Network Engineer

The Senior Infrastructure & Network EngineerDesigning, configuring, maintaining, and troubleshooting Cisco network infrastructure across all Firm offices and supporting environmentsServing as a senior technical escalation point for Cisco switching, firewalls, routing, and connectivity issuesPerforming advanced Cisco IOS and NX-OS command-line configuration and troubleshootingConfiguring and managing Cisco switches, including VLANs, trunks, port channels, spanning tree, routing, access ports, uplinks, and high-availability configurationsConfiguring and managing Palo Alto Networks firewall technologies, including access rules, NAT, VPN, routing, segmentation, and failoverSupporting network segmentation and securing connectivity requirements in coordination with the Firm’s Security teamDesigning, deploying, troubleshooting and supporting LAN and WAN connectivity across all Firm officesDeveloping network designs, port maps, rack layouts, IP addressing plans, VLAN structures, and connectivity diagrams for new and existing officesCoordinating with cabling vendors, telecom providers, carriers, building management, and technology partners during office construction and buildout projectsProvisioning, configuring, testing, and supporting internet, MPLS, SD-WAN, Ethernet, Direct Internet Access, and other carrier circuitsWorking directly with internet service providers and telecom carriers on new circuit installations, upgrades, troubleshooting, outages, and service escalationsConfiguring routing, failover, redundancy, and monitoring for primary and secondary internet circuitsSupporting hybrid connectivity between Firm offices, cloud environments, and hosted systemsConfiguring and troubleshooting TCP/IP, routing, switching, DNS, DHCP, VLANs, subnetting, NAT, ACLs, VPNs, and related network technologiesUsing packet captures, interface statistics, logs, command-line diagnostics, and network monitoring tools to isolate and resolve connectivity issuesManaging and supporting Meraki wireless infrastructure across Firm offices; configuring wireless access points, SSIDs, VLAN assignments, authentication, security settings, RF settings, and site-specific policiesPerforming wireless troubleshooting, coverage analysis, interference troubleshooting, and access point optimizationSupporting network connectivity for conference rooms, phones, printers, security devices, building systems, and other office technologyImplementing and maintaining network monitoring, alerting, configuration backups, and documentationMaintaining accurate network diagrams, IP address documentation, circuit inventories, configuration records, and operational proceduresDeveloping and maintaining standardized network configurations and deployment templates.Reviewing existing network designs and recommend improvements to reliability, redundancy, security, performance, and supportabilityParticipating in network architecture reviews for new systems, applications, cloud services, and technology initiativesSupporting network connectivity to AWS and other cloud environments as requiredAssisting with firewall, VPN, remote access, and secure connectivity projects in coordination with Security and Engineering teamsPerforming firmware and software upgrades for network infrastructure while minimizing operational disruptionLeading troubleshooting during network outages and critical infrastructure incidents.Participating in root-cause analysis and developing corrective actions following major incidentsCoordinating maintenance windows, implementation plans, testing, rollback procedures, and change-control documentation for network changesCollaborating with service desk and desktop teams to resolve user-facing connectivity issues that require advanced network troubleshootingParticipating in after-hours maintenance, project work, and critical incident response when requiredQualifications Bachelor’s degree in Information Technology, Computer Science, Engineering, or related discipline, or equivalent professional experience8+ years of progressive experience in network engineering, infrastructure engineering, enterprise networking, or related disciplines supporting complex, multi-office enterprise network environmentsCisco certifications such as CCNP Enterprise, CCNP Security, or equivalent advanced Cisco experience strongly preferredExperience supporting legal, financial-services, or similarly regulated enterprise environments preferredExpert-level Cisco command-line configuration and troubleshooting experience is requiredDeep experience with Cisco IOS and NX-OS is requiredStrong experience configuring and troubleshooting Cisco switches and Palo Alto Networks firewallsStrong understanding of Layer 2 and Layer 3 networking, including VLANs, trunks, spanning tree, port channels, static routing, dynamic routing, subnetting, and network segmentationStrong understanding of TCP/IP, DNS, DHCP, NAT, ACLs, VPNs, and enterprise routing conceptsAdvanced troubleshooting ability using Cisco CLI commands, logs, packet captures, interface statistics, and network monitoring toolsExperience designing and supporting redundant and highly available network architecturesExperience working with ISPs and telecom carriers to provision and troubleshoot internet and WAN circuitsStrong knowledge of carrier circuits, handoffs, demarcation points, public IP addressing, BGP/static routing concepts, and redundant circuit designStrong troubleshooting skills for wired and wireless LAN connectivityAbility to diagnose issues spanning user devices, switching, routing, firewalls, wireless systems, carrier circuits, servers, and cloud connectivityStrong understanding of enterprise network security principles and network segmentationExperience maintaining network diagrams, configuration standards, IP addressing plans, and technical documentationStrong change-management discipline, including implementation plans, testing procedures, and rollback planningAbility to work independently during complex troubleshooting and outages while communicating clearly with senior IT leadership and business stakeholdersStrong vendor and carrier-management experienceExcellent analytical, problem-solving, and critical-thinking skillsAbility to remain deeply hands-on while also providing senior technical leadership and mentoringExperience with Cisco Catalyst and Nexus switching platforms, AWS Direct Connect, and VoIP and unified communications network requirements is preferredCompetency to work in a fact-paced environment requiring high availability and minimal tolerance for network downtimeFlexibility to adjust hours to meet operating and business needs