Network Engineer 3 - LAN / WAN

Network Engineer 3 (LAN / WAN / Data Center)The Network Engineer 3 is responsible for the design, implementation, maintenance, optimization, and support of enterprise LAN, WAN, Data Center, backbone, and cloud-connected network infrastructure. This role serves as a key contributor to enterprise networking initiatives, ensuring the stability, security, performance, and availability of critical network services supporting global business operations.The ideal candidate will possess strong experience supporting large-scale enterprise network environments, including routing, switching, network security, cloud connectivity, capacity management, data center networking, and operational excellence. This individual will partner closely with infrastructure, security, architecture, and operations teams to design and implement highly available networking solutions while supporting enterprise modernization and transformation initiatives. Experience supporting highly regulated environments and large-scale infrastructure programs is highly desirable.Key ResponsibilitiesNetwork Engineering & DesignLead or participate in implementing enterprise network infrastructure solutions across LAN, WAN, Internet backbone, Data Center, and cloud-connected environments.Design, review, implement, test, and validate network solutions supporting strategic business initiatives.Participate in enterprise-level projects from a network engineering perspective.Review industry best practices and recommend solutions that enhance network reliability, scalability, automation, and security.Develop and maintain technical specifications, implementation plans, and engineering documentation.Support enterprise data center migration initiatives and network modernization programs.Network Operations & SupportManage production network infrastructure, including: Internet Protocol (IP) backbone networks, Data center networks, Edge Points of Presence (PoPs), Global enterprise connectivity services.Ensure continuous availability and operational stability of network services.Execute network changes utilizing established enterprise change management processes.Monitor network health and proactively identify service-impacting risks and issues.Investigate and resolve network capacity, performance, and connectivity issues.Provide impact analysis and remediation recommendations for network incidents and outages.Support complex multi-domain enterprise environments with mission-critical availability requirements.Routing, Switching & Data Center TechnologiesDesign, configure, and support enterprise routing and switching environments.Implement and maintain: BGP (Border Gateway Protocol), OSPF (Open Shortest Path First), Static Routing.Configure and support modern network platforms, including: Cisco Nexus, Arista Networks.Support Data Center network architectures and high-availability designs.Participate in network testing and validation efforts to ensure operational readiness and service reliability.Support infrastructure modernization and data center transformation programs.Network SecurityImplement network security policies and controls across routers, switches, and firewalls.Support enterprise DDoS mitigation strategies and network protection efforts.Configure and maintain: Access Control Lists (ACLs), Virtual Routing and Forwarding (VRF), DDoS Virtual Connect solutions.Apply security and regulatory requirements when designing and implementing network solutions.Partner with cybersecurity teams to improve enterprise network security posture.Integrate networking infrastructure with enterprise security tools and cloud security platforms.Support security automation and infrastructure security initiatives.Cloud Networking & InfrastructureSupport hybrid networking environments across on-premise and cloud platforms.Assist with design and support of network connectivity within: Microsoft Azure, Google Cloud Platform (GCP).Partner with cloud engineering teams to implement secure, scalable cloud networking architectures.Support cloud infrastructure automation and network security initiatives.Capacity Planning & Reliability EngineeringPerform proactive network testing to validate network performance, capacity, and reliability.Identify gaps, risks, and vulnerabilities that could impact service availability.Assist in forecasting network growth requirements and capacity planning activities.Develop remediation plans to address network bottlenecks and infrastructure constraints.Drive improvements supporting operational excellence and continuous service improvement.Automation & Infrastructure ModernizationUtilize automation and scripting technologies to improve operational efficiency and reduce manual effort.Develop automation solutions using: Python, YAML, Ansible, GitHub.Support network automation initiatives and infrastructure modernization efforts.Maintain automation documentation and standards.Contribute to infrastructure-as-code, automation framework development, and platform automation programs.Support DevOps and DevSecOps-driven infrastructure engineering initiatives.Change Management & DocumentationPrepare comprehensive implementation plans, rollback procedures, and maintenance documentation.Participate in change management reviews and approval processes.Utilize ServiceNow for change control, workflow management, and implementation tracking.Create and maintain detailed network diagrams and technical documentation utilizing: Microsoft Visio, Microsoft Office Suite.Ensure documentation aligns with enterprise engineering standards and operational processes.Collaboration & LeadershipPartner with Product Infrastructure, Security, Architecture, and Operations teams to improve operational standards and practices.Collaborate across multiple technical disciplines to resolve complex issues and implement enterprise solutions.Mentor junior engineers and network operations personnel.Provide training and technical guidance on network installation, configuration, and support.Drive flawless execution of network engineering initiatives from planning through implementation.Support enterprise modernization efforts and cross-functional infrastructure transformation programs.Required Qualifications4+ years of Network Engineering experience or equivalent demonstrated through work experience, training, military experience, or education.3+ years of experience designing and implementing LAN, WAN, and Data Center networking solutions in large enterprise environments.3+ years of experience supporting IP routing technologies, including: BGP, OSPF, Static Routing.3+ years of experience implementing DDoS mitigation strategies and configuring ACLs in enterprise environments.3+ years of experience supporting modern routing and switching platforms, including: Cisco Nexus, Arista Networks.Experience with network security controls, including: ACLs, VRFs, DDoS Virtual Connect, Network Segmentation.Experience utilizing enterprise change management processes.Demonstrated ability to create and maintain technical design documentation.Strong troubleshooting, analytical, and problem-solving skills.Ability to make decisions quickly in high-volume, mission-critical environments.Preferred Qualifications Enterprise Infrastructure, Cloud & Automation ExperienceExperience supporting enterprise data center migrations, network modernization initiatives, and large-scale infrastructure transformation programs.Experience supporting hybrid cloud networking environments including Microsoft Azure and Google Cloud Platform (GCP).Experience implementing network security controls and integrating networking infrastructure with enterprise security tools and cloud security platforms.Experience with network automation, infrastructure-as-code, Python scripting, and platform automation solutions.Experience supporting DevSecOps, infrastructure automation, and operational excellence initiatives.Proven experience supporting highly regulated, large-scale enterprise environments requiring high availability and operational resiliency.Additional Preferred QualificationsCCNA Certification.CCNP Data Center Certification.CCIE Data Center Certification.Experience with data center modernization initiatives.Experience utilizing: Python, YAML, Ansible, GitHub.Experience working in Agile or Product-oriented environments.Experience utilizing Atlassian Jira products.Experience with ServiceNow change management processes.Experience supporting financial services or other highly regulated enterprise environments.Technical Skills Routing & SwitchingBGPOSPFStatic RoutingCisco NexusArista