Note: The job is a remote job and is open to candidates in USA. Dunhill Professional Search & Government Solutions is a company that specializes in providing professional search and government solutions. They are seeking a Senior Network Engineer who will design, implement, and optimize complex enterprise network infrastructures for mission-critical systems in highly regulated environments. The role involves troubleshooting connectivity issues, collaborating with various teams, and providing technical leadership on network infrastructure initiatives.

Responsibilities

• Monitor, troubleshoot, and resolve complex network and infrastructure incidents in a 24/7 NOC environment
• Support design initiatives of end-to-end network infrastructure, including routing, switching, wireless, VPN, and inter-site connectivity across campus, data center, and cloud environments
• Configure and maintain enterprise-class routers, switches, firewalls, and load balancers from major vendors, using best practices for segmentation, redundancy, and quality of service
• Collaborate with server, database, and application teams to resolve cross-functional incidents
• Analyze packet captures, flow data, and logs to determine failure points
• Support and troubleshoot Windows and Linux server environments, including system-level connectivity and performance issues
• Monitor network performance and integrity using flow analysis, SNMP, and packet capture tools, tuning capacity and paths to meet stringent availability and latency targets
• Implement and oversee network security controls such as access control lists, network access control, VPNs, and integration with identity and logging platforms within a highly regulated environment
• Lead resolution of complex, escalated incidents by performing deep protocol-level analysis, coordinating cross-team troubleshooting, and documenting permanent corrective actions
• Design and automate network configuration and change workflows using infrastructure-as-code, templates, and scripting to improve consistency and reduce operational risk
• Mentor junior and mid-level network engineers, reviewing designs and changes, and establishing standards for documentation, monitoring, and change control
• Align network architectures with modern patterns such as SD-WAN, network virtualization, and software-defined networking, and plan migrations from legacy designs
• Drive continuous improvement in monitoring, alerting, and operational processes

Skills

• Bachelor's degree in Information Technology, Computer Science, Network Engineering, or a related field, or equivalent relevant experience
• Minimum of 8 years of experience in network engineering or a closely related role supporting enterprise networks
• Strong knowledge of networking principles, including TCP/IP, routing, switching, wireless, network segmentation, and high-availability design
• Hands-on experience configuring and troubleshooting enterprise network platforms from major vendors such as Cisco, Juniper, Palo Alto, Fortinet, or equivalent
• Proficiency with network monitoring, diagnostics, and troubleshooting tools such as packet analyzers, SNMP platforms, flow analysis, and log correlation tools
• Experience supporting secure network operations in government, defense, or other highly regulated environments
• Proven ability to troubleshoot end-to-end connectivity issues across multiple layers (network, OS, application)
• Solid understanding of Linux and Windows server administration
• Experience diagnosing DNS, DHCP, and authentication-related issues
• Familiarity with virtualization platforms (VMware, Hyper-V) and cloud networking (AWS, Azure, GCP)
• Strong critical thinking and rapid problem isolation skills under pressure
• Professional network certifications such as CompTIA Sec+ and CCNA, CCNP or equivalent advanced vendor credentials
• Candidates must have a current secret security clearance U.S. citizenship required
• Strong analytical, communication, and problem-solving skills, with the ability to manage multiple complex priorities effectively
• Professional network certifications such as Microsoft, ITIL, JNCIS, JNCIP, RHCE or equivalent advanced vendor credentials
• Experience designing and supporting large multi-site networks across telework, campus, data center, and cloud-connected environments
• Familiarity with zero-trust architecture, software-defined networking, SD-WAN, DMVPN, and network automation frameworks
• Background supporting voice, video, and high-throughput mission systems with strict uptime and latency requirements
• Experience creating technical standards, network documentation, and implementation runbooks for enterprise operations teams

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