Senior Network Engineer

Job description

Duties and Responsibilities · Implement and support enterprise LAN, WAN, WLAN, VPN, firewall, network access control, cloud connectivity, and SD-WAN technologies. · Independently complete network engineering assignments and tactical infrastructure projects with limited supervision. · Configure and maintain routers, switches, firewalls, wireless infrastructure, VPN services, and related network platforms. · Implement production network changes, including: o VLANs, trunks, port channels, and switch-port configurations o Static and dynamic routing changes o Firewall policies, NAT rules, security zones, and DMZ configurations o Site-to-site and remote-access VPN configurations o Wireless SSIDs, authentication policies, and access controls o Network Access Control and AAA integrations o WAN circuit activations, migrations, and failover configurations · Troubleshoot complex Layer 2 and Layer 3 network incidents involving routing, switching, wireless, firewalls, VPNs, DNS, DHCP, internet connectivity, and application traffic flows. · Perform packet-level and protocol-level analysis to identify root causes of performance, availability, and connectivity issues. · Lead or participate in network infrastructure projects such as office openings, site relocations, hardware refreshes, network migrations, circuit upgrades, and technology deployments. · Coordinate circuit installations, upgrades, cross-connects, handoffs, testing, migrations, terminations, and outage remediation with carriers, local exchange carriers, and data-center providers. · Develop implementation plans, test plans, rollback procedures, validation steps, and supporting documentation for network changes. · Maintain accurate logical and physical network diagrams, IP address documentation, circuit inventories, configuration standards, and operational procedures. · Monitor network availability, capacity, performance, and configuration compliance using SolarWinds Orion or similar network-management platforms. · Review monitoring alerts and performance trends to identify recurring issues, capacity constraints, and opportunities for proactive improvement. · Ensure network-device configurations are backed up, standardized, and maintained in accordance with organizational security and operational requirements. · Perform root-cause analysis for significant incidents and recommend corrective and preventative actions. · Provide technical guidance to service desk, infrastructure, security, application, and site-support teams for network-related issues. · Coordinate and validate work performed by telecommunications carriers, managed service providers, cabling vendors, field technicians, and other third parties. · Participate in an on-call rotation and provide escalation support for critical network incidents as required. · Follow established Change Management, Incident Management, Problem Management, and configuration-management processes. · Contribute to network standards, reference architectures, lifecycle planning, resiliency improvements, and technology evaluations. Technical Skills · Strong working knowledge of enterprise TCP/IP networking, including subnetting, routing, switching, DNS, DHCP, NAT, and packet flow. · Hands-on experience configuring and troubleshooting Layer 2 technologies such as: o VLANs o Spanning Tree Protocol o Link aggregation and port channels o MAC address learning o Switching loops and broadcast-domain issues · Hands-on experience configuring and troubleshooting Layer 3 technologies, including static routing and dynamic routing protocols such as OSPF and BGP. · Experience supporting Cisco, Juniper, Meraki, or comparable enterprise routing and switching platforms. · Experience managing enterprise firewalls, security policies, network address translation, security zones, and site-to-site or remote-access VPNs. · Experience with enterprise wireless networking, including 802.11 standards, SSIDs, authentication, roaming, interference, and wireless troubleshooting. · Working knowledge of Network Access Control and AAA technologies, including 802.1X, RADIUS, and TACACS+. · Experience supporting WAN connectivity such as internet circuits, MPLS, broadband, private connectivity, or SD-WAN. · Ability to use technical troubleshooting tools such as packet captures, ping, traceroute, route analysis, interface statistics, logs, and network-monitoring platforms. · Experience with network monitoring and configuration-management tools such as SolarWinds Orion or comparable products. · Ability to create and maintain network diagrams using Microsoft Visio, Lucidchart, or similar tools. · Strong understanding of network resiliency, redundancy, high availability, and failover concepts. Professional Skills and Traits · Demonstrated ability to independently troubleshoot complex technical problems and drive them through resolution. · Strong analytical skills with the ability to distinguish between network, security, systems, application, carrier, and end-user issues. · Ability to assess risk, prioritize technical work, and implement changes safely in production environments. · Clear written and verbal communication skills, including the ability to explain technical issues to both technical and nontechnical stakeholders. · Strong documentation habits and attention to configuration accuracy. · Ability to manage multiple projects, incidents, and operational priorities without losing ownership or follow-through. · Comfortable working with geographically distributed teams, vendors, carriers, and managed service providers. · Collaborative mindset and willingness to share technical knowledge with other members of the IT organization. Minimum Qualifications · Available to work on Time Zone AMER at 07.00am EST or Time Zone EMEA at 07.00am GTM · Four or more years of hands-on experience in an enterprise Network Engineering, Network Operations, or Infrastructure Engineering role. · Demonstrated experience independently configuring and supporting production routers, switches, firewalls, wireless infrastructure, or SD-WAN platforms. · Experience implementing production network changes using documented implementation, validation, and rollback procedures. · Experience troubleshooting enterprise network incidents beyond basic connectivity and end-user support. · Experience supporting multi-site network environments. · Experience coordinating circuit installations, upgrades, migrations, handoffs, and outage remediation with telecommunications carriers. · Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field, or an equivalent combination of education, technical training, and relevant professional experience. Preferred Qualifications · CCNP Enterprise, JNCIS, PCNSE, Fortinet FCP, Meraki certification, or another comparable professional-level networking certification. · ITIL 4 Foundation certification or practical experience working within formal Change, Incident, and Problem Management processes. · Experience supporting globally distributed network environments. · Experience with public-cloud networking in AWS or Microsoft Azure · Experience with network automation, scripting, APIs, infrastructure as code, or configuration-management tools. · Familiarity with network-security concepts, segmentation, zero-trust architecture, and security-control implementation. · Experience participating in network architecture, capacity planning, hardware lifecycle planning, or technology-selection initiatives. Indicators of Success Within this role, a successful candidate will be able to: • Independently implement standard network changes and infrastructure deployments. • Resolve complex network incidents using structured troubleshooting and evidence-based analysis. • Take technical ownership of assigned projects from planning through implementation and documentation. • Improve network reliability by identifying recurring problems and implementing permanent corrective actions. • Maintain accurate documentation and follow disciplined production-change practices. • Effectively coordinate technical activities across internal teams, vendors, carriers, and service providers Additional notes Hands-on firewall configuration and management experience Strong understanding of Layer 2 and Layer 3 network protocols Ability to confidently answer technical questions related to firewalls Prior experience working as a Network Engineer Broader network engineering expertise beyond support-level responsibilities