SENIOR CONSULTANT

Job Description – Network Architect (L3/Architect Level)

Job Title

Network Architect – Enterprise Network & Security

Job Summary

We are seeking an experienced Network Architect with strong expertise in enterprise networking, application delivery, and network security technologies. The candidate will be responsible for designing, implementing, and optimizing scalable and secure network infrastructures across data center and campus environments. The role requires deep technical knowledge in Citrix NetScaler, Routing & Switching, Fortinet Firewalls, F5 Load Balancers, Cisco ISE, Cisco DNAC, and Wireless LAN Controllers (WLC).

Key Responsibilities

• Design and architect enterprise network infrastructure including LAN, WAN, Wireless, and Data Center environments.
• Develop high-level and low-level network designs (HLD/LLD) based on business requirements.
• Implement and manage application delivery controllers (ADC) using NetScaler and F5.
• Architect and support network security solutions using Fortinet Firewalls and access control policies.
• Design and implement network segmentation using Cisco ISE for secure identity-based access.
• Deploy and optimize Cisco DNAC for network automation, assurance, and policy-based management.
• Design and manage enterprise wireless networks using Cisco WLC.
• Provide advanced troubleshooting support for complex network incidents and performance issues.
• Collaborate with security, cloud, and infrastructure teams to ensure integrated solutions.
• Ensure network solutions meet availability, scalability, and security requirements.
• Maintain architecture documentation, diagrams, and standards.
• Participate in capacity planning, network upgrades, and technology roadmap planning.
• Lead major network transformation and migration initiatives.

Required Technical Skills

Core Networking

• Strong expertise in Routing & Switching
• BGP
• OSPF
• EIGRP
• VLANs
• STP
• HSRP/VRRP
• MPLS (preferred)

Application Delivery Controllers

• Citrix NetScaler
• Load balancing
• SSL offloading
• GSLB
• Application optimization
• F5 BIG-IP
• LTM
• GTM
• SSL profiles
• iRules (preferred)

Security

• Fortinet Firewall
• Policy configuration
• VPN (IPSec/SSL)
• NAT
• Threat prevention
• High Availability

Network Access Control

• Cisco ISE
• 802.1X authentication
• Network segmentation
• Guest/BYOD access
• Policy enforcement

Automation & Network Management

• Cisco DNAC
• Network automation
• Assurance
• Device onboarding
• Policy-based segmentation

Wireless Networking

• Cisco WLC
• Wireless design
• RF optimization
• SSID configuration
• Troubleshooting wireless connectivity

Preferred Skills

• Network automation using:
• Python
• Ansible
• REST APIs
• Experience with:
• SD-WAN
• Zero Trust Network Architecture
• Cloud networking (Azure/AWS)
• Monitoring tools (SolarWinds, ThousandEyes, etc.)

Experience Required

• 10–15+ years in enterprise networking
• 5+ years in architecture or L3 design role
• Experience handling large-scale enterprise environments
• Proven experience in network design and migration projects