Network Engineer

Robert Half

New York, NY, United States

1 day ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

8 years minimum

Working hours

Regular working hours

Job source

www.juju.com

Tech stack

Microsoft Access Wireless LAN Amazon Web Services Border Gateway Protocol Spanning Tree Protocols VoIP Cisco IOS Command-Line Interface Computer Networks System Configuration Dynamic Host Configuration Protocol Network Address Translation

+42 more

Domain Name System (DNS) Ethernet Failover Firmware IT Management IP Addressing Internet Services Subnetting Virtual Private Networks (VPN) Multi-protocol Systems Internet Service Provider Network Troubleshooting Network Layer Local Security Policy Network Architecture Network Diagrams Network Connections Network Planning and Design Network Monitoring Routing Network Segmentation Packet Analyzer Cisco Nexus Switches Remote Access Technology Cloud Services TCP/IP Virtual Local Area Networks Wide Area Networks Wireless Access Point Wireless Networks Dynamic Routing Cloud Platform System Computer Network Technologies Nx-os System Availability Firewalls (Computer Science) Information Technology Palo Alto Networks Wireless Technologies Cisco Switches Network Server Cisco

Job description

Designing, configuring, maintaining, and troubleshooting Cisco network infrastructure across all Firm offices and supporting environments
Serving as a senior technical escalation point for Cisco switching, firewalls, routing, and connectivity issues
Performing advanced Cisco IOS and NX-OS command-line configuration and troubleshooting
Configuring and managing Cisco switches, including VLANs, trunks, port channels, spanning tree, routing, access ports, uplinks, and high-availability configurations
Configuring and managing Palo Alto Networks firewall technologies, including access rules, NAT, VPN, routing, segmentation, and failover
Supporting network segmentation and securing connectivity requirements in coordination with the Firm’s Security team
Designing, deploying, troubleshooting and supporting LAN and WAN connectivity across all Firm offices
Developing network designs, port maps, rack layouts, IP addressing plans, VLAN structures, and connectivity diagrams for new and existing offices
Coordinating with cabling vendors, telecom providers, carriers, building management, and technology partners during office construction and buildout projects
Provisioning, configuring, testing, and supporting internet, MPLS, SD-WAN, Ethernet, Direct Internet Access, and other carrier circuits
Working directly with internet service providers and telecom carriers on new circuit installations, upgrades, troubleshooting, outages, and service escalations
Configuring routing, failover, redundancy, and monitoring for primary and secondary internet circuits
Supporting hybrid connectivity between Firm offices, cloud environments, and hosted systems
Configuring and troubleshooting TCP/IP, routing, switching, DNS, DHCP, VLANs, subnetting, NAT, ACLs, VPNs, and related network technologies
Using packet captures, interface statistics, logs, command-line diagnostics, and network monitoring tools to isolate and resolve connectivity issues
Managing and supporting Meraki wireless infrastructure across Firm offices; configuring wireless access points, SSIDs, VLAN assignments, authentication, security settings, RF settings, and site-specific policies
Performing wireless troubleshooting, coverage analysis, interference troubleshooting, and access point optimization
Supporting network connectivity for conference rooms, phones, printers, security devices, building systems, and other office technology
Implementing and maintaining network monitoring, alerting, configuration backups, and documentation
Maintaining accurate network diagrams, IP address documentation, circuit inventories, configuration records, and operational procedures
Developing and maintaining standardized network configurations and deployment templates.
Reviewing existing network designs and recommend improvements to reliability, redundancy, security, performance, and supportability
Participating in network architecture reviews for new systems, applications, cloud services, and technology initiatives
Supporting network connectivity to AWS and other cloud environments as required
Assisting with firewall, VPN, remote access, and secure connectivity projects in coordination with Security and Engineering teams
Performing firmware and software upgrades for network infrastructure while minimizing operational disruption
Leading troubleshooting during network outages and critical infrastructure incidents.
Participating in root-cause analysis and developing corrective actions following major incidents
Coordinating maintenance windows, implementation plans, testing, rollback procedures, and change-control documentation for network changes
Collaborating with service desk and desktop teams to resolve user-facing connectivity issues that require advanced network troubleshooting
Participating in after-hours maintenance, project work, and critical incident response when required

Requirements

Bachelor’s degree in Information Technology, Computer Science, Engineering, or related discipline, or equivalent professional experience
8+ years of progressive experience in network engineering, infrastructure engineering, enterprise networking, or related disciplines supporting complex, multi-office enterprise network environments
Cisco certifications such as CCNP Enterprise, CCNP Security, or equivalent advanced Cisco experience strongly preferred
Experience supporting legal, financial-services, or similarly regulated enterprise environments preferred
Expert-level Cisco command-line configuration and troubleshooting experience is required
Deep experience with Cisco IOS and NX-OS is required
Strong experience configuring and troubleshooting Cisco switches and Palo Alto Networks firewalls
Strong understanding of Layer 2 and Layer 3 networking, including VLANs, trunks, spanning tree, port channels, static routing, dynamic routing, subnetting, and network segmentation
Strong understanding of TCP/IP, DNS, DHCP, NAT, ACLs, VPNs, and enterprise routing concepts
Advanced troubleshooting ability using Cisco CLI commands, xrbllit logs, packet captures, interface statistics, and network monitoring tools
Experience designing and supporting redundant and highly available network architectures
Experience working with ISPs and telecom carriers to provision and troubleshoot internet and WAN circuits
Strong knowledge of carrier circuits, handoffs, demarcation points, public IP addressing, BGP/static routing concepts, and redundant circuit design
Strong troubleshooting skills for wired and wireless LAN connectivity
Ability to diagnose issues spanning user devices, switching, routing, firewalls, wireless systems, carrier circuits, servers, and cloud connectivity
Strong understanding of enterprise network security principles and network segmentation
Experience maintaining network diagrams, configuration standards, IP addressing plans, and technical documentation
Strong change-management discipline, including implementation plans, testing procedures, and rollback planning
Ability to work independently during complex troubleshooting and outages while communicating clearly with senior IT leadership and business stakeholders
Strong vendor and carrier-management experience
Excellent analytical, problem-solving, and critical-thinking skills
Ability to remain deeply hands-on while also providing senior technical leadership and mentoring
Experience with Cisco Catalyst and Nexus switching platforms, AWS Direct Connect, and VoIP and unified communications network requirements is preferred
Competency to work in a fact-paced environment requiring high availability and minimal tolerance for network downtime
Flexibility to adjust hours to meet operating and business needs

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