Senior Network Engineer Security Clearance

Position: Senior Network Engineer with Security Clearance
Job Description Everforth ECS is seeking a Senior Network Engineer to work in our Washington, DC office.

Please Note:

This position is contingent upon contract award. We are seeking cleared Senior Network Engineers to design, operate, secure, maintain, and troubleshoot enterprise network environments supporting classified and sensitive law enforcement, national security, and criminal justice programs within the National Security Business Unit. The Senior Network Engineer will serve as a technical lead for network availability, performance, security, modernization, documentation, incident response, and lifecycle management across mission-critical network infrastructure, including routing, switching, firewalls, encryption devices, secure connectivity, monitoring, and change implementation.

As a Senior Network Engineer you will design, operate, maintain, and troubleshoot secure enterprise network environments supporting law enforcement, national security, and criminal justice programs within the National Security Business Unit. This role supports classified and sensitive network infrastructure, including routing, switching, firewalls, encryption devices, network monitoring, connectivity, address management, traffic routing, lab validation, and operational sustainment. You will also provide technical leadership, mentorship, and account-growth support by identifying network modernization, automation, resiliency, security, and lifecycle improvement opportunities.

Responsibilities
* Design, configure, monitor, troubleshoot, and sustain secure enterprise network infrastructure.
* Support routing, switching, firewall, network segmentation, connectivity, and secure communications requirements.
* Plan and implement network changes following approved change and configuration management processes.
* Maintain network diagrams, configuration documentation, SOPs, troubleshooting guides, and operational playbooks.
* Validate hardware and software changes in lab or controlled environments before production implementation.
* Respond to network incidents, outages, service requests, and escalations.
* Collaborate with systems, cybersecurity, COMSEC, CDS, application, endpoint, and service desk teams.
* Mentor network engineers, administrators, service desk escalation teams, and junior technical staff.
* Identify modernization, automation, resiliency, security enhancement, lifecycle refresh, and expanded service opportunities. Salary Range: $158,000 - $170,000 Required Skills
* Active Top-Secret clearance with SCI eligibility; TS/SCI preferred.
* 6+ years of enterprise network engineering experience.
* Hands-on experience with routing, switching, firewalls, network monitoring, secure communications, and troubleshooting.
* Experience maintaining network diagrams, SOPs, baselines, and change documentation.
* Knowledge of ITSM, incident response, configuration management, and secure network operations.
* Ability to work across integrated technical teams in mission-critical environments. Desired Skills
* CCNA, CCNP, Security+, CISSP, Network+, or related certification.
* Experience with Cisco, Juniper, encryption devices, PKI, SIEM, vulnerability tools, or network monitoring platforms.
* Experience supporting classified, law enforcement, national security, criminal justice, defense, or intelligence environments.
* Experience mentoring junior engineers and contributing to account growth or technical solutioning. 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!