Senior Network Administrator-III

Description

• Expertise in designing and maintaining hybrid network architectures that securely and efficiently connect on-prem data centers with public cloud providers (e.g., Azure) and services. • Good understanding of Azure networking components including VNets, Azure FW, NSGs, VPN Gateways, ExpressRoute, Application Gateways, and hub-and-spoke architecture. • Strong knowledge of SD-WAN technologies and hands-on experience implementing and configuring Fortinet SD-WAN solutions to optimize connectivity across distributed environments. • Proven experience leading migration efforts from legacy platforms such as Palo Alto and Cisco to Fortinet (FortiGate) and Aruba, including planning, deployment, and post-migration support. • Expert-level configuration, deployment, and troubleshooting of firewalls across on-prem and cloud platforms, with emphasis on Fortinet FortiGate, Palo Alto, and Cisco. • Advanced knowledge of routing protocols (BGP, OSPF, EIGRP), L2/L3 architecture, policy-based routing, and Quality of Service (QoS) in complex, multi-site environments. • Strong scripting and automation skills using Python, PowerShell, Bash, and Ansible to automate network tasks and deployments. • Skilled in WAN/LAN/MAN connectivity technologies including MPLS, ELAN, DIA, and LTE for site connectivity and failover. • Experienced with network segmentation, Zero Trust Network Architecture, VPN/IPSec, NAT, 802.1X, and secure remote access solutions. • Proven knowledge of wireless design, configuration, and troubleshooting for large enterprises and campus environments using Aruba solutions. • Skilled in managing and implementing monitoring and alerting to proactively identify and address performance degradation, including tools like SolarWinds. • Ability to diagnose and determine corrective actions to be taken on complex technical issues. • Experience architecting and testing hybrid disaster recovery (DR) and business continuity (BCP) strategies, including cross-platform failover between on-prem and cloud networks. • Proficient in planning redundancy for both physical and virtual network layers to ensure high availability and business resilience. • Demonstrated expertise in leading and mentoring junior staff, providing hands-on technical guidance to resolve complex infrastructure issues efficiently and effectively. • Ability to express complex technical concepts effectively, both written and verbally. • Ability to manage support cases with external technology vendors. Preferred Certifications (one or more of the following): • CCNP • CCNA • Fortinet NSE4+ • Azure Networking Engineer Associate or Azure Solutions Architect Expert certification • CCIE • CompTIA Network + Facilitates the planning, forecasting, implementation and identification of resource requirements for network systems. Performs network planning, network architecture design and engineering activities. Supervises the administration and maintenance of global network infrastructure, providing technical guidance and mentorship to peers. Manages network problem resolution and serves as the highest point of escalation for private and public network issues. Continuously evaluates new products and emerging technologies, providing strategic recommendations that drive proactive improvements and innovation while overseeing the development and implementation of best practices.

Skills

Network engineering, Router, CCNP, Paloalto, Cisco routers, Cisco switches, fortinet, fortigate, aruba, SDWAN, SD-WAN, Bgp, MPLS, Ccna, Lan, Wan, Routing, Switches, Network architecture, Troubleshooting, Routers and switches

Top Skills Details

Network engineering,Router,CCNP,Paloalto,Cisco routers,Cisco switches,fortinet,fortigate,aruba,SDWAN,SD-WAN,Bgp,MPLS

Additional Skills & Qualifications

Qualifications and Requirements: • High school diploma or equivalent required; bachelor’s degree in computer science, IT, Engineering, or equivalent experience preferred. • Minimum of 8 years of experience required; over 10 years preferred. • 3+ years of experience in designing, implementing and managing Azure network services or equivalent public cloud experience. • 1-2 years of experience working with suppliers conducting vendor evaluations, product proofs of concepts, pilots, and enterprise implementations preferred. Essential Functions: • Models, promotes, reinforces, and rewards the consistent use of HOLT’s Values Based Leadership (VBL) tools, models, and processes to ensure alignment with our Vision, Values, and Mission. • Leads the evaluation and adoption of emerging technologies and contributes to the development of long-term strategic roadmaps aligned with business goals. • Leads the development and execution of project plans, including risk assessments, mitigation strategies, and contingency planning to ensure successful delivery and operational resilience. • Designs and implements monitoring, configuration management and reporting functions to support proactive, hands-off network operations. • Performs advanced network and system performance tuning and leads capacity planning to ensure optimal performance and scalability. • Architects and maintains complex hybrid network solutions connecting on-premises data centers with Azure and other services, ensuring high availability and security. • Demonstrates advanced proficiency with static/dynamic routing protocols (BGP, OSPF, EIGRP) and policy-based routing in complex, multi-site network environments; skilled in VLAN design, spanning-tree protocol optimization, and multicast routing configuration. • Applies expert understanding of core networking protocols including TCP/IP, MPLS, DNS, DHCP, SNMP, and various VPN technologies in enterprise contexts. • Expertly configures, maintains, and optimizes enterprise-g

Experience Level

Expert Level