Engineer is a technical expert responsible for designing, securing, and optimizing the organization's enterprise wireless infrastructure (WLAN, controllers, BYOD).

Responsibilities
:

• Wireless Architecture
  : Lead Wi-Fi 6/6E deployments, site surveys, and capacity planning. Design cloud-managed WLAN (Cisco DNAC, Aruba Central) and hybrid architectures.
• Network Infrastructure Oversight
  : Manage and optimize routing, switching, and interconnectivity across LAN, WAN, DMZ, B2B, and cloud environments. Ensure the availability, performance, and security of network services supporting critical business applications.
• Advanced Troubleshooting
  : Resolve RF interference, roaming issues, CAPWAP failures using Wireshark/Ekahau. Resolve complex technical issues spanning Layer 1-4. Lead root cause analysis and long-term corrective action planning.
• Design & Implementation
  : Participate in network design reviews and implement enterprise-grade network infrastructure (ACI, SD-WAN, etc.). Evaluate and integrate new networking technologies to improve resilience and performance.
• Network Change Management
  : Execute and oversee network configuration changes, migrations, and upgrades in compliance with change control policies. Ensure minimal downtime and risk to production systems.
• Monitoring & Optimization
  : Proactively monitor network performance using tools like SNMP, NetFlow, and telemetry. Analyze trends and implement tuning strategies to enhance throughput and reduce latency.
• Documentation & Standards
  : Maintain up-to-date documentation of network diagrams, configurations, and operational procedures. Ensure network practices align with internal standards and regulatory requirements.
• Collaboration & Mentorship
  : Collaborate with security, infrastructure, and application teams on end-to-end service delivery. Provide guidance and knowledge transfer to Level 2 engineers and junior staff.

Qualifications
:

• Typically, 3+ years of relevant work experience in industry, with a minimum of 1 year in a similar role.
• Expert-level knowledge in routing protocols (OSPF, BGP, EIGRP), switching (VLANs, STP, VTP), and IP addressing.
• Expert-level in Cisco WLC/Aruba/Meraki, RF tools, WIPS.
• Strong hands-on experience with Cisco technologies, including ACI Data Center and SD-WAN platforms.
• Proficient in DMZ, B2B, and internet gateway configuration and operations.
• Solid understanding of network segmentation, redundancy, and HA principles.
• Strong diagnostic and analytical skills, especially under high-pressure situations.
• Excellent documentation and communication skills.

Required Skills
:

• Typically, 3+ years of relevant work experience in industry, with a minimum of 1 year in a similar role.
• Expert-level knowledge in routing protocols (OSPF, BGP, EIGRP), switching (VLANs, STP, VTP), and IP addressing.
• Expert-level in Cisco WLC/Aruba/Meraki, RF tools, WIPS.
• Strong hands-on experience with Cisco technologies, including ACI Data Center and SD-WAN platforms.
• Proficient in DMZ, B2B, and internet gateway configuration and operations.
• Solid understanding of network segmentation, redundancy, and HA principles.
• Strong diagnostic and analytical skills, especially under high-pressure situations.
• Excellent documentation and communication skills.

Preferred Skills
:

• Bachelor's Degree in Network Engineering, Computer Science, or related field.
• Preferred certifications:
• Cisco CCNP or CCIE (Enterprise or Data Center track)
• SD-WAN certifications (Cisco, Viptela)
• ACI or Nexus-related training