Senior Network Engineer

Job Description
Everforth ECS is looking for a Senior Network Engineer to support work in its Quantico, VA office.

Position Overview

This is a hands-on position responsible for the design, implementation, maintenance, and troubleshooting of network, server, virtualization, storage, and supporting infrastructure.

The role has a strong emphasis on networking, switching, firewalls, DNS, and infrastructure troubleshooting and works closely with the technical team lead, development, database, and cybersecurity personnel.

Primary Responsibilities

• Design, administer, maintain, and troubleshoot enterprise network, server, virtualization, storage, firewall, and supporting infrastructure.
• Manage switching, routing, VLANs, network segmentation, DNS, firewall policies, NAT, VPNs, and related network services.
• Support Windows Server infrastructure and associated enterprise services.
• Diagnose complex infrastructure and connectivity issues across physical, network, virtualization, operating system, and application layers.
• Maintain virtualization, storage, backup/recovery, logging, monitoring, and authentication infrastructure.
• Perform hands-on datacenter work including rack/stack, copper and fiber cabling, optics/transceivers, hardware replacement, firmware upgrades, and physical-layer troubleshooting.
• Support infrastructure upgrades, lifecycle planning, cybersecurity requirements, and vulnerability remediation.
• Maintain and contribute to technical documentation, diagrams, SOPs, and annual system documentation reviews.

Required Skills
Required Qualifications

• 5+ years of relevant experience in network engineering, infrastructure engineering, or a related discipline.
• Bachelor's degree in IT, Computer Science, Engineering, Cybersecurity, or related field, or equivalent education, certifications, and experience.
• Strong enterprise networking knowledge including TCP/IP, subnetting, switching, routing, VLANs, ACLs, NAT, VPNs, DNS, and network segmentation.
• Strong understanding of physical network infrastructure including Ethernet, copper/fiber, optics/transceivers, and link troubleshooting.
• Working knowledge of Windows Server, Active Directory, Group Policy, virtualization, enterprise storage, backup/recovery, and infrastructure monitoring.
• Strong cross-platform troubleshooting skills and the ability to independently research, diagnose, and resolve complex technical problems.
• Working knowledge of cybersecurity hardening principles and secure enterprise environments.
• U.S. citizenship and ability to obtain and maintain a Secret security clearance.
• Must possess or obtain an applicable DoD 8140 certification, such as CompTIA Security+ CE, within 90 days of employment.
• Ability to work primarily on-site at MCB Quantico.

Desired Skills
Recommended / Preferred Qualifications

Experience with one or more of the following:

• VMware vSphere, ESXi, and vCenter
• Cisco enterprise or Nexus switching
• Juniper SRX/vSRX firewalls and Junos
• Enterprise SAN/iSCSI storage and Veeam
• Splunk or comparable centralized logging platforms
• RADIUS/MFA and PKI/certificate-based authentication
• DISA STIGs, RMF/ATO, and ACAS/Nessus
• Cloud infrastructure architecture, design, implementation, or migration
• PowerShell, scripting, or infrastructure automation

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law.

is the federal segment of , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies.

Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We value:

• Attracting and developing top talent and high-performing teams

• Fostering a culture that is engaging, accountable, and mission-driven

Meet the challenge. Make a difference with Everforth ECS!

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