Senior Network Engineer

Position Summary

The Senior Network Engineer is responsible for designing, implementing, monitoring, and supporting the organization’s enterprise network infrastructure — across on-premises environments and Azure cloud connectivity. This includes LAN/WAN architecture, wireless networks, SD-WAN, Azure routing, ATM connectivity, and video surveillance systems. This position ensures consistent network reliability, uptime, and performance while maintaining strong relationships with key vendors.

Key Responsibilities

• Network Infrastructure Management

• Deploy, configure, and maintain Core and Edge networks across corporate and branch environments.
• Manage and optimize Enterprise Wireless infrastructure, including access points, and Radius authentication.
• Configure and maintain core routers and firewalls, including routing, NAT, and access control policies.
• Ensure configuration versioning and regular backups for all routers, switches, and firewalls.
• Oversee WAN circuit provisioning, monitoring, and vendor escalation to ensure performance and redundancy.
• Manage Enterprise SD-WAN systems for efficient branch connectivity and traffic optimization.
• Design, implement, and maintain Azure network infrastructure, including VNets, subnets, route tables, and Network Security Groups (NSGs).
• Configure and support ExpressRoute, site-to-site, or private peering connections between on-prem and Azure environments.
• Develop routing strategies and segmentation models for hybrid network topologies.
• Partner with cloud and security teams to optimize Azure Firewall, Load Balancer, and Application Gateway configurations.
• Document and maintain Azure network diagrams, architecture standards, and routing policies.

• ATM Network Management

• Serve as the primary owner for all ATM network connectivity, hardware, and vendor coordination.
• Manage vendor and carrier relationships to ensure ATM network reliability, SLAs, and uptime objectives are met.
• Continuously monitor ATM network performance, latency, and connectivity health.
• Verify that ATM communication modules, network routers, and circuits remain fully operational.
• Coordinate and verify hardware maintenance, firmware upgrades, and configuration changes.

• Video and Surveillance Systems

• Own and manage the CCTV video system, including NVR servers, switches, cameras and connectivity.
• Act as the primary contact for surveillance vendors, overseeing escalations, service calls, and equipment life cycles.
• Perform routine video system health checks, ensuring camera functionality, recording status, video quality and storage integrity.
• Coordinate with physical security teams for deployment planning, upgrades, and maintenance.

• Network Services & Systems

• Administer and troubleshoot DHCP, DNS, and Radius authentication systems.
• Implement and maintain 802.1X network access control (NAC) across wired and wireless environments, ensuring only authorized devices gain network access.
• Support secure onboarding for corporate and IoT devices using Radius policies and certificate-based authentication.
• Manage UPS, PDU, and management systems to ensure power reliability and environmental visibility across network infrastructure.

• Monitoring & Performance

• Utilize PRTG Network Monitor for proactive monitoring, performance analysis, and alert response across all infrastructure and cloud resources.
• Develop and maintain dashboards and alerting systems to identify and resolve issues before they impact operations.
• Conduct capacity planning and trend analysis to ensure optimal network performance.
• Educate and instruct system and security engineers on the capabilities of the monitoring systems.
• Continually evaluate the system and offer suggestions for additional monitoring needs.

• Documentation & Compliance

• Maintain comprehensive network diagrams, inventories, and configuration documentation.
• Champion Change management and ticketing processes for the organization.
• Ensure compliance with internal IT standards, audit requirements, and industry security frameworks.
• Participate in disaster recovery testing, documentation, and network resiliency planning.

Qualifications

• 5+ years of experience in enterprise network engineering or administration.
• Strong hands-on experience with corporate networking technologies (Wireless, switching, SDWAN, routing and firewalls).
• Proven experience managing vendor relationships.
• Proficiency with Azure networking, including VNets, routing, ExpressRoute, NSGs, and hybrid architectures.
• Experience implementing and managing 802.1X authentication and Radius-based access control.
• Experience with Praessler PRTG or similar infrastructure monitoring platforms.
• Excellent troubleshooting, communication, and documentation skills.

Preferred

• Bachelor’s degree in computer science, Information Technology, or related field.
• Certifications such as Extreme Networks Specialist, Aruba ACMP, Silver Peak SD-WAN Professional, or Microsoft Certified: Azure Network Engineer Associate.
• Experience working in financial institutions or other regulated environments supporting ATMs and video systems.

Competencies

• Strong sense of ownership and accountability for network uptime and reliability.
• Deep understanding of hybrid (on-prem + Azure) network architecture.
• Skilled at vendor management and driving issue resolution through to completion.
• Excellent documentation discipline and attention to detail.
• Collaborative mindset with the ability to work across infrastructure, cloud, and security teams.